./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-lit/cggmp2005b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/loop-lit/cggmp2005b.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7408fe5ba42f5c474832c90e26f3e7ef2342554c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:50:32,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:50:32,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:50:32,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:50:32,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:50:32,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:50:32,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:50:32,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:50:32,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:50:32,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:50:32,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:50:32,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:50:32,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:50:32,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:50:32,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:50:32,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:50:32,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:50:32,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:50:32,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:50:32,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:50:32,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:50:32,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:50:32,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:50:32,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:50:32,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:50:32,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:50:32,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:50:32,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:50:32,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:50:32,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:50:32,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:50:32,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:50:32,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:50:32,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:50:32,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:50:32,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:50:32,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:50:32,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:50:32,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:50:32,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:50:32,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:50:32,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 20:50:32,184 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:50:32,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:50:32,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:50:32,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:50:32,186 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:50:32,188 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:50:32,188 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:50:32,188 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:50:32,189 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:50:32,189 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:50:32,189 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:50:32,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:50:32,189 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:50:32,190 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:50:32,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:50:32,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:50:32,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:50:32,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:50:32,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:50:32,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:50:32,192 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:50:32,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:50:32,193 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:50:32,193 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:50:32,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:50:32,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:50:32,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:50:32,194 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:50:32,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:50:32,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:50:32,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:50:32,195 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:50:32,196 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:50:32,197 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7408fe5ba42f5c474832c90e26f3e7ef2342554c [2019-11-28 20:50:32,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:50:32,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:50:32,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:50:32,532 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:50:32,533 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:50:32,534 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/cggmp2005b.i [2019-11-28 20:50:32,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac98c224d/e6fb49112dfa432e91e98a536933328a/FLAG6c5446d90 [2019-11-28 20:50:33,097 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:50:33,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/cggmp2005b.i [2019-11-28 20:50:33,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac98c224d/e6fb49112dfa432e91e98a536933328a/FLAG6c5446d90 [2019-11-28 20:50:33,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac98c224d/e6fb49112dfa432e91e98a536933328a [2019-11-28 20:50:33,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:50:33,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:50:33,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:50:33,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:50:33,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:50:33,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb63f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33, skipping insertion in model container [2019-11-28 20:50:33,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:50:33,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:50:33,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:50:33,716 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:50:33,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:50:33,753 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:50:33,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33 WrapperNode [2019-11-28 20:50:33,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:50:33,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:50:33,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:50:33,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:50:33,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:50:33,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:50:33,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:50:33,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:50:33,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (1/1) ... [2019-11-28 20:50:33,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:50:33,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:50:33,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:50:33,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:50:33,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:33,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:50:33,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:50:34,141 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:50:34,141 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 20:50:34,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:34 BoogieIcfgContainer [2019-11-28 20:50:34,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:50:34,144 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:50:34,144 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:50:34,147 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:50:34,148 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:34,148 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:50:33" (1/3) ... [2019-11-28 20:50:34,149 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@145afc51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:50:34, skipping insertion in model container [2019-11-28 20:50:34,150 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:34,150 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:50:33" (2/3) ... [2019-11-28 20:50:34,150 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@145afc51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:50:34, skipping insertion in model container [2019-11-28 20:50:34,150 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:50:34,151 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:34" (3/3) ... [2019-11-28 20:50:34,152 INFO L371 chiAutomizerObserver]: Analyzing ICFG cggmp2005b.i [2019-11-28 20:50:34,232 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:50:34,232 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:50:34,232 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:50:34,232 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:50:34,233 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:50:34,233 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:50:34,233 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:50:34,233 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:50:34,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-11-28 20:50:34,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:50:34,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:34,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:34,282 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:50:34,282 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 20:50:34,282 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:50:34,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-11-28 20:50:34,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:50:34,284 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:34,285 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:34,285 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:50:34,285 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 20:50:34,294 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 8#L21-3true [2019-11-28 20:50:34,294 INFO L796 eck$LassoCheckResult]: Loop: 8#L21-3true assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 3#L17-2true assume !