./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 687269bb6882b72a3d48999f1e5c55a1d5283a94 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:14:32,690 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:14:32,692 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:14:32,706 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:14:32,706 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:14:32,707 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:14:32,709 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:14:32,711 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:14:32,713 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:14:32,714 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:14:32,715 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:14:32,716 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:14:32,717 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:14:32,718 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:14:32,719 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:14:32,720 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:14:32,721 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:14:32,724 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:14:32,726 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:14:32,728 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:14:32,729 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:14:32,731 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:14:32,734 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:14:32,734 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:14:32,734 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:14:32,735 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:14:32,737 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:14:32,738 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:14:32,739 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:14:32,740 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:14:32,741 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:14:32,741 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:14:32,742 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:14:32,742 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:14:32,744 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:14:32,745 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:14:32,745 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:14:32,771 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:14:32,772 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:14:32,773 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:14:32,773 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:14:32,773 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:14:32,774 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:14:32,774 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:14:32,774 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:14:32,775 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:14:32,775 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:14:32,775 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:14:32,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:14:32,775 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:14:32,776 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:14:32,776 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:14:32,776 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:14:32,776 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:14:32,776 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:14:32,777 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:14:32,778 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:14:32,778 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:14:32,778 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:14:32,779 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:14:32,779 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:14:32,779 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:14:32,780 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:14:32,780 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:14:32,780 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:14:32,781 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:14:32,781 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 -> 687269bb6882b72a3d48999f1e5c55a1d5283a94 [2018-11-28 23:14:32,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:14:32,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:14:32,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:14:32,853 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:14:32,855 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:14:32,856 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:14:32,929 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e2ed809/e5658cd874eb4fc5ac1748aaffcc4550/FLAG5fdb9f6c8 [2018-11-28 23:14:33,345 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:14:33,345 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:14:33,354 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e2ed809/e5658cd874eb4fc5ac1748aaffcc4550/FLAG5fdb9f6c8 [2018-11-28 23:14:33,726 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e2ed809/e5658cd874eb4fc5ac1748aaffcc4550 [2018-11-28 23:14:33,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:14:33,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:14:33,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:14:33,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:14:33,737 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:14:33,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:14:33" (1/1) ... [2018-11-28 23:14:33,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca93be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:33, skipping insertion in model container [2018-11-28 23:14:33,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:14:33" (1/1) ... [2018-11-28 23:14:33,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:14:33,776 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:14:34,017 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:14:34,025 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:14:34,050 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:14:34,072 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:14:34,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34 WrapperNode [2018-11-28 23:14:34,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:14:34,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:14:34,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:14:34,074 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:14:34,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (1/1) ... [2018-11-28 23:14:34,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (1/1) ... [2018-11-28 23:14:34,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:14:34,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:14:34,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:14:34,123 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:14:34,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (1/1) ... [2018-11-28 23:14:34,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (1/1) ... [2018-11-28 23:14:34,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (1/1) ... [2018-11-28 23:14:34,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (1/1) ... [2018-11-28 23:14:34,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (1/1) ... [2018-11-28 23:14:34,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (1/1) ... [2018-11-28 23:14:34,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (1/1) ... [2018-11-28 23:14:34,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:14:34,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:14:34,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:14:34,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:14:34,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:14:34,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:14:34,739 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:14:34,739 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:14:34,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:14:34 BoogieIcfgContainer [2018-11-28 23:14:34,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:14:34,744 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:14:34,744 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:14:34,748 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:14:34,749 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:14:34,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:14:33" (1/3) ... [2018-11-28 23:14:34,751 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c3d1a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:14:34, skipping insertion in model container [2018-11-28 23:14:34,751 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:14:34,751 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:14:34" (2/3) ... [2018-11-28 23:14:34,752 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c3d1a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:14:34, skipping insertion in model container [2018-11-28 23:14:34,752 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:14:34,752 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:14:34" (3/3) ... [2018-11-28 23:14:34,755 INFO L375 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:14:34,831 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:14:34,839 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:14:34,842 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:14:34,843 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:14:34,845 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:14:34,845 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:14:34,846 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:14:34,846 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:14:34,846 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:14:34,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-28 23:14:34,933 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:14:34,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:34,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:34,944 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:14:34,945 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:14:34,945 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:14:34,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-28 23:14:34,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:14:34,947 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:34,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:34,948 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:14:34,948 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:14:34,962 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L25-2true [2018-11-28 23:14:34,963 INFO L796 eck$LassoCheckResult]: Loop: 8#L25-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 12#L25true assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4#L26true assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 10#L26-2true main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 8#L25-2true [2018-11-28 23:14:34,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:34,982 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:14:34,987 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:34,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:35,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:35,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:35,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:35,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:35,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1234440, now seen corresponding path program 1 times [2018-11-28 23:14:35,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:35,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:35,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:35,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:35,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:35,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:35,178 INFO L82 PathProgramCache]: Analyzing trace with hash 29863591, now seen corresponding path program 1 times [2018-11-28 23:14:35,179 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:35,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:35,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:35,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:35,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:35,382 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-11-28 23:14:35,432 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:35,433 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:35,434 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:35,434 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:35,434 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:35,434 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:35,434 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:35,435 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:35,435 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-28 23:14:35,435 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:35,435 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:35,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:35,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:35,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:35,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:35,910 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-28 23:14:35,924 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:35,926 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) [2018-11-28 23:14:35,937 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:35,938 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 [2018-11-28 23:14:35,971 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:35,971 