./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/DivMinus2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 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/termination-restricted-15/DivMinus2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4113f10404cd50c48db8fb998633f502f8a0b01a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:42:13,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:42:13,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:42:13,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:42:13,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:42:13,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:42:13,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:42:13,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:42:13,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:42:13,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:42:13,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:42:13,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:42:13,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:42:13,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:42:13,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:42:13,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:42:13,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:42:13,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:42:13,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:42:13,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:42:13,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:42:13,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:42:13,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:42:13,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:42:13,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:42:13,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:42:13,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:42:13,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:42:13,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:42:13,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:42:13,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:42:13,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:42:13,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:42:13,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:42:13,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:42:13,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:42:13,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:42:13,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:42:13,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:42:13,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:42:13,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:42:13,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:42:13,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:42:13,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:42:13,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:42:13,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:42:13,474 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:42:13,475 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:42:13,475 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:42:13,475 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:42:13,476 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:42:13,476 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:42:13,476 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:42:13,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:42:13,477 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:42:13,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:42:13,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:42:13,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:42:13,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:42:13,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:42:13,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:42:13,479 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:42:13,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:42:13,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:42:13,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:42:13,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:42:13,480 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:42:13,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:42:13,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:42:13,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:42:13,481 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:42:13,482 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:42:13,482 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4113f10404cd50c48db8fb998633f502f8a0b01a [2020-10-19 18:42:13,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:42:13,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:42:13,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:42:13,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:42:13,844 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:42:13,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2020-10-19 18:42:13,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287ecd385/7a8a71d286144f32bd381517799160f9/FLAGade681a6c [2020-10-19 18:42:14,316 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:42:14,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2020-10-19 18:42:14,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287ecd385/7a8a71d286144f32bd381517799160f9/FLAGade681a6c [2020-10-19 18:42:14,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287ecd385/7a8a71d286144f32bd381517799160f9 [2020-10-19 18:42:14,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:42:14,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:42:14,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:42:14,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:42:14,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:42:14,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:42:14" (1/1) ... [2020-10-19 18:42:14,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422479c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:14, skipping insertion in model container [2020-10-19 18:42:14,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:42:14" (1/1) ... [2020-10-19 18:42:14,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:42:14,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:42:14,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:42:14,979 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:42:14,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:42:15,004 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:42:15,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15 WrapperNode [2020-10-19 18:42:15,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:42:15,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:42:15,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:42:15,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:42:15,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (1/1) ... [2020-10-19 18:42:15,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (1/1) ... [2020-10-19 18:42:15,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:42:15,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:42:15,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:42:15,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:42:15,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (1/1) ... [2020-10-19 18:42:15,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (1/1) ... [2020-10-19 18:42:15,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (1/1) ... [2020-10-19 18:42:15,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (1/1) ... [2020-10-19 18:42:15,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (1/1) ... [2020-10-19 18:42:15,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (1/1) ... [2020-10-19 18:42:15,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (1/1) ... [2020-10-19 18:42:15,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:42:15,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:42:15,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:42:15,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:42:15,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (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 [2020-10-19 18:42:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:42:15,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:42:15,324 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:42:15,324 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-19 18:42:15,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:42:15 BoogieIcfgContainer [2020-10-19 18:42:15,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:42:15,327 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:42:15,327 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:42:15,330 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:42:15,331 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:42:15,331 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:42:14" (1/3) ... [2020-10-19 18:42:15,333 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16e190ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:42:15, skipping insertion in model container [2020-10-19 18:42:15,333 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:42:15,333 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:15" (2/3) ... [2020-10-19 18:42:15,333 