(main_~j~0 < 20); 13#L17-3true main_~k~0 := 4; 11#L21-2true assume !true; 8#L21-3true [2019-11-28 20:50:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:34,301 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 20:50:34,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:34,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2537226] [2019-11-28 20:50:34,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:34,423 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:34,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1238515, now seen corresponding path program 1 times [2019-11-28 20:50:34,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:34,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298010516] [2019-11-28 20:50:34,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:34,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298010516] [2019-11-28 20:50:34,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:50:34,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:50:34,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850149780] [2019-11-28 20:50:34,470 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 20:50:34,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:50:34,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 20:50:34,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 20:50:34,490 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-28 20:50:34,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:50:34,498 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-11-28 20:50:34,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 20:50:34,500 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-11-28 20:50:34,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:50:34,506 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 5 states and 7 transitions. [2019-11-28 20:50:34,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 20:50:34,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-28 20:50:34,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 7 transitions. [2019-11-28 20:50:34,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:50:34,518 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-28 20:50:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 7 transitions. [2019-11-28 20:50:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-11-28 20:50:34,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 20:50:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-11-28 20:50:34,547 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-28 20:50:34,547 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-28 20:50:34,547 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:50:34,547 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-11-28 20:50:34,548 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:50:34,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:34,548 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:34,548 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:50:34,548 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 20:50:34,549 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 35#L21-3 [2019-11-28 20:50:34,549 INFO L796 eck$LassoCheckResult]: Loop: 35#L21-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 32#L17-2 assume !(main_~j~0 < 20); 33#L17-3 main_~k~0 := 4; 36#L21-2 assume !(main_~k~0 <= 3); 35#L21-3 [2019-11-28 20:50:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:34,549 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-28 20:50:34,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:34,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19983936] [2019-11-28 20:50:34,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:34,564 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:34,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:34,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1238511, now seen corresponding path program 1 times [2019-11-28 20:50:34,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:34,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357584370] [2019-11-28 20:50:34,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:34,589 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:34,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:34,589 INFO L82 PathProgramCache]: Analyzing trace with hash 29867662, now seen corresponding path program 1 times [2019-11-28 20:50:34,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:34,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884503319] [2019-11-28 20:50:34,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:34,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884503319] [2019-11-28 20:50:34,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:50:34,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 20:50:34,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447478176] [2019-11-28 20:50:34,705 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:34,706 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:34,706 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:34,706 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:34,706 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:50:34,706 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:34,706 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:34,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:34,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration2_Loop [2019-11-28 20:50:34,707 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:34,707 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:34,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:34,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:34,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:34,811 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:34,812 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:34,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:50:34,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:50:34,829 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:50:34,829 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=20} Honda state: {ULTIMATE.start_main_~j~0=20} Generalized eigenvectors: [] Lambdas: [] Nus: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:34,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:50:34,842 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:34,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:50:34,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:50:34,862 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:50:34,864 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:34,864 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:34,864 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:34,864 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:34,864 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:50:34,864 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:34,864 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:34,864 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:34,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration2_Loop [2019-11-28 20:50:34,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:34,865 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:34,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:34,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:34,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:35,075 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:35,080 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:35,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:50:35,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:50:35,087 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:50:35,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:50:35,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:50:35,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:50:35,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:50:35,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:50:35,094 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. 