./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 0.1.25-9a8b2e8 [2020-10-20 06:35:14,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:35:14,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:35:14,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:35:14,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:35:14,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:35:14,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:35:14,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:35:14,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:35:14,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:35:14,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:35:14,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:35:14,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:35:14,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:35:14,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:35:14,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:35:14,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:35:14,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:35:14,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:35:14,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:35:14,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:35:14,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:35:14,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:35:14,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:35:14,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:35:14,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:35:14,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:35:14,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:35:14,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:35:14,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:35:14,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:35:14,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:35:14,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:35:14,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:35:14,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:35:14,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:35:14,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:35:14,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:35:14,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:35:14,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:35:14,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:35:14,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:35:14,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:35:14,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:35:14,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:35:14,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:35:14,880 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:35:14,880 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:35:14,880 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:35:14,881 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:35:14,881 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:35:14,881 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:35:14,881 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:35:14,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:35:14,881 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:35:14,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:35:14,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:35:14,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:35:14,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:35:14,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:35:14,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:35:14,883 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:35:14,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:35:14,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:35:14,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:35:14,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:35:14,884 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:35:14,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:35:14,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:35:14,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:35:14,885 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:35:14,886 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:35:14,886 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 [2020-10-20 06:35:15,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:35:15,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:35:15,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:35:15,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:35:15,110 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:35:15,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2020-10-20 06:35:15,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32aa8cf8/785507abacba47819f099c8a1a3ff3a5/FLAGf82e1320f [2020-10-20 06:35:15,573 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:35:15,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2020-10-20 06:35:15,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32aa8cf8/785507abacba47819f099c8a1a3ff3a5/FLAGf82e1320f [2020-10-20 06:35:15,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32aa8cf8/785507abacba47819f099c8a1a3ff3a5 [2020-10-20 06:35:15,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:35:15,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:35:15,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:15,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:35:15,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:35:15,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:15" (1/1) ... [2020-10-20 06:35:15,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d423442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:15, skipping insertion in model container [2020-10-20 06:35:15,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:15" (1/1) ... [2020-10-20 06:35:15,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:35:15,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:35:16,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:16,205 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:35:16,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:16,235 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:35:16,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16 WrapperNode [2020-10-20 06:35:16,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:16,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:16,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:35:16,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:35:16,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:16,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:35:16,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:35:16,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:35:16,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (1/1) ... [2020-10-20 06:35:16,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:35:16,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:35:16,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:35:16,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:35:16,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (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 [2020-10-20 06:35:16,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:35:16,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:35:16,569 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:35:16,569 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:35:16,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:16 BoogieIcfgContainer [2020-10-20 06:35:16,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:35:16,573 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:35:16,573 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:35:16,578 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:35:16,579 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:16,580 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:35:15" (1/3) ... [2020-10-20 06:35:16,582 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ce8a429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:16, skipping insertion in model container [2020-10-20 06:35:16,582 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:16,582 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:16" (2/3) ... [2020-10-20 06:35:16,583 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ce8a429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:16, skipping insertion in model container [2020-10-20 06:35:16,583 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:16,583 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:16" (3/3) ... [2020-10-20 06:35:16,585 INFO L373 chiAutomizerObserver]: Analyzing ICFG DivMinus2.c [2020-10-20 06:35:16,662 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:35:16,662 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:35:16,663 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:35:16,663 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:35:16,663 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:35:16,663 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:35:16,664 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:35:16,664 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:35:16,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-20 06:35:16,703 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:35:16,703 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:16,703 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:16,709 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:16,709 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:35:16,709 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:35:16,709 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-10-20 06:35:16,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:35:16,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:16,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:16,711 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:16,711 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:35:16,717 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 7#L14-2true [2020-10-20 06:35:16,718 INFO L796 eck$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 [2020-10-20 06:35:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:35:16,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:16,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327907984] [2020-10-20 06:35:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:16,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:16,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:16,831 