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16e190ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:42:15, skipping insertion in model container [2020-10-19 18:42:15,334 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:42:15,334 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:42:15" (3/3) ... [2020-10-19 18:42:15,336 INFO L373 chiAutomizerObserver]: Analyzing ICFG DivMinus2.c [2020-10-19 18:42:15,393 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:42:15,393 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:42:15,393 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:42:15,393 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:42:15,394 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:42:15,394 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:42:15,394 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:42:15,394 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:42:15,414 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-19 18:42:15,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:42:15,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:15,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:15,452 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:42:15,453 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:42:15,453 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:42:15,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-19 18:42:15,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:42:15,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:15,455 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:15,455 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:42:15,455 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:42:15,465 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 7#L14-2true [2020-10-19 18:42:15,466 INFO L796 eck$LassoCheckResult]: Loop: 7#L14-2true assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 3#L17-2true assume !(0 != main_~ytmp~0); 11#L16-2true main_~res~0 := 1 + main_~res~0; 7#L14-2true [2020-10-19 18:42:15,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:15,473 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-19 18:42:15,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:15,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177435981] [2020-10-19 18:42:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:15,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:15,564 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:15,578 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:15,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:15,579 INFO L82 PathProgramCache]: Analyzing trace with hash 39957, now seen corresponding path program 1 times [2020-10-19 18:42:15,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:15,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063700008] [2020-10-19 18:42:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:15,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063700008] [2020-10-19 18:42:15,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:42:15,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:42:15,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989409961] [2020-10-19 18:42:15,648 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:42:15,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:42:15,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:42:15,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:42:15,664 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-10-19 18:42:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:42:15,715 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2020-10-19 18:42:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:42:15,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2020-10-19 18:42:15,719 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-19 18:42:15,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 8 transitions. [2020-10-19 18:42:15,723 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-19 18:42:15,724 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-19 18:42:15,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 8 transitions. [2020-10-19 18:42:15,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:42:15,725 INFO L691 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-19 18:42:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 8 transitions. [2020-10-19 18:42:15,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-10-19 18:42:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 18:42:15,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-10-19 18:42:15,746 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-19 18:42:15,746 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-19 18:42:15,746 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:42:15,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-10-19 18:42:15,747 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-19 18:42:15,747 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:15,747 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:15,747 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:42:15,747 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-10-19 18:42:15,748 INFO L794 eck$LassoCheckResult]: Stem: 30#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 31#L14-2 [2020-10-19 18:42:15,748 INFO L796 eck$LassoCheckResult]: Loop: 31#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 28#L17-2 assume !!(0 != main_~ytmp~0); 29#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 32#L17-2 assume !(0 != main_~ytmp~0); 33#L16-2 main_~res~0 := 1 + main_~res~0; 31#L14-2 [2020-10-19 18:42:15,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:15,748 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-10-19 18:42:15,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:15,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386408363] [2020-10-19 18:42:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:15,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:15,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:15,757 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:15,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:15,758 INFO L82 PathProgramCache]: Analyzing trace with hash 38452088, now seen corresponding path program 1 times [2020-10-19 18:42:15,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:15,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982904243] [2020-10-19 18:42:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:15,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:15,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:15,778 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:15,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:15,779 INFO L82 PathProgramCache]: Analyzing trace with hash 925955769, now seen corresponding path program 1 times [2020-10-19 18:42:15,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:15,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475016964] [2020-10-19 18:42:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:15,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:15,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:15,801 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:15,898 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:15,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:15,899 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:15,899 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:15,899 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:42:15,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:15,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:15,900 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:15,900 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2020-10-19 18:42:15,900 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:15,900 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:15,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:15,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:15,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:15,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:16,070 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:16,071 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:16,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:16,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:42:16,095 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:42:16,095 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:16,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:16,133 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:16,139 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:42:16,139 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:16,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:16,183 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:16,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:42:16,214 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:42:16,231 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:42:16,231 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=-5}, {ULTIMATE.start_main_~res~0=6}, {ULTIMATE.start_main_~res~0=0}] Lambdas: [1, 1, 0] Nus: [0, 1] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:16,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:16,254 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-19 18:42:16,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:42:16,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:42:16,508 