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) [2019-11-28 20:50:35,111 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:50:35,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:50:35,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:50:35,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:50:35,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:50:35,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:50:35,116 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:50:35,116 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:35,125 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:50:35,147 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:50:35,147 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:35,161 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:50:35,162 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:50:35,162 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:50:35,163 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 201 Supporting invariants [] [2019-11-28 20:50:35,168 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:50:35,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:35,212 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:50:35,213 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:35,224 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:50:35,225 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:35,273 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:50:35,274 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-28 20:50:35,319 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 4 states. [2019-11-28 20:50:35,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:50:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:50:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-28 20:50:35,325 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-28 20:50:35,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:35,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-28 20:50:35,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:35,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 1 letters. Loop has 8 letters. [2019-11-28 20:50:35,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:35,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 20 transitions. [2019-11-28 20:50:35,336 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-28 20:50:35,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 19 transitions. [2019-11-28 20:50:35,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 20:50:35,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-28 20:50:35,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 19 transitions. [2019-11-28 20:50:35,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:50:35,339 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 19 transitions. [2019-11-28 20:50:35,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 19 transitions. [2019-11-28 20:50:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-11-28 20:50:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 20:50:35,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2019-11-28 20:50:35,344 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 16 transitions. [2019-11-28 20:50:35,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:50:35,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:50:35,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:50:35,346 INFO L87 Difference]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2019-11-28 20:50:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:50:35,354 INFO L93 Difference]: Finished difference Result 11 states and 18 transitions. [2019-11-28 20:50:35,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:50:35,356 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 18 transitions. [2019-11-28 20:50:35,358 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-28 20:50:35,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 18 transitions. [2019-11-28 20:50:35,359 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 20:50:35,359 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-28 20:50:35,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 18 transitions. [2019-11-28 20:50:35,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:50:35,359 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 18 transitions. [2019-11-28 20:50:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 18 transitions. [2019-11-28 20:50:35,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 20:50:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 20:50:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 18 transitions. [2019-11-28 20:50:35,361 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 18 transitions. [2019-11-28 20:50:35,362 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 18 transitions. [2019-11-28 20:50:35,362 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:50:35,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 18 transitions. [2019-11-28 20:50:35,363 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-28 20:50:35,363 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:35,363 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:35,363 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:50:35,363 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:50:35,364 INFO L794 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 112#L21-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 113#L17-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 107#L17-2 [2019-11-28 20:50:35,364 INFO L796 eck$LassoCheckResult]: Loop: 107#L17-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 107#L17-2 [2019-11-28 20:50:35,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:35,364 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-28 20:50:35,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:35,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56917459] [2019-11-28 20:50:35,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:35,377 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:35,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:35,377 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-28 20:50:35,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:35,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109002158] [2019-11-28 20:50:35,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:35,387 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:35,388 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2019-11-28 20:50:35,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:35,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609326718] [2019-11-28 20:50:35,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:35,402 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:35,468 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:35,469 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:35,469 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:35,469 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:35,469 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:50:35,469 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:35,469 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:35,469 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:35,470 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration3_Lasso [2019-11-28 20:50:35,470 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:35,470 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:35,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:35,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:35,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:35,554 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:35,554 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:35,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:50:35,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:50:35,567 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:50:35,567 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=0} Honda state: {ULTIMATE.start_main_~k~0=9} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:35,577 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:50:35,577 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:35,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:50:35,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:50:37,592 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:50:37,596 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:37,596 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:37,596 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:37,596 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:37,597 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:50:37,597 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:37,597 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:37,597 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:37,597 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration3_Lasso [2019-11-28 20:50:37,597 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:37,597 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:37,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:37,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:37,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:37,677 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:37,678 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 20:50:37,701 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:50:37,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:50:37,703 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:50:37,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:50:37,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:50:37,715 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:50:37,715 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:37,723 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:37,736 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:50:37,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:50:37,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:50:37,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:50:37,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:50:37,745 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:50:37,745 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:50:37,754 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:50:37,765 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2019-11-28 20:50:37,765 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. 