./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --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/recursive/MultCommutative-2.c -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 a755472942b72da612d26a2f3af20ed4332f07b5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 21:15:53,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 21:15:53,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 21:15:53,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 21:15:53,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 21:15:53,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 21:15:53,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 21:15:53,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 21:15:53,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 21:15:53,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 21:15:53,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 21:15:53,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 21:15:53,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 21:15:53,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 21:15:53,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 21:15:53,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 21:15:53,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 21:15:53,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 21:15:53,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 21:15:53,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 21:15:53,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 21:15:53,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 21:15:53,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 21:15:53,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 21:15:53,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 21:15:53,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 21:15:53,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 21:15:53,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 21:15:53,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 21:15:53,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 21:15:53,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 21:15:53,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 21:15:53,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 21:15:53,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 21:15:53,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 21:15:53,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 21:15:53,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 21:15:53,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 21:15:53,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 21:15:53,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 21:15:53,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 21:15:53,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 21:15:53,309 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 21:15:53,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 21:15:53,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 21:15:53,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 21:15:53,313 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 21:15:53,313 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 21:15:53,314 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 21:15:53,314 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 21:15:53,314 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 21:15:53,314 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 21:15:53,314 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 21:15:53,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 21:15:53,315 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 21:15:53,315 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 21:15:53,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 21:15:53,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 21:15:53,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 21:15:53,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 21:15:53,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 21:15:53,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 21:15:53,318 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 21:15:53,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 21:15:53,318 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 21:15:53,318 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 21:15:53,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 21:15:53,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 21:15:53,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 21:15:53,322 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 21:15:53,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 21:15:53,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 21:15:53,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 21:15:53,323 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 21:15:53,325 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 21:15:53,325 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 -> a755472942b72da612d26a2f3af20ed4332f07b5 [2019-11-28 21:15:53,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 21:15:53,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 21:15:53,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 21:15:53,641 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 21:15:53,641 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 21:15:53,642 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2019-11-28 21:15:53,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c727279d5/fbc6721996e74e46ba5b5ae3c65f44b8/FLAG11fcb04eb [2019-11-28 21:15:54,110 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 21:15:54,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2019-11-28 21:15:54,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c727279d5/fbc6721996e74e46ba5b5ae3c65f44b8/FLAG11fcb04eb [2019-11-28 21:15:54,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c727279d5/fbc6721996e74e46ba5b5ae3c65f44b8 [2019-11-28 21:15:54,499 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 21:15:54,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 21:15:54,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 21:15:54,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 21:15:54,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 21:15:54,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9b4597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54, skipping insertion in model container [2019-11-28 21:15:54,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 21:15:54,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 21:15:54,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:15:54,712 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 21:15:54,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:15:54,745 INFO L208 MainTranslator]: Completed translation [2019-11-28 21:15:54,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54 WrapperNode [2019-11-28 21:15:54,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 21:15:54,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 21:15:54,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 21:15:54,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 21:15:54,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 21:15:54,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 21:15:54,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 21:15:54,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 21:15:54,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (1/1) ... [2019-11-28 21:15:54,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 21:15:54,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 21:15:54,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 21:15:54,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 21:15:54,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (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 21:15:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2019-11-28 21:15:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2019-11-28 21:15:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 21:15:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 21:15:55,105 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 21:15:55,106 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 21:15:55,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:15:55 BoogieIcfgContainer [2019-11-28 21:15:55,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 21:15:55,108 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 21:15:55,109 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 21:15:55,113 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 21:15:55,114 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:15:55,114 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 09:15:54" (1/3) ... [2019-11-28 21:15:55,116 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34ab5423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:15:55, skipping insertion in model container [2019-11-28 21:15:55,116 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:15:55,116 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:15:54" (2/3) ... [2019-11-28 21:15:55,117 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34ab5423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:15:55, skipping insertion in model container [2019-11-28 21:15:55,117 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:15:55,117 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:15:55" (3/3) ... [2019-11-28 21:15:55,119 INFO L371 chiAutomizerObserver]: Analyzing ICFG MultCommutative-2.c [2019-11-28 21:15:55,184 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 21:15:55,184 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 21:15:55,184 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 21:15:55,185 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 21:15:55,185 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 21:15:55,185 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 21:15:55,185 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 21:15:55,185 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 21:15:55,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-11-28 21:15:55,223 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 21:15:55,224 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:15:55,224 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:15:55,232 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 21:15:55,232 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:15:55,232 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 21:15:55,232 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2019-11-28 21:15:55,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 21:15:55,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:15:55,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:15:55,235 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 21:15:55,236 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:15:55,242 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L27true assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L31true assume !