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 [2018-11-28 23:14:35,979 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:35,980 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:36,002 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:36,002 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 [2018-11-28 23:14:36,007 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:36,008 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:36,020 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:36,020 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:36,041 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:36,041 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:36,089 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:36,090 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:36,134 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:36,136 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:36,136 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:36,137 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:36,137 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:36,137 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:36,137 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:36,137 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:36,137 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:36,138 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-28 23:14:36,138 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:36,138 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:36,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:36,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:36,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:36,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:36,462 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:36,468 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:36,470 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:36,472 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:36,472 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:36,472 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:36,473 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:36,477 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:36,477 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:36,487 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:36,488 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:36,489 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:36,489 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:36,489 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:36,489 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:36,492 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:36,492 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:36,502 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:36,503 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:36,503 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:36,504 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:36,504 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:36,505 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:14:36,505 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:36,506 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:14:36,506 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:36,514 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:36,515 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:36,515 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:36,515 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:36,516 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:36,516 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:36,516 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:36,517 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:36,518 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:36,531 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:36,542 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:36,543 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:36,546 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:36,546 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:36,547 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:36,547 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:14:36,549 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:36,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:36,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:36,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:37,137 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:14:37,139 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2018-11-28 23:14:37,264 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 40 states and 55 transitions. Complement of second has 8 states. [2018-11-28 23:14:37,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-28 23:14:37,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-28 23:14:37,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:37,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-28 23:14:37,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:37,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 8 letters. [2018-11-28 23:14:37,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:37,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 55 transitions. [2018-11-28 23:14:37,278 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-28 23:14:37,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 21 states and 30 transitions. [2018-11-28 23:14:37,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-28 23:14:37,285 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-28 23:14:37,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2018-11-28 23:14:37,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:37,286 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2018-11-28 23:14:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2018-11-28 23:14:37,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2018-11-28 23:14:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 23:14:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2018-11-28 23:14:37,317 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2018-11-28 23:14:37,317 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2018-11-28 23:14:37,317 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:14:37,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2018-11-28 23:14:37,318 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-28 23:14:37,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:37,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:37,319 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:14:37,319 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:14:37,320 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 103#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2018-11-28 23:14:37,320 INFO L796 eck$LassoCheckResult]: Loop: 106#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 97#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 98#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 105#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2018-11-28 23:14:37,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:37,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:14:37,321 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:37,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:37,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:37,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:37,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:37,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:37,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1328732, now seen corresponding path program 1 times [2018-11-28 23:14:37,332 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:37,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:37,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:37,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:37,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:37,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:37,347 INFO L82 PathProgramCache]: Analyzing trace with hash 925773253, now seen corresponding path program 1 times [2018-11-28 23:14:37,347 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:37,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:37,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:37,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:37,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:37,426 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:37,427 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:37,427 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:37,427 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:37,427 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:37,427 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:37,427 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:37,428 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:37,428 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-28 23:14:37,428 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:37,428 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:37,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:37,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:37,618 WARN L180 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 23:14:37,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:37,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:37,962 WARN L180 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-28 23:14:38,076 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:38,076 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 [2018-11-28 23:14:38,080 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:38,080 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:38,108 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:38,108 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 [2018-11-28 23:14:38,118 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:38,118 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 [2018-11-28 23:14:38,151 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:38,151 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:38,269 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:38,272 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:38,272 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:38,272 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:38,272 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:38,272 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:38,273 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:38,273 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:38,273 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:38,273 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-28 23:14:38,273 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:38,275 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:38,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:38,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:38,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:38,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:38,450 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:38,450 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:38,451 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:38,453 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:38,453 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:38,454 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:38,454 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:38,455 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:38,456 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:38,462 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:38,463 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:38,464 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:38,464 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:38,464 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:38,464 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:38,464 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:38,465 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:38,465 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:38,473 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:38,480 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:38,480 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:38,481 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:38,481 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:38,481 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:38,481 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:14:38,482 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:38,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:38,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:38,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:38,550 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:14:38,550 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 4 states. [2018-11-28 23:14:38,604 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 30 states and 44 transitions. Complement of second has 7 states. [2018-11-28 23:14:38,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:38,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-28 23:14:38,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 23:14:38,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:38,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-28 23:14:38,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:38,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-28 23:14:38,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:38,609 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2018-11-28 