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:42:16,510 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:16,510 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:16,510 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:16,511 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:16,511 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:42:16,511 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:16,511 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:16,511 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:16,512 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2020-10-19 18:42:16,512 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:16,512 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:16,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:16,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:16,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:16,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:16,610 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:16,616 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-19 18:42:16,630 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:16,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:16,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:16,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:16,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:16,638 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:42:16,639 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:42:16,644 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:16,680 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 [2020-10-19 18:42:16,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:16,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:16,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:16,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:16,686 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:42:16,686 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:42:16,692 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:16,716 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 [2020-10-19 18:42:16,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:16,719 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:42:16,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:16,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:16,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:16,728 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:42:16,728 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:42:16,735 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:42:16,749 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-19 18:42:16,749 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. 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 [2020-10-19 18:42:16,763 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:42:16,763 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:42:16,764 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:42:16,764 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-19 18:42:16,791 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:42:16,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:16,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:16,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:16,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:42:16,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:16,896 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 [2020-10-19 18:42:16,897 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-10-19 18:42:16,940 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 23 states and 33 transitions. Complement of second has 7 states. [2020-10-19 18:42:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:42:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-19 18:42:16,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 5 letters. [2020-10-19 18:42:16,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:16,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 5 letters. [2020-10-19 18:42:16,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:16,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 10 letters. [2020-10-19 18:42:16,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:16,947 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 33 transitions. [2020-10-19 18:42:16,949 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-19 18:42:16,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 33 transitions. [2020-10-19 18:42:16,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-19 18:42:16,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-10-19 18:42:16,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 33 transitions. [2020-10-19 18:42:16,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:42:16,953 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 33 transitions. [2020-10-19 18:42:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 33 transitions. [2020-10-19 18:42:16,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-10-19 18:42:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 18:42:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2020-10-19 18:42:16,958 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2020-10-19 18:42:16,958 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2020-10-19 18:42:16,958 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:42:16,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 29 transitions. [2020-10-19 18:42:16,959 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-19 18:42:16,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:16,959 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:16,960 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:42:16,960 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:42:16,960 INFO L794 eck$LassoCheckResult]: Stem: 104#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 105#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 110#L17-2 assume !!(0 != main_~ytmp~0); 106#L17 assume !(main_~ytmp~0 > 0);main_~ytmp~0 := 1 + main_~ytmp~0;main_~x~0 := 1 + main_~x~0; 107#L17-2 [2020-10-19 18:42:16,960 INFO L796 eck$LassoCheckResult]: Loop: 107#L17-2 assume !!(0 != main_~ytmp~0); 101#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 107#L17-2 [2020-10-19 18:42:16,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:16,961 INFO L82 PathProgramCache]: Analyzing trace with hash 963535, now seen corresponding path program 1 times [2020-10-19 18:42:16,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:16,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441549039] [2020-10-19 18:42:16,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:16,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441549039] [2020-10-19 18:42:16,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:42:16,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:42:16,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629203249] [2020-10-19 18:42:16,981 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:42:16,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:16,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1572, now seen corresponding path program 1 times [2020-10-19 18:42:16,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:16,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965556985] [2020-10-19 18:42:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:16,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:16,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:16,991 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:17,017 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:17,017 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:17,017 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:17,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:17,018 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:42:17,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:17,018 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:17,018 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:17,018 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2020-10-19 18:42:17,019 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:17,019 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:17,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,104 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:17,104 INFO L404 LassoAnalysis]: Checking for nontermination... 