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:16,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:16,833 INFO L82 PathProgramCache]: Analyzing trace with hash 39957, now seen corresponding path program 1 times [2020-10-20 06:35:16,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:16,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334070594] [2020-10-20 06:35:16,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:16,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334070594] [2020-10-20 06:35:16,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:35:16,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:35:16,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728138893] [2020-10-20 06:35:16,928 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 06:35:16,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:16,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:35:16,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:35:16,948 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-10-20 06:35:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:16,981 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2020-10-20 06:35:16,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:35:16,985 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2020-10-20 06:35:16,986 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:35:16,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 8 transitions. [2020-10-20 06:35:16,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-20 06:35:16,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-20 06:35:16,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 8 transitions. [2020-10-20 06:35:16,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:35:16,993 INFO L691 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-20 06:35:17,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 8 transitions. [2020-10-20 06:35:17,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-10-20 06:35:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:35:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-10-20 06:35:17,029 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-20 06:35:17,030 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-20 06:35:17,030 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:35:17,030 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-10-20 06:35:17,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:35:17,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:17,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:17,032 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:17,032 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-10-20 06:35:17,033 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 [2020-10-20 06:35:17,033 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 [2020-10-20 06:35:17,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:17,034 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-10-20 06:35:17,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:17,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549383038] [2020-10-20 06:35:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,049 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,062 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:17,066 INFO L82 PathProgramCache]: Analyzing trace with hash 38452088, now seen corresponding path program 1 times [2020-10-20 06:35:17,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:17,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91398330] [2020-10-20 06:35:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,098 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,112 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:17,112 INFO L82 PathProgramCache]: Analyzing trace with hash 925955769, now seen corresponding path program 1 times [2020-10-20 06:35:17,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:17,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552503518] [2020-10-20 06:35:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,142 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:17,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:17,158 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:17,257 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:17,262 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:17,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:17,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:17,263 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:17,264 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,264 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:17,265 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:17,265 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2020-10-20 06:35:17,265 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:17,266 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:17,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,481 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:17,482 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) [2020-10-20 06:35:17,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:17,493 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:17,503 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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:17,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:17,534 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:17,535 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 [2020-10-20 06:35:17,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:17,558 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 [2020-10-20 06:35:17,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:17,609 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:17,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:17,630 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 [2020-10-20 06:35:17,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:17,666 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) [2020-10-20 06:35:17,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:17,711 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,943 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:17,945 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:17,945 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:17,945 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:17,945 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:17,946 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:17,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:17,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:17,946 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:17,946 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2020-10-20 06:35:17,946 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:17,946 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:17,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:17,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:18,050 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:18,057 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,063 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 [2020-10-20 06:35:18,066 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:18,066 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:18,066 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:18,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:18,072 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:18,073 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:18,078 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 [2020-10-20 06:35:18,103 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 [2020-10-20 06:35:18,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:18,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:18,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:18,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:18,112 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:18,112 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:18,119 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 [2020-10-20 06:35:18,148 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 [2020-10-20 06:35:18,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:18,151 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:18,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:18,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:18,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:18,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:18,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:18,158 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:18,172 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 06:35:18,172 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) [2020-10-20 06:35:18,179 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:18,179 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,180 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:18,180 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-20 06:35:18,217 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:18,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:18,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:18,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:18,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:18,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:18,326 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 [2020-10-20 06:35:18,326 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-10-20 06:35:18,374 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. [2020-10-20 06:35:18,375 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 [2020-10-20 06:35:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:35:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:35:18,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 5 letters. [2020-10-20 06:35:18,379 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:18,380 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 5 letters. [2020-10-20 06:35:18,380 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:18,380 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 10 letters. [2020-10-20 06:35:18,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:18,381 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 33 transitions. [2020-10-20 06:35:18,384 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-20 06:35:18,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 33 transitions. [2020-10-20 06:35:18,386 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-20 06:35:18,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-10-20 06:35:18,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 33 transitions. [2020-10-20 06:35:18,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:18,387 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 33 transitions. [2020-10-20 06:35:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 33 transitions. [2020-10-20 06:35:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-10-20 06:35:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 06:35:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2020-10-20 06:35:18,392 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2020-10-20 06:35:18,392 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2020-10-20 06:35:18,392 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:35:18,392 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 29 transitions. [2020-10-20 06:35:18,393 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-20 06:35:18,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:18,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:18,394 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:35:18,394 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:18,395 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 [2020-10-20 06:35:18,395 INFO L796 eck$LassoCheckResult]: Loop: 107#L17-2 assume !!