(main_~n~0 < 0 || main_~n~0 > 46340); 16#L34true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2019-11-28 21:15:55,242 INFO L796 eck$LassoCheckResult]: Loop: 4#multENTRYtrue ~n := #in~n;~m := #in~m; 6#L16true assume ~m < 0; 3#L17true call #t~ret0 := mult(~n, -~m);< 4#multENTRYtrue [2019-11-28 21:15:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:55,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1390425, now seen corresponding path program 1 times [2019-11-28 21:15:55,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:55,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912176387] [2019-11-28 21:15:55,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:55,354 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:55,356 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 1 times [2019-11-28 21:15:55,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:55,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319728411] [2019-11-28 21:15:55,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:55,370 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:55,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:55,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1527521652, now seen corresponding path program 1 times [2019-11-28 21:15:55,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:55,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833744188] [2019-11-28 21:15:55,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:55,473 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 21:15:55,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833744188] [2019-11-28 21:15:55,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:15:55,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 21:15:55,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138571315] [2019-11-28 21:15:55,570 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:15:55,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:15:55,571 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:15:55,571 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:15:55,571 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 21:15:55,571 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:55,571 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:15:55,571 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:15:55,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2019-11-28 21:15:55,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:15:55,572 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:15:55,588 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 21:15:55,592 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 21:15:55,596 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 21:15:55,607 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 21:15:55,610 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 21:15:55,613 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 21:15:55,619 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 21:15:55,697 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:15:55,698 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) [2019-11-28 21:15:55,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:55,715 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:55,726 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:55,726 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:55,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:55,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:55,743 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:55,743 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:55,759 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:55,759 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:55,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:55,767 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:55,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:55,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:55,782 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:55,782 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:55,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:55,805 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:55,809 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:55,809 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 21:15:55,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:55,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:55,831 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:55,832 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:55,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:55,847 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:55,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 21:15:55,869 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:55,939 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 21:15:55,943 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:15:55,944 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:15:55,944 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:15:55,944 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:15:55,944 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 21:15:55,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:55,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:15:55,946 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:15:55,946 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration1_Loop [2019-11-28 21:15:55,946 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:15:55,947 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:15:55,948 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 21:15:55,953 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 21:15:55,956 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 21:15:55,959 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 21:15:55,963 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 21:15:55,966 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 21:15:55,970 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 21:15:56,028 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:15:56,033 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 21:15:56,048 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 21:15:56,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:56,051 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:56,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:56,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:56,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:56,054 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:56,054 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:56,058 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:56,076 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 21:15:56,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:56,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:56,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:56,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:56,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:56,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:56,081 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:56,085 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 21:15:56,093 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 21:15:56,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:56,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:56,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:56,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:56,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:56,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:56,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:56,097 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:56,106 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 21:15:56,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:56,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:56,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:56,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:56,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:56,113 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:56,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:56,121 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:56,137 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 21:15:56,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:56,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:56,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:56,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:56,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:56,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:56,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:56,145 