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 [2020-10-19 18:42:17,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:17,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:42:17,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:42:17,113 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:17,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:17,158 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:17,162 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:42:17,163 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:17,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:17,207 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:17,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:42:17,263 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:17,301 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:42:17,303 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:17,303 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:17,303 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:17,304 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:17,304 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:42:17,304 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:17,304 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:17,304 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:17,304 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2020-10-19 18:42:17,304 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:17,305 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:17,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,370 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:17,370 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-19 18:42:17,381 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 [2020-10-19 18:42:17,383 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:17,383 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:17,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:17,384 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:17,386 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:42:17,387 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:17,391 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:17,420 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 [2020-10-19 18:42:17,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:17,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:42:17,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:17,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:17,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:17,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:42:17,425 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:42:17,428 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:42:17,431 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-19 18:42:17,432 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:17,435 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:42:17,435 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:42:17,435 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:42:17,436 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:17,456 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:42:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:17,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:17,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:17,485 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:17,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:17,487 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-19 18:42:17,487 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 12 Second operand 3 states. [2020-10-19 18:42:17,505 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 28 states and 42 transitions. Complement of second has 5 states. [2020-10-19 18:42:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:17,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-10-19 18:42:17,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-19 18:42:17,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:17,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-19 18:42:17,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:17,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 4 letters. Loop has 4 letters. [2020-10-19 18:42:17,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:17,508 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 42 transitions. [2020-10-19 18:42:17,510 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-19 18:42:17,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 39 transitions. [2020-10-19 18:42:17,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-10-19 18:42:17,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-19 18:42:17,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 39 transitions. [2020-10-19 18:42:17,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:42:17,512 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 39 transitions. [2020-10-19 18:42:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 39 transitions. [2020-10-19 18:42:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-19 18:42:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 18:42:17,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2020-10-19 18:42:17,517 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 37 transitions. [2020-10-19 18:42:17,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:42:17,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:42:17,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:42:17,518 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 3 states. [2020-10-19 18:42:17,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:42:17,531 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2020-10-19 18:42:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:42:17,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 37 transitions. [2020-10-19 18:42:17,534 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-19 18:42:17,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 21 states and 31 transitions. [2020-10-19 18:42:17,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-10-19 18:42:17,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-19 18:42:17,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 31 transitions. [2020-10-19 18:42:17,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:42:17,535 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-19 18:42:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 31 transitions. [2020-10-19 18:42:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-19 18:42:17,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-19 18:42:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2020-10-19 18:42:17,539 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-19 18:42:17,539 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-19 18:42:17,539 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:42:17,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 31 transitions. [2020-10-19 18:42:17,540 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-19 18:42:17,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:17,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:17,541 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-10-19 18:42:17,541 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:42:17,542 INFO L794 eck$LassoCheckResult]: Stem: 238#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 239#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 236#L17-2 assume !!(0 != main_~ytmp~0); 237#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 254#L17-2 assume !!(0 != main_~ytmp~0); 240#L17 [2020-10-19 18:42:17,542 INFO L796 eck$LassoCheckResult]: Loop: 240#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 241#L17-2 assume !!(0 != main_~ytmp~0); 240#L17 [2020-10-19 18:42:17,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:17,542 INFO L82 PathProgramCache]: Analyzing trace with hash 29869542, now seen corresponding path program 1 times [2020-10-19 18:42:17,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:17,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143260287] [2020-10-19 18:42:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:17,552 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:17,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:17,561 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:17,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1662, now seen corresponding path program 2 times [2020-10-19 18:42:17,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:17,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035550530] [2020-10-19 18:42:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:17,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:17,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:17,571 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:17,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:17,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1360140509, now seen corresponding path program 2 times [2020-10-19 18:42:17,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:17,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518588287] [2020-10-19 18:42:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:17,583 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:17,595 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:17,602 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:17,631 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:17,631 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:17,631 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:17,631 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:17,632 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:42:17,632 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:17,632 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:17,632 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:17,632 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2020-10-19 18:42:17,632 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:17,632 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:17,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,719 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:17,719 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:17,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:17,723 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 