(0 != main_~ytmp~0); 101#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 107#L17-2 [2020-10-20 06:35:18,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:18,395 INFO L82 PathProgramCache]: Analyzing trace with hash 963535, now seen corresponding path program 1 times [2020-10-20 06:35:18,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:18,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667222216] [2020-10-20 06:35:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:18,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667222216] [2020-10-20 06:35:18,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:35:18,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:35:18,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576154891] [2020-10-20 06:35:18,421 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:35:18,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:18,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1572, now seen corresponding path program 1 times [2020-10-20 06:35:18,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:18,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600566537] [2020-10-20 06:35:18,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:18,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:18,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:18,431 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:18,455 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:18,456 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:18,456 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:18,456 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:18,456 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:18,456 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,456 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:18,456 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:18,456 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2020-10-20 06:35:18,457 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:18,457 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:18,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:18,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:18,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:18,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:18,557 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:18,557 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) [2020-10-20 06:35:18,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:18,566 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,571 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:18,571 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) [2020-10-20 06:35:18,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:18,619 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 [2020-10-20 06:35:18,624 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:18,624 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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:18,680 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) [2020-10-20 06:35:18,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:18,730 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 [2020-10-20 06:35:18,774 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:18,776 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:18,776 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:18,776 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:18,776 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:18,776 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:18,777 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,777 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:18,777 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:18,777 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2020-10-20 06:35:18,777 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:18,777 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:18,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:18,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:18,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:18,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:18,850 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:18,850 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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,858 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 [2020-10-20 06:35:18,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:18,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:18,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:18,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:18,863 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:18,863 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:18,867 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 [2020-10-20 06:35:18,895 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 [2020-10-20 06:35:18,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:18,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:18,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:18,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:18,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:18,899 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:18,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:18,903 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:18,905 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:35:18,905 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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:18,912 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:18,912 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:18,912 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:18,912 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2020-10-20 06:35:18,933 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:18,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:18,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:18,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:18,969 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:18,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:18,971 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 [2020-10-20 06:35:18,971 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 12 Second operand 3 states. [2020-10-20 06:35:18,996 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. [2020-10-20 06:35:18,996 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 [2020-10-20 06:35:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-10-20 06:35:18,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:35:18,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:18,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 06:35:18,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:18,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 4 letters. Loop has 4 letters. [2020-10-20 06:35:18,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:18,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 42 transitions. [2020-10-20 06:35:19,001 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-20 06:35:19,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 39 transitions. [2020-10-20 06:35:19,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-10-20 06:35:19,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-20 06:35:19,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 39 transitions. [2020-10-20 06:35:19,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:19,004 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 39 transitions. [2020-10-20 06:35:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 39 transitions. [2020-10-20 06:35:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-20 06:35:19,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 06:35:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2020-10-20 06:35:19,008 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 37 transitions. [2020-10-20 06:35:19,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:19,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:35:19,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:35:19,009 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 3 states. [2020-10-20 06:35:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:19,021 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2020-10-20 06:35:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:35:19,022 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 37 transitions. [2020-10-20 06:35:19,023 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 06:35:19,024 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 21 states and 31 transitions. [2020-10-20 06:35:19,024 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-10-20 06:35:19,024 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-20 06:35:19,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 31 transitions. [2020-10-20 06:35:19,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:19,025 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-20 06:35:19,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 31 transitions. [2020-10-20 06:35:19,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-20 06:35:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:35:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2020-10-20 06:35:19,027 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-20 06:35:19,028 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-20 06:35:19,028 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:35:19,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 31 transitions. [2020-10-20 06:35:19,029 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 06:35:19,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:19,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:19,029 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-10-20 06:35:19,029 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:19,029 INFO L794 eck$LassoCheckResult]: Stem: 238#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 239#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 236#L17-2 assume !!