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) [2019-11-28 20:50:37,771 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:37,775 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-28 20:50:37,775 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:50:37,776 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 39 Supporting invariants [1*ULTIMATE.start_main_~i~0 - 1 >= 0] [2019-11-28 20:50:37,781 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-28 20:50:37,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:37,820 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:50:37,820 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:37,852 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:50:37,853 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:37,853 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2019-11-28 20:50:37,853 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 18 transitions. cyclomatic complexity: 10 Second operand 4 states. [2019-11-28 20:50:37,915 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 18 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 20 states and 33 transitions. Complement of second has 6 states. [2019-11-28 20:50:37,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:50:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 20:50:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-11-28 20:50:37,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-28 20:50:37,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:37,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-28 20:50:37,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:37,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 20:50:37,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:37,918 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 33 transitions. [2019-11-28 20:50:37,921 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:50:37,922 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 17 states and 27 transitions. [2019-11-28 20:50:37,922 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 20:50:37,922 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 20:50:37,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 27 transitions. [2019-11-28 20:50:37,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:50:37,923 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 27 transitions. [2019-11-28 20:50:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 27 transitions. [2019-11-28 20:50:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-28 20:50:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 20:50:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 26 transitions. [2019-11-28 20:50:37,929 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 26 transitions. [2019-11-28 20:50:37,929 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 26 transitions. [2019-11-28 20:50:37,930 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:50:37,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 26 transitions. [2019-11-28 20:50:37,932 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:50:37,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:37,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:37,934 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-28 20:50:37,934 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:50:37,934 INFO L794 eck$LassoCheckResult]: Stem: 186#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 187#L21-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 188#L17-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 183#L17-2 assume !(main_~j~0 < 20); 184#L17-3 main_~k~0 := 4; 191#L21-2 [2019-11-28 20:50:37,935 INFO L796 eck$LassoCheckResult]: Loop: 191#L21-2 assume !!(main_~k~0 <= 3);main_~k~0 := 1 + main_~k~0; 191#L21-2 [2019-11-28 20:50:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:37,935 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2019-11-28 20:50:37,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:37,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216357495] [2019-11-28 20:50:37,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:37,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216357495] [2019-11-28 20:50:37,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941522382] [2019-11-28 20:50:37,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:50:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,004 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:50:38,004 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:38,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:50:38,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-11-28 20:50:38,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339230903] [2019-11-28 20:50:38,049 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:50:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:38,050 INFO L82 PathProgramCache]: Analyzing trace with hash 63, now seen corresponding path program 1 times [2019-11-28 20:50:38,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:38,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53211682] [2019-11-28 20:50:38,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:38,057 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:38,067 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:38,067 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:38,067 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:38,067 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:38,068 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:50:38,068 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:38,068 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:38,068 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:38,068 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration4_Loop [2019-11-28 20:50:38,068 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:38,068 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:38,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:38,102 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:38,102 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2019-11-28 20:50:38,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:50:38,117 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:38,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:50:38,138 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:50:38,147 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:50:38,150 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:38,150 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:38,150 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:38,150 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:38,151 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:50:38,151 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:38,151 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:38,151 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:38,151 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration4_Loop [2019-11-28 20:50:38,151 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:38,152 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:38,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:38,184 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:38,184 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 20:50:38,193 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:50:38,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:50:38,195 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:50:38,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:50:38,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:50:38,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:50:38,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:50:38,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:38,201 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:50:38,206 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:50:38,207 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. 