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:56,153 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 21:15:56,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:56,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:56,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:56,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:56,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:56,157 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:56,157 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:56,160 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 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 21:15:56,169 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 21:15:56,171 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:56,171 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:56,171 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:56,171 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:56,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:56,173 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:56,174 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:56,176 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 21:15:56,181 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 21:15:56,181 INFO L444 ModelExtractionUtils]: 1 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:56,197 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 21:15:56,197 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 21:15:56,197 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 21:15:56,198 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 21:15:56,203 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:56,270 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 21:15:56,273 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:15:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:56,300 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 21:15:56,301 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:15:56,342 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 21:15:56,359 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 21:15:56,361 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states. Second operand 4 states. [2019-11-28 21:15:56,472 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states.. Second operand 4 states. Result 50 states and 65 transitions. Complement of second has 12 states. [2019-11-28 21:15:56,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 21:15:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 21:15:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-28 21:15:56,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-28 21:15:56,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:56,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-28 21:15:56,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:56,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-28 21:15:56,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:56,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 65 transitions. [2019-11-28 21:15:56,495 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 21:15:56,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 31 states and 44 transitions. [2019-11-28 21:15:56,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-28 21:15:56,510 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-28 21:15:56,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 44 transitions. [2019-11-28 21:15:56,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 21:15:56,512 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2019-11-28 21:15:56,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 44 transitions. [2019-11-28 21:15:56,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2019-11-28 21:15:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 21:15:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2019-11-28 21:15:56,562 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2019-11-28 21:15:56,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:15:56,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 21:15:56,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 21:15:56,567 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 5 states. [2019-11-28 21:15:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:15:56,639 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2019-11-28 21:15:56,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 21:15:56,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2019-11-28 21:15:56,642 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 21:15:56,644 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 26 states and 33 transitions. [2019-11-28 21:15:56,645 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-11-28 21:15:56,645 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-28 21:15:56,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 33 transitions. [2019-11-28 21:15:56,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:15:56,646 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-28 21:15:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 33 transitions. [2019-11-28 21:15:56,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2019-11-28 21:15:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 21:15:56,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-28 21:15:56,660 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-28 21:15:56,660 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-28 21:15:56,661 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 21:15:56,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2019-11-28 21:15:56,662 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 21:15:56,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:15:56,662 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:15:56,666 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:15:56,666 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:15:56,666 INFO L794 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 197#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 198#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 192#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 191#multENTRY ~n := #in~n;~m := #in~m; 193#L16 assume !(~m < 0); 194#L19 assume !(0 == ~m); 187#L22 call #t~ret1 := mult(~n, ~m - 1);< 190#multENTRY [2019-11-28 21:15:56,666 INFO L796 eck$LassoCheckResult]: Loop: 190#multENTRY ~n := #in~n;~m := #in~m; 205#L16 assume ~m < 0; 186#L17 call #t~ret0 := mult(~n, -~m);< 190#multENTRY [2019-11-28 21:15:56,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:56,667 INFO L82 PathProgramCache]: Analyzing trace with hash -108528961, now seen corresponding path program 1 times [2019-11-28 21:15:56,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:56,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60082066] [2019-11-28 21:15:56,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:56,702 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:56,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:56,702 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 2 times [2019-11-28 21:15:56,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:56,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432487046] [2019-11-28 21:15:56,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:56,718 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:56,720 INFO L82 PathProgramCache]: Analyzing trace with hash 924096870, now seen corresponding path program 1 times [2019-11-28 21:15:56,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:56,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485775248] [2019-11-28 21:15:56,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:15:56,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485775248] [2019-11-28 21:15:56,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:15:56,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 21:15:56,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391469978] [2019-11-28 21:15:56,839 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:15:56,839 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:15:56,839 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:15:56,840 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:15:56,840 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 21:15:56,840 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:56,840 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:15:56,840 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:15:56,840 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2019-11-28 21:15:56,840 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:15:56,841 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:15:56,842 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 21:15:56,844 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 21:15:56,847 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 21:15:56,849 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 21:15:56,851 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 21:15:56,853 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 21:15:56,857 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 21:15:56,896 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:15:56,896 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2019-11-28 21:15:56,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:56,906 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:56,911 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:56,911 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:56,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:56,931 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:56,935 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:56,936 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 21:15:56,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:56,955 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 [2019-11-28 21:15:56,959 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:56,959 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 21:15:56,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:56,987 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 21:15:56,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:56,991 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:57,008 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,013 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:57,013 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:57,023 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:57,027 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:57,036 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 21:15:57,050 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,134 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 21:15:57,136 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:15:57,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:15:57,137 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:15:57,137 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:15:57,137 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 21:15:57,137 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,137 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:15:57,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:15:57,138 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration2_Loop [2019-11-28 21:15:57,138 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:15:57,138 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:15:57,139 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 21:15:57,143 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 21:15:57,148 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 21:15:57,152 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 21:15:57,154 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 21:15:57,157 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 21:15:57,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:15:57,203 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:15:57,204 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,211 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 21:15:57,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:57,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:57,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:57,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:57,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,215 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:57,215 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:57,217 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,223 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 21:15:57,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:57,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:57,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:57,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:57,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:57,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:57,229 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,232 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,241 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 21:15:57,243 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:57,243 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:57,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:57,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:57,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:57,247 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:57,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,250 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,258 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 21:15:57,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:57,262 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:57,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:57,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:57,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:57,263 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:57,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,270 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,277 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 Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:57,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:57,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:57,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:57,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:57,285 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:57,285 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:57,290 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,297 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 21:15:57,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:57,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:57,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:57,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:57,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:57,301 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:57,301 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,305 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 21:15:57,308 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 21:15:57,308 INFO L444 ModelExtractionUtils]: 1 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:57,314 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 21:15:57,314 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 21:15:57,315 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 21:15:57,315 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,325 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 21:15:57,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:57,368 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 21:15:57,369 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:15:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:57,387 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 21:15:57,388 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:15:57,416 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 21:15:57,417 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 21:15:57,417 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 21:15:57,551 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 72 states and 91 transitions. Complement of second has 15 states. [2019-11-28 21:15:57,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-28 21:15:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 21:15:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2019-11-28 21:15:57,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-28 21:15:57,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:57,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 11 letters. Loop has 3 letters. [2019-11-28 21:15:57,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:57,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-28 21:15:57,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:57,555 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 91 transitions. [2019-11-28 21:15:57,565 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-28 21:15:57,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 50 states and 65 transitions. [2019-11-28 21:15:57,571 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2019-11-28 21:15:57,572 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2019-11-28 21:15:57,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 65 transitions. [2019-11-28 21:15:57,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 21:15:57,573 INFO L688 BuchiCegarLoop]: Abstraction has 50 states and 65 transitions. [2019-11-28 21:15:57,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 65 transitions. [2019-11-28 21:15:57,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2019-11-28 21:15:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-28 21:15:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2019-11-28 21:15:57,581 INFO L711 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-28 21:15:57,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:15:57,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 21:15:57,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 21:15:57,582 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 5 states. [2019-11-28 21:15:57,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:15:57,632 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2019-11-28 21:15:57,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 21:15:57,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 59 transitions. [2019-11-28 21:15:57,635 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-11-28 21:15:57,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 47 transitions. [2019-11-28 21:15:57,637 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-28 21:15:57,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-11-28 21:15:57,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 47 transitions. [2019-11-28 21:15:57,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:15:57,638 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-11-28 21:15:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 47 transitions. [2019-11-28 21:15:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-11-28 21:15:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-28 21:15:57,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2019-11-28 21:15:57,645 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-11-28 21:15:57,645 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-11-28 21:15:57,645 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 21:15:57,646 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 47 transitions. [2019-11-28 21:15:57,647 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-11-28 21:15:57,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:15:57,648 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:15:57,649 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:15:57,649 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:15:57,650 INFO L794 eck$LassoCheckResult]: Stem: 461#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 458#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 459#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 460#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 467#multENTRY ~n := #in~n;~m := #in~m; 479#L16 assume !