(0 != main_~ytmp~0); 237#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 254#L17-2 assume !!(0 != main_~ytmp~0); 240#L17 [2020-10-20 06:35:19,030 INFO L796 eck$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 [2020-10-20 06:35:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:19,030 INFO L82 PathProgramCache]: Analyzing trace with hash 29869542, now seen corresponding path program 1 times [2020-10-20 06:35:19,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:19,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115900503] [2020-10-20 06:35:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:19,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:19,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:19,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:19,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:19,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1662, now seen corresponding path program 2 times [2020-10-20 06:35:19,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:19,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327905073] [2020-10-20 06:35:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:19,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:19,055 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:19,056 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:19,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:19,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1360140509, now seen corresponding path program 2 times [2020-10-20 06:35:19,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:19,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36993951] [2020-10-20 06:35:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:19,067 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:19,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:19,077 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:19,096 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:19,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:19,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:19,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:19,097 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:19,097 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:19,097 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:19,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:19,097 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2020-10-20 06:35:19,097 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:19,097 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:19,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,237 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:19,237 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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:19,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:19,243 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:19,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:19,301 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 [2020-10-20 06:35:19,403 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:19,406 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:19,406 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:19,406 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:19,406 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:19,406 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:19,406 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:19,406 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:19,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:19,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2020-10-20 06:35:19,407 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:19,407 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:19,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,504 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:19,505 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) [2020-10-20 06:35:19,526 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 [2020-10-20 06:35:19,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:19,528 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:19,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:19,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:19,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:19,533 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:19,534 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:19,536 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:19,540 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:19,540 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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:19,543 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:19,543 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:19,544 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:19,544 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2020-10-20 06:35:19,569 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:19,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:19,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:19,596 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:19,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:19,615 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 [2020-10-20 06:35:19,615 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 31 transitions. cyclomatic complexity: 14 Second operand 3 states. [2020-10-20 06:35:19,639 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. [2020-10-20 06:35:19,639 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 [2020-10-20 06:35:19,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-20 06:35:19,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:35:19,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:19,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-20 06:35:19,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:19,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 06:35:19,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:19,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 53 transitions. [2020-10-20 06:35:19,643 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 06:35:19,644 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 33 states and 48 transitions. [2020-10-20 06:35:19,644 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-10-20 06:35:19,644 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-10-20 06:35:19,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 48 transitions. [2020-10-20 06:35:19,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:19,645 INFO L691 BuchiCegarLoop]: Abstraction has 33 states and 48 transitions. [2020-10-20 06:35:19,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 48 transitions. [2020-10-20 06:35:19,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-10-20 06:35:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 06:35:19,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-10-20 06:35:19,650 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-10-20 06:35:19,650 INFO L594 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-10-20 06:35:19,651 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:35:19,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 42 transitions. [2020-10-20 06:35:19,653 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 06:35:19,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:19,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:19,654 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2020-10-20 06:35:19,654 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-10-20 06:35:19,654 INFO L794 eck$LassoCheckResult]: Stem: 338#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 339#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 343#L17-2 assume !!(0 != main_~ytmp~0); 358#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 357#L17-2 assume !!(0 != main_~ytmp~0); 337#L17 assume !(main_~ytmp~0 > 0);main_~ytmp~0 := 1 + main_~ytmp~0;main_~x~0 := 1 + main_~x~0; 354#L17-2 assume !(0 != main_~ytmp~0); 346#L16-2 [2020-10-20 06:35:19,654 INFO L796 eck$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 [2020-10-20 06:35:19,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:19,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1360140449, now seen corresponding path program 1 times [2020-10-20 06:35:19,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:19,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500724245] [2020-10-20 06:35:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:19,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500724245] [2020-10-20 06:35:19,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:35:19,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:35:19,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877785352] [2020-10-20 06:35:19,728 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:35:19,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:19,728 INFO L82 PathProgramCache]: Analyzing trace with hash 55728128, now seen corresponding path program 2 times [2020-10-20 06:35:19,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:19,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129405854] [2020-10-20 06:35:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:19,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:19,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:19,742 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:19,785 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:19,785 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:19,785 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:19,785 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:19,785 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:19,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:19,786 