23:14:38,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:14:38,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 21 states and 30 transitions. [2018-11-28 23:14:38,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-28 23:14:38,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-28 23:14:38,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2018-11-28 23:14:38,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:38,613 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2018-11-28 23:14:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2018-11-28 23:14:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-11-28 23:14:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 23:14:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-11-28 23:14:38,616 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-28 23:14:38,616 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-28 23:14:38,616 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:14:38,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2018-11-28 23:14:38,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:14:38,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:38,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:38,618 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:14:38,618 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:14:38,619 INFO L794 eck$LassoCheckResult]: Stem: 190#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 191#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 198#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2018-11-28 23:14:38,619 INFO L796 eck$LassoCheckResult]: Loop: 192#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 184#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 185#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 199#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2018-11-28 23:14:38,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:38,619 INFO L82 PathProgramCache]: Analyzing trace with hash 31084, now seen corresponding path program 1 times [2018-11-28 23:14:38,619 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:38,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:38,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:38,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:38,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:38,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:38,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 1 times [2018-11-28 23:14:38,629 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:38,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:38,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:38,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:38,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:38,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:38,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1357271332, now seen corresponding path program 1 times [2018-11-28 23:14:38,639 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:38,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:38,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:38,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:38,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:38,709 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:38,709 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:38,709 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:38,710 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:38,710 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:38,710 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:38,710 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:38,711 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:38,711 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-28 23:14:38,711 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:38,711 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:38,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:38,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:38,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:38,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:38,914 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:38,914 INFO L412 LassoAnalysis]: Checking for nontermination... 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 [2018-11-28 23:14:38,919 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:38,919 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:38,923 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:38,923 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2018-11-28 23:14:38,945 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:38,945 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:38,965 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:38,966 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 [2018-11-28 23:14:38,971 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:38,971 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 [2018-11-28 23:14:38,997 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:38,997 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:39,084 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:39,089 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:39,090 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:39,090 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:39,090 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:39,090 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:39,090 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:39,090 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:39,090 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:39,091 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-28 23:14:39,091 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:39,091 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:39,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:39,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:39,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:39,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:39,303 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-28 23:14:39,344 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:39,344 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:39,344 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:39,345 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:39,345 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:39,348 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:39,348 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:39,348 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:39,348 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:39,349 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:39,350 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:39,351 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:39,352 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:39,352 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:39,352 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:39,352 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:39,354 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:39,354 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:39,359 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:39,360 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:39,360 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:39,360 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:39,361 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:39,361 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:39,361 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:39,362 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:39,362 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:39,370 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:39,376 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:39,377 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:39,377 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:39,377 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:39,377 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:39,378 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:14:39,378 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:39,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:39,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:39,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:39,483 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:14:39,484 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-28 23:14:39,539 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 32 states and 48 transitions. Complement of second has 7 states. [2018-11-28 23:14:39,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-28 23:14:39,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-28 23:14:39,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:39,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-28 23:14:39,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:39,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2018-11-28 23:14:39,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:39,545 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2018-11-28 23:14:39,548 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:14:39,550 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 38 transitions. [2018-11-28 23:14:39,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-28 23:14:39,551 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-28 23:14:39,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 38 transitions. [2018-11-28 23:14:39,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:39,551 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 38 transitions. [2018-11-28 23:14:39,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 38 transitions. [2018-11-28 23:14:39,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-11-28 23:14:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 23:14:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2018-11-28 23:14:39,558 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2018-11-28 23:14:39,558 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2018-11-28 23:14:39,558 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:14:39,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2018-11-28 23:14:39,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:14:39,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:39,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:39,561 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-28 23:14:39,561 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:14:39,563 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 291#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 298#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 292#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 283#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 284#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 302#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2018-11-28 23:14:39,563 INFO L796 eck$LassoCheckResult]: Loop: 285#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 282#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 301#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2018-11-28 23:14:39,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:39,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1357211759, now seen corresponding path program 1 times [2018-11-28 23:14:39,563 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:39,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:39,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:39,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:39,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:39,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:39,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1419720, now seen corresponding path program 2 times [2018-11-28 23:14:39,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:39,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:39,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:39,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:39,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:39,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:39,592 INFO L82 PathProgramCache]: Analyzing trace with hash -369493672, now seen corresponding path program 1 times [2018-11-28 23:14:39,592 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:39,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:39,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:39,595 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:14:39,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:39,664 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:39,664 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:39,664 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:39,664 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:39,665 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:39,665 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:39,665 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:39,665 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:39,665 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-28 23:14:39,666 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:39,666 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:39,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:39,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:39,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:39,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:39,787 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:39,788 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 [2018-11-28 23:14:39,796 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:39,797 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:39,801 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:39,801 