(~m < 0); 476#L19 assume 0 == ~m;#res := 0; 475#multFINAL assume true; 469#multEXIT >#45#return; 466#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 451#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 452#multENTRY [2019-11-28 21:15:57,650 INFO L796 eck$LassoCheckResult]: Loop: 452#multENTRY ~n := #in~n;~m := #in~m; 474#L16 assume ~m < 0; 450#L17 call #t~ret0 := mult(~n, -~m);< 452#multENTRY [2019-11-28 21:15:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:57,650 INFO L82 PathProgramCache]: Analyzing trace with hash 922353405, now seen corresponding path program 1 times [2019-11-28 21:15:57,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:57,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236811250] [2019-11-28 21:15:57,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:57,669 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:57,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:57,669 INFO L82 PathProgramCache]: Analyzing trace with hash 29924, now seen corresponding path program 3 times [2019-11-28 21:15:57,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:57,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416365909] [2019-11-28 21:15:57,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:57,676 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:57,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1370471320, now seen corresponding path program 1 times [2019-11-28 21:15:57,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:57,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858540433] [2019-11-28 21:15:57,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:15:57,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858540433] [2019-11-28 21:15:57,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:15:57,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 21:15:57,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352457652] [2019-11-28 21:15:57,781 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:15:57,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:15:57,781 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:15:57,781 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:15:57,782 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 21:15:57,782 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:15:57,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:15:57,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2019-11-28 21:15:57,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:15:57,782 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:15:57,784 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 21:15:57,786 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 21:15:57,789 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 21:15:57,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:15:57,792 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 21:15:57,798 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 21:15:57,800 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 21:15:57,852 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:15:57,852 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:57,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:57,864 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:57,865 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:57,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:57,872 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:57,872 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:57,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:57,879 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:57,880 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:57,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:57,887 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:57,887 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:57,894 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 21:15:57,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:57,914 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 21:15:57,916 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:15:57,916 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:15:57,916 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:15:57,916 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:15:57,916 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 21:15:57,916 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:57,916 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:15:57,917 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:15:57,917 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration3_Loop [2019-11-28 21:15:57,917 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:15:57,917 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:15:57,918 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 21:15:57,925 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 21:15:57,927 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 21:15:57,929 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 21:15:57,931 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 21:15:57,936 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 21:15:57,938 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 21:15:57,992 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:15:57,992 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:58,007 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 21:15:58,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:58,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:58,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:58,009 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:58,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:58,010 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:58,010 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,012 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:58,018 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 21:15:58,020 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:58,020 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:58,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:58,020 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:58,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:58,021 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:58,021 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,023 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:58,029 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 Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:58,030 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:58,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:58,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:58,031 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:58,031 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:58,031 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:58,032 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 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,036 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 21:15:58,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:58,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:58,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:58,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:58,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:58,038 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:58,038 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:58,042 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:58,053 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 21:15:58,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:58,055 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:58,055 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:58,055 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:58,055 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:58,056 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:58,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,059 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 21:15:58,061 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 21:15:58,061 INFO L444 ModelExtractionUtils]: 1 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 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,066 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 21:15:58,066 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 21:15:58,066 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 21:15:58,066 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2019-11-28 21:15:58,068 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 21:15:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:58,132 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 21:15:58,134 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:15:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:58,160 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 21:15:58,161 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:15:58,179 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 21:15:58,180 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-11-28 21:15:58,180 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 47 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-11-28 21:15:58,272 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 47 