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) [2020-10-19 18:42:17,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:42:17,774 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 [2020-10-19 18:42:17,872 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:42:17,875 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:17,875 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:17,875 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:17,875 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:17,875 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:42:17,876 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:17,876 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:17,876 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:17,876 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2020-10-19 18:42:17,876 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:17,876 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:17,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:17,951 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:17,951 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-19 18:42:17,972 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 [2020-10-19 18:42:17,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:17,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:42:17,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:17,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:17,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:17,976 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:42:17,976 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:17,979 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:42:17,982 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:42:17,983 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:17,994 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:42:17,994 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:42:17,995 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:42:17,995 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:18,031 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:42:18,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:18,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:18,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:18,059 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:18,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:18,077 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:42:18,078 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 31 transitions. cyclomatic complexity: 14 Second operand 3 states. [2020-10-19 18:42:18,096 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 31 transitions. cyclomatic complexity: 14. Second operand 3 states. Result 36 states and 53 transitions. Complement of second has 5 states. [2020-10-19 18:42:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-19 18:42:18,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-19 18:42:18,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:18,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-19 18:42:18,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:18,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-19 18:42:18,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:18,099 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 53 transitions. [2020-10-19 18:42:18,101 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-19 18:42:18,102 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 33 states and 48 transitions. [2020-10-19 18:42:18,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-10-19 18:42:18,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-10-19 18:42:18,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 48 transitions. [2020-10-19 18:42:18,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:42:18,103 INFO L691 BuchiCegarLoop]: Abstraction has 33 states and 48 transitions. [2020-10-19 18:42:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 48 transitions. [2020-10-19 18:42:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-10-19 18:42:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-19 18:42:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-10-19 18:42:18,107 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-10-19 18:42:18,107 INFO L594 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-10-19 18:42:18,108 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:42:18,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 42 transitions. [2020-10-19 18:42:18,109 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-19 18:42:18,109 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:18,109 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:18,110 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2020-10-19 18:42:18,110 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-10-19 18:42:18,110 INFO L794 eck$LassoCheckResult]: Stem: 338#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 339#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 343#L17-2 assume !!(0 != main_~ytmp~0); 358#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 357#L17-2 assume !!(0 != main_~ytmp~0); 337#L17 assume !(main_~ytmp~0 > 0);main_~ytmp~0 := 1 + main_~ytmp~0;main_~x~0 := 1 + main_~x~0; 354#L17-2 assume !(0 != main_~ytmp~0); 346#L16-2 [2020-10-19 18:42:18,111 INFO L796 eck$LassoCheckResult]: Loop: 346#L16-2 main_~res~0 := 1 + main_~res~0; 347#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 356#L17-2 assume !!(0 != main_~ytmp~0); 355#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 352#L17-2 assume !(0 != main_~ytmp~0); 346#L16-2 [2020-10-19 18:42:18,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:18,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1360140449, now seen corresponding path program 1 times [2020-10-19 18:42:18,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:18,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818947296] [2020-10-19 18:42:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:18,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818947296] [2020-10-19 18:42:18,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:42:18,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:42:18,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193477264] [2020-10-19 18:42:18,156 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:42:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:18,157 INFO L82 PathProgramCache]: Analyzing trace with hash 55728128, now seen corresponding path program 2 times [2020-10-19 18:42:18,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:18,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535181452] [2020-10-19 18:42:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:18,164 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:18,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:18,170 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:18,248 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:18,248 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:18,248 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:18,248 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:18,248 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:42:18,248 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:18,248 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:18,248 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:18,249 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2020-10-19 18:42:18,249 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:18,249 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:18,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:18,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:18,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:18,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:18,394 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:18,394 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-19 18:42:18,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:18,404 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 [2020-10-19 18:42:18,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:42:18,409 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:18,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:18,442 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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:18,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:42:18,468 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:42:18,665 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:42:18,666 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:18,666 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:18,667 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:18,667 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:18,667 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:42:18,667 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:18,667 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:18,667 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:18,667 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2020-10-19 18:42:18,667 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:18,667 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:18,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:18,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:18,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:18,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:18,752 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:18,752 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) [2020-10-19 18:42:18,760 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 [2020-10-19 18:42:18,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:18,762 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:42:18,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:18,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:18,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:18,764 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:42:18,764 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:18,767 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:42:18,776 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-19 18:42:18,776 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. 