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} 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 [2018-11-28 23:14:39,823 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:39,823 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 [2018-11-28 23:14:39,851 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:39,851 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:40,018 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:40,020 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:40,020 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:40,020 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:40,020 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:40,020 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:40,021 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:40,021 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:40,021 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:40,021 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-28 23:14:40,021 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:40,021 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:40,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,125 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:40,126 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:40,127 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:40,127 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:40,128 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:40,128 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:40,128 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:14:40,128 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:40,129 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:14:40,129 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:40,133 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:40,134 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:40,135 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:40,135 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:40,135 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:40,135 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:40,135 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:40,136 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:40,136 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:40,142 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:40,146 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:40,149 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:40,149 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:40,149 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:40,150 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:40,150 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:14:40,150 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:40,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:40,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:40,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:40,259 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:14:40,259 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 23:14:40,308 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 78 states and 116 transitions. Complement of second has 7 states. [2018-11-28 23:14:40,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-28 23:14:40,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-28 23:14:40,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:40,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-28 23:14:40,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:40,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-28 23:14:40,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:40,313 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 116 transitions. [2018-11-28 23:14:40,315 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-28 23:14:40,317 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 55 states and 80 transitions. [2018-11-28 23:14:40,317 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-28 23:14:40,317 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2018-11-28 23:14:40,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 80 transitions. [2018-11-28 23:14:40,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:40,318 INFO L705 BuchiCegarLoop]: Abstraction has 55 states and 80 transitions. [2018-11-28 23:14:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 80 transitions. [2018-11-28 23:14:40,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2018-11-28 23:14:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 23:14:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 63 transitions. [2018-11-28 23:14:40,323 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2018-11-28 23:14:40,323 INFO L608 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2018-11-28 23:14:40,323 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:14:40,323 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 63 transitions. [2018-11-28 23:14:40,324 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-28 23:14:40,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:40,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:40,325 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:14:40,325 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:14:40,326 INFO L794 eck$LassoCheckResult]: Stem: 450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 451#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 459#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 460#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 476#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 475#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 472#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 470#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2018-11-28 23:14:40,326 INFO L796 eck$LassoCheckResult]: Loop: 446#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 482#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 465#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 445#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2018-11-28 23:14:40,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:40,326 INFO L82 PathProgramCache]: Analyzing trace with hash 876108449, now seen corresponding path program 1 times [2018-11-28 23:14:40,326 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:40,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:40,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:40,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:40,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:40,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:40,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1529372, now seen corresponding path program 2 times [2018-11-28 23:14:40,341 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:40,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:40,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:40,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:40,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:40,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:40,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1432445116, now seen corresponding path program 1 times [2018-11-28 23:14:40,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:40,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:40,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:40,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:14:40,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:40,431 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:40,432 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:40,432 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:40,432 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:40,432 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:40,433 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:40,433 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:40,433 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:40,433 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-28 23:14:40,434 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:40,434 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:40,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,541 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:40,542 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:40,551 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:40,552 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:40,629 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:40,629 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:40,676 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:40,678 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:40,679 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:40,679 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:40,679 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:40,679 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:40,679 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:40,679 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:40,679 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:40,679 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-28 23:14:40,679 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:40,680 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:40,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:40,819 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:40,819 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:40,820 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:40,821 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:40,821 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:40,821 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:40,821 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:40,825 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:40,825 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:40,828 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:40,829 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:40,829 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:40,829 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:40,829 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:40,830 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:40,830 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:40,830 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:40,831 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:40,837 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:40,841 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:40,842 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:40,842 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:40,842 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:40,842 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:40,842 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:14:40,843 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:40,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:40,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:40,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:40,922 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:14:40,922 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28 Second operand 4 states. [2018-11-28 23:14:40,952 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28. Second operand 4 states. Result 106 states and 158 transitions. Complement of second has 7 states. [2018-11-28 23:14:40,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-28 23:14:40,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-28 23:14:40,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:40,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-28 23:14:40,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:40,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 8 letters. [2018-11-28 23:14:40,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:40,958 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 158 transitions. [2018-11-28 23:14:40,961 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-28 23:14:40,963 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 90 states and 129 transitions. [2018-11-28 23:14:40,963 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2018-11-28 23:14:40,963 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2018-11-28 23:14:40,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 129 transitions. [2018-11-28 23:14:40,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:40,964 INFO L705 BuchiCegarLoop]: Abstraction has 90 states and 129 transitions. [2018-11-28 23:14:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 129 transitions. [2018-11-28 23:14:40,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2018-11-28 23:14:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-28 23:14:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2018-11-28 23:14:40,975 INFO L728 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2018-11-28 23:14:40,975 INFO L608 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2018-11-28 23:14:40,975 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:14:40,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 111 transitions. [2018-11-28 23:14:40,977 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-28 23:14:40,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:40,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:40,978 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:14:40,978 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:14:40,978 INFO L794 eck$LassoCheckResult]: Stem: 657#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 658#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 666#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 667#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 682#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 