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:19,786 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:19,786 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2020-10-20 06:35:19,786 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:19,786 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:19,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:19,875 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:19,875 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) [2020-10-20 06:35:19,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:19,879 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 [2020-10-20 06:35:19,884 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:19,885 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) [2020-10-20 06:35:19,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:19,919 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 [2020-10-20 06:35:19,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:19,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:20,166 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:20,169 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:20,170 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:20,170 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:20,170 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:20,170 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:20,170 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:20,170 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:20,170 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:20,170 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2020-10-20 06:35:20,170 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:20,170 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:20,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,253 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:20,253 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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:20,264 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 [2020-10-20 06:35:20,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:20,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:20,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:20,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:20,266 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:20,269 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:20,269 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:20,272 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:20,280 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 06:35:20,280 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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:20,282 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:20,282 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:20,282 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:20,282 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-20 06:35:20,303 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:20,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:20,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:20,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:20,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:20,386 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 [2020-10-20 06:35:20,387 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-10-20 06:35:20,416 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. [2020-10-20 06:35:20,416 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 [2020-10-20 06:35:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:35:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-20 06:35:20,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 7 letters. Loop has 5 letters. [2020-10-20 06:35:20,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:20,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 5 letters. [2020-10-20 06:35:20,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:20,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 7 letters. Loop has 10 letters. [2020-10-20 06:35:20,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:20,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 95 transitions. [2020-10-20 06:35:20,432 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-20 06:35:20,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 48 states and 74 transitions. [2020-10-20 06:35:20,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-10-20 06:35:20,436 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2020-10-20 06:35:20,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2020-10-20 06:35:20,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:20,436 INFO L691 BuchiCegarLoop]: Abstraction has 48 states and 74 transitions. [2020-10-20 06:35:20,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2020-10-20 06:35:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-20 06:35:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-20 06:35:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 68 transitions. [2020-10-20 06:35:20,444 INFO L714 BuchiCegarLoop]: Abstraction has 44 states and 68 transitions. [2020-10-20 06:35:20,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:20,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:35:20,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:35:20,445 INFO L87 Difference]: Start difference. First operand 44 states and 68 transitions. Second operand 4 states. [2020-10-20 06:35:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:20,481 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2020-10-20 06:35:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:35:20,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-10-20 06:35:20,484 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:20,485 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 18 transitions. [2020-10-20 06:35:20,485 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:35:20,485 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-10-20 06:35:20,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2020-10-20 06:35:20,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:20,485 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2020-10-20 06:35:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2020-10-20 06:35:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-10-20 06:35:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 06:35:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-10-20 06:35:20,488 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-10-20 06:35:20,488 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-10-20 06:35:20,488 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:35:20,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2020-10-20 06:35:20,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:20,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:20,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:20,489 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1] [2020-10-20 06:35:20,490 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:20,490 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 [2020-10-20 06:35:20,490 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 [2020-10-20 06:35:20,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:20,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1275475969, now seen corresponding path program 2 times [2020-10-20 06:35:20,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:20,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230215492] [2020-10-20 06:35:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:20,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230215492] [2020-10-20 06:35:20,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880127258] [2020-10-20 06:35:20,564 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) [2020-10-20 06:35:20,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:35:20,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:35:20,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:35:20,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:35:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:20,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:35:20,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-10-20 06:35:20,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921793456] [2020-10-20 06:35:20,642 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:35:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:20,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1662, now seen corresponding path program 3 times [2020-10-20 06:35:20,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:20,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634179856] [2020-10-20 06:35:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:20,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:20,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:20,651 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:20,667 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:20,667 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:20,667 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:20,667 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:20,667 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:20,668 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:20,668 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:20,668 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:20,668 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration6_Loop [2020-10-20 06:35:20,668 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:20,668 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:20,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,745 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:20,746 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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:20,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:20,750 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-20 06:35:20,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:20,787 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:20,846 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:20,848 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:20,848 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:20,848 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:20,848 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:20,848 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:20,848 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:20,848 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:20,849 