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 81 states and 90 transitions. Complement of second has 14 states. [2019-11-28 21:15:58,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 21:15:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 21:15:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2019-11-28 21:15:58,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 11 letters. Loop has 3 letters. [2019-11-28 21:15:58,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:58,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 14 letters. Loop has 3 letters. [2019-11-28 21:15:58,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:58,276 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 11 letters. Loop has 6 letters. [2019-11-28 21:15:58,276 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:58,276 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 90 transitions. [2019-11-28 21:15:58,279 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-28 21:15:58,280 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 62 states and 70 transitions. [2019-11-28 21:15:58,281 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-11-28 21:15:58,281 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2019-11-28 21:15:58,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 70 transitions. [2019-11-28 21:15:58,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 21:15:58,281 INFO L688 BuchiCegarLoop]: Abstraction has 62 states and 70 transitions. [2019-11-28 21:15:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 70 transitions. [2019-11-28 21:15:58,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 35. [2019-11-28 21:15:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-28 21:15:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-11-28 21:15:58,286 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-11-28 21:15:58,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:15:58,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 21:15:58,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 21:15:58,287 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2019-11-28 21:15:58,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:15:58,315 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-11-28 21:15:58,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 21:15:58,315 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2019-11-28 21:15:58,316 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-28 21:15:58,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 39 transitions. [2019-11-28 21:15:58,318 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-28 21:15:58,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-28 21:15:58,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 39 transitions. [2019-11-28 21:15:58,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:15:58,319 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-11-28 21:15:58,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 39 transitions. [2019-11-28 21:15:58,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-28 21:15:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 21:15:58,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-28 21:15:58,323 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-28 21:15:58,323 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-28 21:15:58,323 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 21:15:58,323 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2019-11-28 21:15:58,324 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-28 21:15:58,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:15:58,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:15:58,325 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:15:58,325 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 21:15:58,325 INFO L794 eck$LassoCheckResult]: Stem: 741#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 738#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 739#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 740#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 747#multENTRY ~n := #in~n;~m := #in~m; 754#L16 assume !(~m < 0); 752#L19 assume 0 == ~m;#res := 0; 751#multFINAL assume true; 750#multEXIT >#45#return; 746#L34-1 main_~res1~0 := main_#t~ret4;havoc main_#t~ret4; 736#L35 call main_#t~ret5 := mult(main_~n~0, main_~m~0);< 733#multENTRY [2019-11-28 21:15:58,325 INFO L796 eck$LassoCheckResult]: Loop: 733#multENTRY ~n := #in~n;~m := #in~m; 735#L16 assume !(~m < 0); 737#L19 assume !(0 == ~m); 734#L22 call #t~ret1 := mult(~n, ~m - 1);< 733#multENTRY [2019-11-28 21:15:58,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:58,326 INFO L82 PathProgramCache]: Analyzing trace with hash 922353405, now seen corresponding path program 2 times [2019-11-28 21:15:58,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:58,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009895453] [2019-11-28 21:15:58,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,340 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:58,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:58,341 INFO L82 PathProgramCache]: Analyzing trace with hash 929639, now seen corresponding path program 1 times [2019-11-28 21:15:58,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:58,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497122094] [2019-11-28 21:15:58,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,347 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:58,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:58,348 INFO L82 PathProgramCache]: Analyzing trace with hash 465064035, now seen corresponding path program 1 times [2019-11-28 21:15:58,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:58,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223137866] [2019-11-28 21:15:58,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,364 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:58,428 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:15:58,429 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:15:58,429 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:15:58,429 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:15:58,429 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 21:15:58,429 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,429 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:15:58,429 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:15:58,430 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2019-11-28 21:15:58,430 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:15:58,430 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:15:58,431 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 21:15:58,435 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 21:15:58,436 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 21:15:58,438 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 21:15:58,447 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 21:15:58,449 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 21:15:58,451 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 21:15:58,498 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:15:58,498 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:58,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:58,510 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,516 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:58,517 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:58,523 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:58,526 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:58,526 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:58,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:58,541 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:58,541 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:58,547 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 21:15:58,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:58,598 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 21:15:58,600 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:15:58,600 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:15:58,600 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:15:58,600 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:15:58,600 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 21:15:58,600 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,600 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:15:58,601 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:15:58,601 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration4_Loop [2019-11-28 21:15:58,601 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:15:58,601 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:15:58,602 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 21:15:58,605 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 21:15:58,606 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 21:15:58,617 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 21:15:58,618 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 21:15:58,620 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 21:15:58,621 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 21:15:58,678 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:15:58,678 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,683 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 21:15:58,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:58,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:58,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:58,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:58,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:58,686 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:58,686 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:58,687 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 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,693 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 