681#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 679#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 677#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 675#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 671#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2018-11-28 23:14:40,978 INFO L796 eck$LassoCheckResult]: Loop: 672#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 721#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 719#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 718#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2018-11-28 23:14:40,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:40,978 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 2 times [2018-11-28 23:14:40,978 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:40,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:40,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:40,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:40,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:41,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:41,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 2 times [2018-11-28 23:14:41,001 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:41,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:41,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:41,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:14:41,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:41,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:41,015 INFO L82 PathProgramCache]: Analyzing trace with hash -4707247, now seen corresponding path program 1 times [2018-11-28 23:14:41,015 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:41,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:41,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:41,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:14:41,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:41,072 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:41,073 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:41,073 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:41,073 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:41,073 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:41,073 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:41,073 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:41,073 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:41,073 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-28 23:14:41,073 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:41,074 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:41,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:41,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:41,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:41,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:41,178 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:41,178 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:41,184 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:41,184 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:41,216 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:41,216 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:41,330 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:41,332 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:41,332 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:41,332 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:41,332 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:41,333 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:41,333 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:41,333 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:41,333 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:41,333 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-28 23:14:41,333 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:41,333 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:41,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:41,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:41,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:41,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:41,443 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:41,443 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:41,444 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:41,445 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:41,445 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:41,445 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:41,445 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:41,445 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:41,446 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:41,446 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:41,449 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:41,453 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:41,453 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:41,454 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:41,454 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:41,454 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:41,454 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:14:41,454 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:41,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:41,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:41,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:41,536 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:14:41,536 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-11-28 23:14:41,572 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 112 states and 173 transitions. Complement of second has 7 states. [2018-11-28 23:14:41,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-28 23:14:41,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-28 23:14:41,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:41,578 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:14:41,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:41,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:41,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:41,676 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:14:41,677 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-11-28 23:14:41,708 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 107 states and 160 transitions. Complement of second has 7 states. [2018-11-28 23:14:41,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:41,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 23:14:41,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-28 23:14:41,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:41,713 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:14:41,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:41,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:41,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:41,785 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 3 loop predicates [2018-11-28 23:14:41,785 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-11-28 23:14:41,836 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 128 states and 203 transitions. Complement of second has 8 states. [2018-11-28 23:14:41,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-28 23:14:41,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-28 23:14:41,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:41,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-28 23:14:41,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:41,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-28 23:14:41,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:41,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 203 transitions. [2018-11-28 23:14:41,848 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2018-11-28 23:14:41,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 97 states and 147 transitions. [2018-11-28 23:14:41,850 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-11-28 23:14:41,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 23:14:41,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 147 transitions. [2018-11-28 23:14:41,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:41,851 INFO L705 BuchiCegarLoop]: Abstraction has 97 states and 147 transitions. [2018-11-28 23:14:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 147 transitions. [2018-11-28 23:14:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2018-11-28 23:14:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-28 23:14:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 100 transitions. [2018-11-28 23:14:41,859 INFO L728 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2018-11-28 23:14:41,859 INFO L608 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2018-11-28 23:14:41,859 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 23:14:41,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 100 transitions. [2018-11-28 23:14:41,861 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2018-11-28 23:14:41,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:41,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:41,862 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-28 23:14:41,862 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:14:41,862 INFO L794 eck$LassoCheckResult]: Stem: 1259#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1260#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1282#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1283#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 1286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1285#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1268#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2018-11-28 23:14:41,862 INFO L796 eck$LassoCheckResult]: Loop: 1261#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1252#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1253#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1265#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1254#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1255#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1266#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1316#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2018-11-28 23:14:41,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:41,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 1 times [2018-11-28 23:14:41,862 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:41,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:41,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:41,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:41,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:41,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:41,871 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 1 times [2018-11-28 23:14:41,871 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:41,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:41,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:41,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:41,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:41,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:41,881 INFO L82 PathProgramCache]: Analyzing trace with hash -725918680, now seen corresponding path program 1 times [2018-11-28 23:14:41,882 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:41,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:41,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:41,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:41,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:42,085 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-11-28 23:14:42,105 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:42,105 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:42,106 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:42,106 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:42,106 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:42,106 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:42,106 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:42,107 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:42,107 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-28 23:14:42,107 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:42,107 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:42,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:42,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:42,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:42,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:42,216 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:42,217 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:42,225 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:42,225 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:42,229 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:42,229 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:42,254 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:42,254 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:42,275 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:42,275 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:42,285 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:42,285 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:42,305 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:42,305 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:42,312 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:42,313 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:42,344 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:42,344 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:42,514 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:42,516 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:42,516 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:42,516 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:42,516 