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 [2019-11-28 20:50:38,214 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:50:38,214 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:50:38,214 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:50:38,214 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = -2*ULTIMATE.start_main_~k~0 + 7 Supporting invariants [] [2019-11-28 20:50:38,217 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:50:38,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,266 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:50:38,266 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,272 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:50:38,273 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:38,273 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 20:50:38,274 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 26 transitions. cyclomatic complexity: 14 Second operand 2 states. [2019-11-28 20:50:38,302 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 26 transitions. cyclomatic complexity: 14. Second operand 2 states. Result 47 states and 75 transitions. Complement of second has 5 states. [2019-11-28 20:50:38,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:50:38,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 20:50:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-28 20:50:38,303 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-28 20:50:38,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:38,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-28 20:50:38,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:38,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:50:38,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:38,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 75 transitions. [2019-11-28 20:50:38,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:50:38,309 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 31 states and 51 transitions. [2019-11-28 20:50:38,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-28 20:50:38,310 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-28 20:50:38,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 51 transitions. [2019-11-28 20:50:38,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:50:38,311 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 51 transitions. [2019-11-28 20:50:38,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 51 transitions. [2019-11-28 20:50:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 16. [2019-11-28 20:50:38,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 20:50:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 25 transitions. [2019-11-28 20:50:38,317 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 25 transitions. [2019-11-28 20:50:38,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:50:38,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:50:38,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:50:38,318 INFO L87 Difference]: Start difference. First operand 16 states and 25 transitions. Second operand 8 states. [2019-11-28 20:50:38,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:50:38,368 INFO L93 Difference]: Finished difference Result 17 states and 26 transitions. [2019-11-28 20:50:38,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:50:38,369 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 26 transitions. [2019-11-28 20:50:38,370 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:50:38,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 26 transitions. [2019-11-28 20:50:38,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 20:50:38,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-28 20:50:38,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 26 transitions. [2019-11-28 20:50:38,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:50:38,372 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2019-11-28 20:50:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 26 transitions. [2019-11-28 20:50:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-28 20:50:38,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 20:50:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2019-11-28 20:50:38,375 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2019-11-28 20:50:38,375 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2019-11-28 20:50:38,376 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 20:50:38,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 26 transitions. [2019-11-28 20:50:38,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:50:38,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:50:38,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:50:38,380 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1] [2019-11-28 20:50:38,380 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:50:38,380 INFO L794 eck$LassoCheckResult]: Stem: 342#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 343#L21-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 340#L17-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 341#L17-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 351#L17-2 assume !(main_~j~0 < 20); 348#L17-3 main_~k~0 := 4; 347#L21-2 assume !(main_~k~0 <= 3); 344#L21-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 345#L17-2 assume !(main_~j~0 < 20); 338#L17-3 main_~k~0 := 4; 346#L21-2 [2019-11-28 20:50:38,380 INFO L796 eck$LassoCheckResult]: Loop: 346#L21-2 assume !!(main_~k~0 <= 3);main_~k~0 := 1 + main_~k~0; 346#L21-2 [2019-11-28 20:50:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:38,381 INFO L82 PathProgramCache]: Analyzing trace with hash 352026178, now seen corresponding path program 1 times [2019-11-28 20:50:38,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:38,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374534307] [2019-11-28 20:50:38,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:50:38,445 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374534307] [2019-11-28 20:50:38,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340481165] [2019-11-28 20:50:38,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:50:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,480 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:50:38,481 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 20:50:38,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:50:38,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-28 20:50:38,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903725989] [2019-11-28 20:50:38,540 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:50:38,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:38,541 INFO L82 PathProgramCache]: Analyzing trace with hash 63, now seen corresponding path program 2 times [2019-11-28 20:50:38,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:50:38,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139886743] [2019-11-28 20:50:38,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:50:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:50:38,547 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:50:38,556 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:38,557 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:38,557 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:38,557 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:38,557 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:50:38,557 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:38,557 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:38,557 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:38,557 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration5_Loop [2019-11-28 20:50:38,558 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:38,558 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:38,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:38,591 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:38,592 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2019-11-28 20:50:38,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:50:38,611 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:50:38,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:50:38,634 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:38,642 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:50:38,644 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:50:38,645 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:50:38,645 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:50:38,645 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:50:38,645 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:50:38,645 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:38,645 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:50:38,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:50:38,646 INFO L133 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration5_Loop [2019-11-28 20:50:38,646 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:50:38,646 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:50:38,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:50:38,669 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:50:38,669 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 20:50:38,677 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:50:38,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:50:38,679 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:50:38,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:50:38,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:50:38,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:50:38,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:50:38,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:38,687 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:50:38,691 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:50:38,691 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. 