21:15:58,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:58,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:58,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:58,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:58,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:58,695 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:58,696 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:58,700 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 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,706 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 21:15:58,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:58,707 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:58,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:58,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:58,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:58,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:58,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:58,711 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 21:15:58,713 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 21:15:58,713 INFO L444 ModelExtractionUtils]: 1 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 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,717 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 21:15:58,717 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 21:15:58,717 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 21:15:58,718 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2019-11-28 21:15:58,719 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 21:15:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:58,748 INFO L264 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 21:15:58,749 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:15:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:58,784 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 21:15:58,785 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:15:58,805 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 21:15:58,806 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-11-28 21:15:58,806 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 35 transitions. cyclomatic complexity: 6 Second operand 5 states. [2019-11-28 21:15:58,884 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 35 transitions. cyclomatic complexity: 6. Second operand 5 states. Result 41 states and 45 transitions. Complement of second has 13 states. [2019-11-28 21:15:58,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 21:15:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 21:15:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-28 21:15:58,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-28 21:15:58,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:58,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-28 21:15:58,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:58,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-28 21:15:58,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:58,890 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 45 transitions. [2019-11-28 21:15:58,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 21:15:58,891 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 15 states and 15 transitions. [2019-11-28 21:15:58,891 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-28 21:15:58,891 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-28 21:15:58,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 15 transitions. [2019-11-28 21:15:58,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:15:58,892 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-28 21:15:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 15 transitions. [2019-11-28 21:15:58,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 8. [2019-11-28 21:15:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 21:15:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-28 21:15:58,893 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-28 21:15:58,893 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-28 21:15:58,893 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 21:15:58,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 8 transitions. [2019-11-28 21:15:58,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 21:15:58,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:15:58,894 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:15:58,894 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 21:15:58,894 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 21:15:58,894 INFO L794 eck$LassoCheckResult]: Stem: 892#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_~m~0, main_~n~0, main_~res1~0, main_~res2~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 893#L27 assume !(main_~m~0 < 0 || main_~m~0 > 46340);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 886#L31 assume !(main_~n~0 < 0 || main_~n~0 > 46340); 887#L34 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 889#multENTRY [2019-11-28 21:15:58,895 INFO L796 eck$LassoCheckResult]: Loop: 889#multENTRY ~n := #in~n;~m := #in~m; 890#L16 assume !(~m < 0); 891#L19 assume !(0 == ~m); 888#L22 call #t~ret1 := mult(~n, ~m - 1);< 889#multENTRY [2019-11-28 21:15:58,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:58,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1390425, now seen corresponding path program 2 times [2019-11-28 21:15:58,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:58,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878399452] [2019-11-28 21:15:58,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,902 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:58,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:58,903 INFO L82 PathProgramCache]: Analyzing trace with hash 929639, now seen corresponding path program 2 times [2019-11-28 21:15:58,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:58,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114921242] [2019-11-28 21:15:58,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,908 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:58,909 INFO L82 PathProgramCache]: Analyzing trace with hash -108528961, now seen corresponding path program 2 times [2019-11-28 21:15:58,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:15:58,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974209359] [2019-11-28 21:15:58,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:15:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:15:58,918 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:15:58,977 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:15:58,978 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:15:58,978 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:15:58,978 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:15:58,978 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 21:15:58,978 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:58,978 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:15:58,978 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:15:58,978 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2019-11-28 21:15:58,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:15:58,979 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:15:58,980 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 21:15:58,982 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 21:15:58,983 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 21:15:58,985 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 21:15:58,987 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 21:15:58,989 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 21:15:58,998 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 21:15:59,062 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:15:59,063 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:59,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:59,070 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:59,070 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:59,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:59,078 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:59,078 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:59,086 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:59,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:59,090 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:59,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:59,098 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:59,099 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:59,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 21:15:59,109 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 21:15:59,109 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 21:15:59,115 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:15:59,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 21:15:59,128 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,187 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 21:15:59,188 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:15:59,189 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:15:59,189 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:15:59,189 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:15:59,189 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 21:15:59,189 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,189 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:15:59,189 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:15:59,190 INFO L133 ssoRankerPreferences]: Filename of dumped script: MultCommutative-2.c_Iteration5_Loop [2019-11-28 21:15:59,190 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:15:59,190 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:15:59,191 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 21:15:59,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:15:59,201 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 