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:42,517 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:42,517 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:42,517 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:42,517 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:42,517 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-28 23:14:42,517 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:42,517 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:42,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:42,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:42,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:42,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:42,608 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:42,609 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:42,609 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:42,610 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:42,610 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:42,610 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:42,610 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:14:42,611 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:42,611 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:14:42,611 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:42,618 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:42,618 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:42,619 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:42,619 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:42,619 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:42,619 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:42,620 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:42,620 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:42,623 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:42,623 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:42,624 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:42,624 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:42,624 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:42,624 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:42,625 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:42,625 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:42,627 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:42,628 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:42,628 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:42,628 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:42,628 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:42,628 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:42,628 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:42,629 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:42,629 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:42,633 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:42,636 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:42,636 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:42,636 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:42,636 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:42,637 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:42,637 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:14:42,637 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:42,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:42,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:42,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:42,762 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 23:14:42,762 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43 Second operand 5 states. [2018-11-28 23:14:42,861 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43. Second operand 5 states. Result 246 states and 366 transitions. Complement of second has 13 states. [2018-11-28 23:14:42,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:14:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2018-11-28 23:14:42,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-28 23:14:42,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:42,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-28 23:14:42,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:42,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2018-11-28 23:14:42,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:42,870 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 366 transitions. [2018-11-28 23:14:42,874 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2018-11-28 23:14:42,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 208 states and 314 transitions. [2018-11-28 23:14:42,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2018-11-28 23:14:42,882 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47 [2018-11-28 23:14:42,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 314 transitions. [2018-11-28 23:14:42,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:42,882 INFO L705 BuchiCegarLoop]: Abstraction has 208 states and 314 transitions. [2018-11-28 23:14:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 314 transitions. [2018-11-28 23:14:42,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 188. [2018-11-28 23:14:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-11-28 23:14:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 287 transitions. [2018-11-28 23:14:42,899 INFO L728 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2018-11-28 23:14:42,900 INFO L608 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2018-11-28 23:14:42,900 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 23:14:42,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 287 transitions. [2018-11-28 23:14:42,902 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2018-11-28 23:14:42,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:42,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:42,903 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:14:42,903 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:14:42,903 INFO L794 eck$LassoCheckResult]: Stem: 1652#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1653#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1687#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1685#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 1683#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1682#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1680#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1675#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1782#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1778#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2018-11-28 23:14:42,903 INFO L796 eck$LassoCheckResult]: Loop: 1771#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1761#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1762#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1746#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1672#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1673#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1784#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1781#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2018-11-28 23:14:42,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:42,904 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 3 times [2018-11-28 23:14:42,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:42,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:42,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:42,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:42,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:42,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:42,917 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 2 times [2018-11-28 23:14:42,917 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:42,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:42,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:42,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:14:42,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:42,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:42,947 INFO L82 PathProgramCache]: Analyzing trace with hash -742368616, now seen corresponding path program 2 times [2018-11-28 23:14:42,947 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:42,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:42,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:42,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:14:42,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:43,127 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-11-28 23:14:43,142 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:43,142 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:43,143 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:43,143 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:43,143 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:43,143 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:43,143 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:43,143 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:43,144 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration8_Loop [2018-11-28 23:14:43,144 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:43,144 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:43,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:43,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:43,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:43,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:43,271 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:43,271 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:43,275 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:43,275 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:43,295 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:43,295 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:43,300 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:43,300 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:43,328 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:43,328 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:43,514 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:43,516 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:43,517 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:43,517 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:43,517 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:43,517 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:43,517 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:43,517 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:43,517 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:43,517 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration8_Loop [2018-11-28 23:14:43,517 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:43,518 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:43,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:43,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:43,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:43,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:43,680 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:43,680 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:43,680 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:43,682 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:43,683 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:43,683 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:43,683 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:43,684 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:43,684 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:43,687 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:43,687 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:43,688 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:43,688 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:43,688 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:43,688 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:43,689 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:43,689 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:43,689 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:43,693 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:43,696 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:43,696 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:43,697 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:43,697 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:43,697 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:43,697 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:14:43,697 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:43,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:43,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:43,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:43,943 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 23:14:43,943 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2018-11-28 23:14:44,158 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 330 states and 503 transitions. Complement of second has 13 states. [2018-11-28 23:14:44,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:14:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2018-11-28 23:14:44,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-28 23:14:44,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:44,160 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:14:44,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:44,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:44,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:44,232 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 23:14:44,232 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2018-11-28 23:14:44,348 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 326 states and 483 transitions. Complement of second has 15 states. [2018-11-28 