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) [2019-11-28 20:50:38,697 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:50:38,698 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:50:38,698 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:50:38,698 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = -2*ULTIMATE.start_main_~k~0 + 7 Supporting invariants [] [2019-11-28 20:50:38,710 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:50:38,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,740 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:50:38,741 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,746 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:50:38,746 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:38,747 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 20:50:38,747 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-28 20:50:38,761 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 43 states and 68 transitions. Complement of second has 5 states. [2019-11-28 20:50:38,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:50:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 20:50:38,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-28 20:50:38,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 1 letters. [2019-11-28 20:50:38,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:38,763 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:50:38,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,784 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:50:38,785 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,790 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:50:38,790 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:38,791 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 20:50:38,791 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-28 20:50:38,801 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 43 states and 68 transitions. Complement of second has 5 states. [2019-11-28 20:50:38,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:50:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 20:50:38,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-28 20:50:38,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 1 letters. [2019-11-28 20:50:38,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:38,805 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:50:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:50:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,838 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:50:38,839 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:50:38,844 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:50:38,844 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:50:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:50:38,845 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 1 loop predicates [2019-11-28 20:50:38,845 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-11-28 20:50:38,860 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 32 states and 48 transitions. Complement of second has 4 states. [2019-11-28 20:50:38,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:50:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 20:50:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2019-11-28 20:50:38,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 10 letters. Loop has 1 letters. [2019-11-28 20:50:38,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:38,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 11 letters. Loop has 1 letters. [2019-11-28 20:50:38,862 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:38,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 10 letters. Loop has 2 letters. [2019-11-28 20:50:38,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:50:38,863 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2019-11-28 20:50:38,864 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:50:38,864 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-11-28 20:50:38,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:50:38,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:50:38,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:50:38,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:50:38,865 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:50:38,865 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:50:38,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:50:38,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 20:50:38,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:50:38,866 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2019-11-28 20:50:38,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:50:38,866 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-28 20:50:38,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 20:50:38,867 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-28 20:50:38,867 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:50:38,867 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:50:38,867 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:50:38,867 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:50:38,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:50:38,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:50:38,868 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:50:38,868 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:50:38,868 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:50:38,868 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 20:50:38,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:50:38,868 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:50:38,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:50:38,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:50:38 BoogieIcfgContainer [2019-11-28 20:50:38,876 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:50:38,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:50:38,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:50:38,876 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:50:38,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:50:34" (3/4) ... [2019-11-28 20:50:38,883 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:50:38,883 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:50:38,886 INFO L168 Benchmark]: Toolchain (without parser) took 5409.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 960.4 MB in the beginning and 830.6 MB in the end (delta: 129.8 MB). Peak memory consumption was 279.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:38,887 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:50:38,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.84 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 948.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:38,892 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.49 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:50:38,893 INFO L168 Benchmark]: Boogie Preprocessor took 93.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -198.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:38,894 INFO L168 Benchmark]: RCFGBuilder took 246.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:38,896 INFO L168 Benchmark]: BuchiAutomizer took 4732.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 830.6 MB in the end (delta: 296.9 MB). Peak memory consumption was 296.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:50:38,896 INFO L168 Benchmark]: Witness Printer took 7.27 ms. Allocated memory is still 1.2 GB. Free memory is still 830.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:50:38,900 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.84 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 948.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.49 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 93.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -198.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 246.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4732.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 830.6 MB in the end (delta: 296.9 MB). Peak memory consumption was 296.9 MB. Max. memory is 11.5 GB. * Witness Printer took 7.27 ms. Allocated memory is still 1.2 GB. Free memory is still 830.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * i + 201 and consists of 3 locations. One deterministic module has affine ranking function -2 * j + 39 and consists of 5 locations. One deterministic module has affine ranking function -2 * k + 7 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * k + 7 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 3.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 17 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 45 SDslu, 34 SDs, 0 SdLazy, 44 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso1 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf98 lsp87 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq167 hnf93 smp100 dnf100 smp100 tf109 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...