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:20,849 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration6_Loop [2020-10-20 06:35:20,849 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:20,849 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:20,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:20,912 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:20,912 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) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:20,915 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 [2020-10-20 06:35:20,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:20,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:20,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:20,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:20,921 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:20,921 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:20,926 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) [2020-10-20 06:35:20,975 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 [2020-10-20 06:35:20,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:20,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:20,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:20,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:20,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:20,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:20,980 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 [2020-10-20 06:35:20,983 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:20,986 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:35:20,986 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) [2020-10-20 06:35:20,996 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:20,996 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:20,996 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:20,996 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 [2020-10-20 06:35:21,047 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:21,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:21,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:21,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:21,078 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:21,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:21,094 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 [2020-10-20 06:35:21,094 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 06:35:21,107 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. [2020-10-20 06:35:21,108 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 [2020-10-20 06:35:21,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-20 06:35:21,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-20 06:35:21,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:21,109 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:21,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:21,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:21,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:21,176 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:21,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:21,191 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 [2020-10-20 06:35:21,191 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 06:35:21,207 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. [2020-10-20 06:35:21,207 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 [2020-10-20 06:35:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-10-20 06:35:21,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-20 06:35:21,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:21,208 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:21,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:21,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:21,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:21,232 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:21,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:21,254 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 [2020-10-20 06:35:21,254 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 06:35:21,269 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. [2020-10-20 06:35:21,271 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 [2020-10-20 06:35:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-10-20 06:35:21,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-20 06:35:21,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:21,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 12 letters. Loop has 2 letters. [2020-10-20 06:35:21,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:21,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 4 letters. [2020-10-20 06:35:21,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:21,273 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2020-10-20 06:35:21,274 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:21,274 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2020-10-20 06:35:21,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:35:21,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:35:21,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:35:21,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:35:21,274 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:21,274 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:21,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:21,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:35:21,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:35:21,277 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 10 states. [2020-10-20 06:35:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:21,277 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 06:35:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:35:21,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 06:35:21,277 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:21,277 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:35:21,278 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:35:21,278 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:35:21,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:35:21,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:35:21,278 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:21,278 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:21,278 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:21,278 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 06:35:21,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:35:21,278 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:21,278 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:35:21,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:35:21 BoogieIcfgContainer [2020-10-20 06:35:21,284 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:35:21,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:35:21,285 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:35:21,285 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:35:21,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:16" (3/4) ... [2020-10-20 06:35:21,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:35:21,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:35:21,293 INFO L168 Benchmark]: Toolchain (without parser) took 5357.95 ms. Allocated memory was 35.1 MB in the beginning and 59.8 MB in the end (delta: 24.6 MB). Free memory was 12.6 MB in the beginning and 22.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 14.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:21,294 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 33.6 MB. Free memory was 18.7 MB in the beginning and 18.6 MB in the end (delta: 40.4 kB). Peak memory consumption was 40.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:21,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.26 ms. Allocated memory was 35.1 MB in the beginning and 43.0 MB in the end (delta: 7.9 MB). Free memory was 11.8 MB in the beginning and 27.6 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:21,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.72 ms. Allocated memory is still 43.0 MB. Free memory was 27.6 MB in the beginning and 26.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:21,296 INFO L168 Benchmark]: Boogie Preprocessor took 20.03 ms. Allocated memory is still 43.0 MB. Free memory was 26.1 MB in the beginning and 24.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:21,297 INFO L168 Benchmark]: RCFGBuilder took 284.86 ms. Allocated memory is still 43.0 MB. Free memory was 24.9 MB in the beginning and 15.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:21,298 INFO L168 Benchmark]: BuchiAutomizer took 4711.10 ms. Allocated memory was 43.0 MB in the beginning and 59.8 MB in the end (delta: 16.8 MB). Free memory was 15.4 MB in the beginning and 23.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:21,299 INFO L168 Benchmark]: Witness Printer took 5.41 ms. Allocated memory is still 59.8 MB. Free memory was 23.2 MB in the beginning and 22.5 MB in the end (delta: 654.9 kB). Peak memory consumption was 654.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:21,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 33.6 MB. Free memory was 18.7 MB in the beginning and 18.6 MB in the end (delta: 40.4 kB). Peak memory consumption was 40.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 296.26 ms. Allocated memory was 35.1 MB in the beginning and 43.0 MB in the end (delta: 7.9 MB). Free memory was 11.8 MB in the beginning and 27.6 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 30.72 ms. Allocated memory is still 43.0 MB. Free memory was 27.6 MB in the beginning and 26.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 20.03 ms. Allocated memory is still 43.0 MB. Free memory was 26.1 MB in the beginning and 24.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 284.86 ms. Allocated memory is still 43.0 MB. Free memory was 24.9 MB in the beginning and 15.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 4711.10 ms. Allocated memory was 43.0 MB in the beginning and 59.8 MB in the end (delta: 16.8 MB). Free memory was 15.4 MB in the beginning and 23.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. * Witness Printer took 5.41 ms. Allocated memory is still 59.8 MB. Free memory was 23.2 MB in the beginning and 22.5 MB in the end (delta: 654.9 kB). Peak memory consumption was 654.9 kB. Max. memory is 14.3 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 4.6s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. 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: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...