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) [2020-10-19 18:42:18,781 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:42:18,782 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:42:18,782 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:42:18,782 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:18,803 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:42:18,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:18,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:18,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:18,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:42:18,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:18,874 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 [2020-10-19 18:42:18,874 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-19 18:42:18,902 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 63 states and 95 transitions. Complement of second has 7 states. [2020-10-19 18:42:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:18,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-19 18:42:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-19 18:42:18,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 7 letters. Loop has 5 letters. [2020-10-19 18:42:18,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:18,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 5 letters. [2020-10-19 18:42:18,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:18,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 7 letters. Loop has 10 letters. [2020-10-19 18:42:18,905 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:18,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 95 transitions. [2020-10-19 18:42:18,907 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:42:18,908 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 48 states and 74 transitions. [2020-10-19 18:42:18,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-10-19 18:42:18,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2020-10-19 18:42:18,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2020-10-19 18:42:18,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:42:18,909 INFO L691 BuchiCegarLoop]: Abstraction has 48 states and 74 transitions. [2020-10-19 18:42:18,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2020-10-19 18:42:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-19 18:42:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-19 18:42:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 68 transitions. [2020-10-19 18:42:18,913 INFO L714 BuchiCegarLoop]: Abstraction has 44 states and 68 transitions. [2020-10-19 18:42:18,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:42:18,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:42:18,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:42:18,914 INFO L87 Difference]: Start difference. First operand 44 states and 68 transitions. Second operand 4 states. [2020-10-19 18:42:18,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:42:18,929 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2020-10-19 18:42:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:42:18,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-10-19 18:42:18,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:18,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 18 transitions. [2020-10-19 18:42:18,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-19 18:42:18,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-10-19 18:42:18,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2020-10-19 18:42:18,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:42:18,931 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2020-10-19 18:42:18,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2020-10-19 18:42:18,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-10-19 18:42:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 18:42:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-10-19 18:42:18,933 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-10-19 18:42:18,933 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-10-19 18:42:18,933 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 18:42:18,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2020-10-19 18:42:18,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:18,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:18,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:18,935 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1] [2020-10-19 18:42:18,935 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:42:18,935 INFO L794 eck$LassoCheckResult]: Stem: 551#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 552#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 549#L17-2 assume !!(0 != main_~ytmp~0); 550#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 553#L17-2 assume !(0 != main_~ytmp~0); 556#L16-2 main_~res~0 := 1 + main_~res~0; 554#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 555#L17-2 assume !!(0 != main_~ytmp~0); 558#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 557#L17-2 assume !!(0 != main_~ytmp~0); 548#L17 [2020-10-19 18:42:18,935 INFO L796 eck$LassoCheckResult]: Loop: 548#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 547#L17-2 assume !!(0 != main_~ytmp~0); 548#L17 [2020-10-19 18:42:18,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:18,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1275475969, now seen corresponding path program 2 times [2020-10-19 18:42:18,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:18,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123317025] [2020-10-19 18:42:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:19,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123317025] [2020-10-19 18:42:19,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288479493] [2020-10-19 18:42:19,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:42:19,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:42:19,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:42:19,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:42:19,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:19,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:42:19,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-10-19 18:42:19,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331337287] [2020-10-19 18:42:19,106 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:42:19,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:19,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1662, now seen corresponding path program 3 times [2020-10-19 18:42:19,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:19,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240404416] [2020-10-19 18:42:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:19,111 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:19,113 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:19,114 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:19,130 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:19,130 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:19,130 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:19,130 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:19,130 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:42:19,131 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:19,131 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:19,131 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:19,131 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration6_Loop [2020-10-19 18:42:19,131 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:19,131 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:19,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:19,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:19,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:19,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:19,207 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:19,207 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:19,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:19,218 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:19,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:42:19,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:42:19,303 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:42:19,305 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:19,305 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:19,305 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:19,305 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:19,305 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:42:19,305 