23:14:44,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:44,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:14:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2018-11-28 23:14:44,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-28 23:14:44,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:44,350 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:14:44,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:44,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:44,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:44,442 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 4 loop predicates [2018-11-28 23:14:44,442 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2018-11-28 23:14:44,593 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 525 states and 786 transitions. Complement of second has 23 states. [2018-11-28 23:14:44,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:14:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 34 transitions. [2018-11-28 23:14:44,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-28 23:14:44,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:44,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 19 letters. Loop has 8 letters. [2018-11-28 23:14:44,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:44,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 16 letters. [2018-11-28 23:14:44,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:44,602 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 525 states and 786 transitions. [2018-11-28 23:14:44,611 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2018-11-28 23:14:44,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 525 states to 342 states and 512 transitions. [2018-11-28 23:14:44,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2018-11-28 23:14:44,616 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2018-11-28 23:14:44,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 512 transitions. [2018-11-28 23:14:44,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:44,617 INFO L705 BuchiCegarLoop]: Abstraction has 342 states and 512 transitions. [2018-11-28 23:14:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 512 transitions. [2018-11-28 23:14:44,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 205. [2018-11-28 23:14:44,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-11-28 23:14:44,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2018-11-28 23:14:44,642 INFO L728 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2018-11-28 23:14:44,642 INFO L608 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2018-11-28 23:14:44,642 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-28 23:14:44,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 205 states and 317 transitions. [2018-11-28 23:14:44,646 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2018-11-28 23:14:44,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:44,647 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:44,647 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-28 23:14:44,648 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:14:44,648 INFO L794 eck$LassoCheckResult]: Stem: 3285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3286#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3327#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3328#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 3362#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3335#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3299#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2018-11-28 23:14:44,648 INFO L796 eck$LassoCheckResult]: Loop: 3300#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 3421#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 3422#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3412#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3414#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 3470#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3469#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3415#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2018-11-28 23:14:44,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:44,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 2 times [2018-11-28 23:14:44,648 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:44,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:44,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:44,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:14:44,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:44,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:44,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1729619210, now seen corresponding path program 1 times [2018-11-28 23:14:44,665 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:44,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:44,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:44,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:14:44,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:44,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:44,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1535265306, now seen corresponding path program 1 times [2018-11-28 23:14:44,681 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:44,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:44,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:44,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:44,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:44,784 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:44,784 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:44,784 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:44,784 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:44,785 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:44,785 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:44,785 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:44,785 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:44,786 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration9_Loop [2018-11-28 23:14:44,786 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:44,786 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:44,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:44,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:44,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:44,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:44,921 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:44,921 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:44,926 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:44,927 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:44,950 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:44,950 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:44,958 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:44,959 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:44,963 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:44,963 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:44,984 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:44,985 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:45,010 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:45,011 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:45,103 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:45,106 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:45,106 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:45,106 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:45,106 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:45,106 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:45,106 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:45,106 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:45,107 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:45,107 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration9_Loop [2018-11-28 23:14:45,107 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:45,107 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:45,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:45,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:45,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:45,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:45,206 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:45,206 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:45,208 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:45,209 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:45,209 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:45,209 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:45,209 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:45,211 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:45,212 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:45,218 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:45,218 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:45,219 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:45,219 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:45,219 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:45,220 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:14:45,220 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:45,221 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:14:45,221 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:45,225 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:45,226 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:45,227 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:45,227 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:45,227 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:45,227 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:45,227 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:45,229 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:45,229 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:45,235 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:45,238 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:45,238 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:45,240 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:45,240 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:45,241 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:45,241 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:14:45,241 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:45,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:45,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:45,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:45,568 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 23:14:45,568 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133 Second operand 5 states. [2018-11-28 23:14:45,670 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133. Second operand 5 states. Result 490 states and 759 transitions. Complement of second has 12 states. [2018-11-28 23:14:45,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:14:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2018-11-28 23:14:45,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-28 23:14:45,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:45,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-28 23:14:45,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:45,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2018-11-28 23:14:45,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:45,676 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 490 states and 759 transitions. [2018-11-28 23:14:45,687 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-28 23:14:45,690 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 490 states to 285 states and 426 transitions. [2018-11-28 23:14:45,690 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2018-11-28 23:14:45,690 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-28 23:14:45,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 426 transitions. [2018-11-28 23:14:45,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:14:45,693 INFO L705 BuchiCegarLoop]: Abstraction has 285 states and 426 transitions. [2018-11-28 23:14:45,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 426 transitions. [2018-11-28 23:14:45,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 193. [2018-11-28 23:14:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-11-28 23:14:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2018-11-28 23:14:45,703 INFO L728 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2018-11-28 23:14:45,704 INFO L608 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2018-11-28 23:14:45,704 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-28 23:14:45,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 295 transitions. [2018-11-28 23:14:45,708 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:14:45,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:14:45,708 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:14:45,711 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1] [2018-11-28 23:14:45,711 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:14:45,711 INFO L794 eck$LassoCheckResult]: Stem: 4063#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4064#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4084#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4088#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4085#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4087#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4081#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 4082#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 4134#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 4131#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4128#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4130#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4141#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4140#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4137#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2018-11-28 