21:15:59,203 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 21:15:59,205 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 21:15:59,207 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 21:15:59,213 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 21:15:59,269 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:15:59,269 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,277 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 21:15:59,278 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:59,278 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:59,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:59,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:59,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:59,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:59,279 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:59,281 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 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,286 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 21:15:59,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:59,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:59,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:59,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:59,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:59,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:59,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:59,291 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 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,296 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 21:15:59,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:59,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:59,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:59,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:59,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:59,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:59,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:59,301 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 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,306 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 21:15:59,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:59,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:59,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:59,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:59,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:59,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:59,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:59,310 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 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,314 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 21:15:59,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:59,315 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:59,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:59,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:59,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:59,317 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:59,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:59,319 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 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,324 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 21:15:59,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:15:59,325 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:15:59,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:15:59,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:15:59,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:15:59,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:15:59,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:15:59,329 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 21:15:59,334 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 21:15:59,335 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:15:59,339 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 21:15:59,339 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 21:15:59,339 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 21:15:59,339 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = 1*mult_#in~m Supporting invariants [] [2019-11-28 21:15:59,341 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 21:15:59,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:15:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:59,363 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 21:15:59,364 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:15:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:15:59,381 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 21:15:59,381 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:15:59,398 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 21:15:59,399 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 21:15:59,399 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 8 transitions. cyclomatic complexity: 1 Second operand 4 states. [2019-11-28 21:15:59,438 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 8 transitions. cyclomatic complexity: 1. Second operand 4 states. Result 18 states and 18 transitions. Complement of second has 11 states. [2019-11-28 21:15:59,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 21:15:59,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 21:15:59,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-28 21:15:59,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-28 21:15:59,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:59,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-28 21:15:59,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:59,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 8 letters. [2019-11-28 21:15:59,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:15:59,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 18 transitions. [2019-11-28 21:15:59,443 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 21:15:59,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2019-11-28 21:15:59,444 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 21:15:59,444 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 21:15:59,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 21:15:59,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:15:59,444 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 21:15:59,445 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 21:15:59,445 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 21:15:59,445 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 21:15:59,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 21:15:59,445 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 21:15:59,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 21:15:59,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 09:15:59 BoogieIcfgContainer [2019-11-28 21:15:59,452 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 21:15:59,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 21:15:59,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 21:15:59,453 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 21:15:59,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:15:55" (3/4) ... [2019-11-28 21:15:59,457 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 21:15:59,457 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 21:15:59,459 INFO L168 Benchmark]: Toolchain (without parser) took 4957.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 952.3 MB in the beginning and 813.0 MB in the end (delta: 139.3 MB). Peak memory consumption was 325.4 MB. Max. memory is 11.5 GB. [2019-11-28 21:15:59,464 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:15:59,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.08 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 21:15:59,465 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 21:15:59,466 INFO L168 Benchmark]: Boogie Preprocessor took 13.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 21:15:59,471 INFO L168 Benchmark]: RCFGBuilder took 266.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-11-28 21:15:59,471 INFO L168 Benchmark]: BuchiAutomizer took 4343.38 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 88.1 MB). Free memory was 1.1 GB in the beginning and 813.0 MB in the end (delta: 263.0 MB). Peak memory consumption was 351.0 MB. Max. memory is 11.5 GB. [2019-11-28 21:15:59,472 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 1.2 GB. Free memory is still 813.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:15:59,477 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 243.08 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 81.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 266.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4343.38 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 88.1 MB). Free memory was 1.1 GB in the beginning and 813.0 MB in the end (delta: 263.0 MB). Peak memory consumption was 351.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.55 ms. Allocated memory is still 1.2 GB. Free memory is still 813.0 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 (3 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function -1 * \old(m) and consists of 5 locations. One deterministic module has affine ranking function -1 * \old(m) and consists of 5 locations. One deterministic module has affine ranking function \old(m) and consists of 5 locations. One deterministic module has affine ranking function \old(m) and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 53 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 41 states and ocurred in iteration 2. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 120 SDtfs, 136 SDslu, 102 SDs, 0 SdLazy, 159 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp80 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 24 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...