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:19,305 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:19,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:19,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration6_Loop [2020-10-19 18:42:19,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:19,306 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:19,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:19,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:19,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:19,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:19,379 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:19,379 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-19 18:42:19,381 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:19,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:19,383 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:19,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:19,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:19,385 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:42:19,385 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:42:19,389 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:19,427 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 [2020-10-19 18:42:19,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:19,428 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:42:19,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:19,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:19,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:19,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:42:19,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:19,433 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:42:19,445 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-19 18:42:19,446 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:19,456 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:42:19,457 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:42:19,457 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:42:19,457 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:19,507 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:42:19,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:19,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:19,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:19,538 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:19,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:19,556 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:42:19,556 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-19 18:42:19,568 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 20 states and 24 transitions. Complement of second has 5 states. [2020-10-19 18:42:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-19 18:42:19,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-19 18:42:19,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:19,569 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:42:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:19,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:19,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:19,596 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:19,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:19,612 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:42:19,612 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-19 18:42:19,629 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 19 states and 23 transitions. Complement of second has 5 states. [2020-10-19 18:42:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:19,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-10-19 18:42:19,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-19 18:42:19,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:19,630 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:42:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:19,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:19,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:19,657 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:19,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:19,673 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:42:19,673 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-19 18:42:19,684 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 19 states and 24 transitions. Complement of second has 6 states. [2020-10-19 18:42:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-10-19 18:42:19,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-19 18:42:19,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:19,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 12 letters. Loop has 2 letters. [2020-10-19 18:42:19,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:19,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 4 letters. [2020-10-19 18:42:19,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:19,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2020-10-19 18:42:19,687 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:42:19,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2020-10-19 18:42:19,687 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:42:19,687 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:42:19,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:42:19,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:42:19,687 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:42:19,687 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:42:19,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:42:19,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:42:19,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:42:19,688 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 10 states. [2020-10-19 18:42:19,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:42:19,688 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-19 18:42:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 18:42:19,689 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-19 18:42:19,689 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:42:19,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:42:19,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:42:19,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:42:19,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:42:19,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:42:19,689 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:42:19,689 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:42:19,690 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:42:19,690 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 18:42:19,690 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:42:19,690 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:42:19,690 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:42:19,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:42:19 BoogieIcfgContainer [2020-10-19 18:42:19,697 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:42:19,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:42:19,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:42:19,698 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:42:19,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:42:15" (3/4) ... [2020-10-19 18:42:19,702 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:42:19,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:42:19,704 INFO L168 Benchmark]: Toolchain (without parser) took 4973.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.5 MB). Free memory was 960.0 MB in the beginning and 1.0 GB in the end (delta: -53.4 MB). Peak memory consumption was 152.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:19,705 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:42:19,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.88 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:19,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -174.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:19,707 INFO L168 Benchmark]: Boogie Preprocessor took 21.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:19,708 INFO L168 Benchmark]: RCFGBuilder took 208.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:19,709 INFO L168 Benchmark]: BuchiAutomizer took 4370.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.4 MB). Peak memory consumption was 170.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:19,709 INFO L168 Benchmark]: Witness Printer took 4.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:42:19,713 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 268.88 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 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 89.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -174.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4370.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.4 MB). Peak memory consumption was 170.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 9 terminating modules (4 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function ytmp and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 3.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 28 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 62 SDtfs, 53 SDslu, 23 SDs, 0 SdLazy, 76 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf100 lsp46 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf93 smp87 dnf100 smp100 tf110 neg97 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...