23:14:45,711 INFO L796 eck$LassoCheckResult]: Loop: 4079#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4074#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4075#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4078#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2018-11-28 23:14:45,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:45,712 INFO L82 PathProgramCache]: Analyzing trace with hash -725859107, now seen corresponding path program 1 times [2018-11-28 23:14:45,715 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:45,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:45,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:45,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:45,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:45,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:45,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1479302, now seen corresponding path program 3 times [2018-11-28 23:14:45,734 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:45,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:45,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:45,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:14:45,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:45,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:45,747 INFO L82 PathProgramCache]: Analyzing trace with hash -517142174, now seen corresponding path program 2 times [2018-11-28 23:14:45,748 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:14:45,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:14:45,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:45,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:14:45,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:14:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:14:45,888 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:14:45,903 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:45,904 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:45,904 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:45,904 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:45,904 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:14:45,904 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:45,904 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:45,904 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:45,904 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration10_Loop [2018-11-28 23:14:45,904 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:45,904 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:45,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:45,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:45,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:45,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:46,074 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:46,074 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:14:46,083 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:46,083 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:46,105 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:46,105 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_19=0} Honda state: {v_rep~unnamed0~0~false_19=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:46,111 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:46,111 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:46,133 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:14:46,134 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_19=1} Honda state: {v_rep~unnamed0~0~true_19=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:46,138 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:14:46,139 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:46,163 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:14:46,163 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:14:46,258 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:14:46,260 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:14:46,260 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:14:46,260 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:14:46,260 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:14:46,260 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:14:46,260 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:14:46,261 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:14:46,261 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:14:46,261 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration10_Loop [2018-11-28 23:14:46,261 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:14:46,261 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:14:46,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:46,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:46,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:46,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:14:46,351 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:14:46,352 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:14:46,352 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:46,353 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:46,353 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:46,353 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:46,353 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:46,354 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:46,354 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:46,356 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:46,356 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:46,357 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:46,357 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:46,357 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:46,357 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:46,358 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:14:46,358 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:14:46,360 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:14:46,361 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:14:46,361 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:14:46,361 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:14:46,361 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:14:46,362 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:14:46,362 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:14:46,362 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:14:46,362 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:14:46,364 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:14:46,367 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:14:46,367 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:14:46,367 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:14:46,367 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:14:46,368 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:14:46,368 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:14:46,368 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:14:46,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:46,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:46,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:46,470 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:14:46,471 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2018-11-28 23:14:46,514 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 302 states and 452 transitions. Complement of second has 7 states. [2018-11-28 23:14:46,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-28 23:14:46,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-28 23:14:46,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:46,517 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:14:46,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:46,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:46,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:46,652 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:14:46,652 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2018-11-28 23:14:46,693 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 313 states and 443 transitions. Complement of second has 7 states. [2018-11-28 23:14:46,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 23:14:46,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-28 23:14:46,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:46,695 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:14:46,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:14:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:46,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:14:46,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:14:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:14:46,754 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 3 loop predicates [2018-11-28 23:14:46,755 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2018-11-28 23:14:46,785 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 423 states and 703 transitions. Complement of second has 8 states. [2018-11-28 23:14:46,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:14:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:14:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-28 23:14:46,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-28 23:14:46,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:46,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2018-11-28 23:14:46,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:46,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-28 23:14:46,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:14:46,801 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 423 states and 703 transitions. [2018-11-28 23:14:46,811 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:14:46,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 423 states to 0 states and 0 transitions. [2018-11-28 23:14:46,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:14:46,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:14:46,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:14:46,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:14:46,815 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:14:46,815 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:14:46,816 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:14:46,816 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-11-28 23:14:46,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:14:46,816 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:14:46,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:14:46,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:14:46 BoogieIcfgContainer [2018-11-28 23:14:46,839 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:14:46,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:14:46,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:14:46,840 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:14:46,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:14:34" (3/4) ... [2018-11-28 23:14:46,852 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:14:46,853 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:14:46,854 INFO L168 Benchmark]: Toolchain (without parser) took 13123.55 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 298.8 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -225.7 MB). Peak memory consumption was 73.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:14:46,858 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:14:46,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.98 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:14:46,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.83 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:14:46,860 INFO L168 Benchmark]: Boogie Preprocessor took 30.88 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:14:46,860 INFO L168 Benchmark]: RCFGBuilder took 586.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -163.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:14:46,861 INFO L168 Benchmark]: BuchiAutomizer took 12095.68 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 181.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -79.9 MB). Peak memory consumption was 101.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:14:46,867 INFO L168 Benchmark]: Witness Printer took 13.48 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:14:46,880 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 340.98 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 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 47.83 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.88 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 586.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -163.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 12095.68 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 181.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -79.9 MB). Peak memory consumption was 101.5 MB. Max. memory is 11.5 GB. * Witness Printer took 13.48 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (0 trivial, 7 deterministic, 3 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 7 locations. One deterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.0s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 8.0s. Construction of modules took 0.5s. Büchi inclusion checks took 3.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 316 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 205 states and ocurred in iteration 8. Nontrivial modules had stage [7, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 191 SDtfs, 249 SDslu, 111 SDs, 0 SdLazy, 311 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT10 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax150 hnf98 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp100 dnf100 smp100 tf107 neg100 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...