./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.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 e334a37fa3ef1f2b757af8cdc97575f5cde09f8b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:14:48,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:14:48,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:14:48,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:14:48,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:14:48,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:14:48,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:14:48,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:14:48,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:14:48,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:14:48,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:14:48,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:14:48,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:14:48,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:14:48,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:14:48,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:14:48,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:14:48,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:14:48,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:14:48,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:14:48,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:14:48,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:14:48,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:14:48,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:14:48,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:14:48,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:14:48,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:14:48,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:14:48,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:14:48,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:14:48,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:14:48,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:14:48,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:14:48,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:14:48,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:14:48,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:14:48,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:14:48,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:14:48,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:14:48,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:14:48,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:14:48,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:14:48,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:14:48,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:14:48,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:14:48,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:14:48,715 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:14:48,715 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:14:48,715 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:14:48,715 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:14:48,716 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:14:48,716 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:14:48,717 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:14:48,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:14:48,718 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:14:48,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:14:48,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:14:48,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:14:48,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:14:48,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:14:48,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:14:48,720 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:14:48,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:14:48,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:14:48,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:14:48,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:14:48,722 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:14:48,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:14:48,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:14:48,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:14:48,724 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:14:48,726 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:14:48,726 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e334a37fa3ef1f2b757af8cdc97575f5cde09f8b [2020-10-26 04:14:49,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:14:49,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:14:49,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:14:49,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:14:49,226 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:14:49,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2020-10-26 04:14:49,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95cb5b3c7/59624b9d86154935be5dc77fcdc4afd2/FLAG27506f8b4 [2020-10-26 04:14:49,980 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:14:49,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2020-10-26 04:14:49,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95cb5b3c7/59624b9d86154935be5dc77fcdc4afd2/FLAG27506f8b4 [2020-10-26 04:14:50,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95cb5b3c7/59624b9d86154935be5dc77fcdc4afd2 [2020-10-26 04:14:50,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:14:50,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:14:50,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:14:50,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:14:50,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:14:50,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e26f1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50, skipping insertion in model container [2020-10-26 04:14:50,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:14:50,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:14:50,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:14:50,600 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:14:50,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:14:50,633 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:14:50,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50 WrapperNode [2020-10-26 04:14:50,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:14:50,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:14:50,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:14:50,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:14:50,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:14:50,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:14:50,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:14:50,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:14:50,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (1/1) ... [2020-10-26 04:14:50,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:14:50,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:14:50,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:14:50,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:14:50,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (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 [2020-10-26 04:14:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:14:50,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:14:51,021 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:14:51,021 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 04:14:51,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:14:51 BoogieIcfgContainer [2020-10-26 04:14:51,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:14:51,025 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:14:51,026 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:14:51,030 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:14:51,031 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:14:51,032 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:14:50" (1/3) ... [2020-10-26 04:14:51,033 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bce02e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:14:51, skipping insertion in model container [2020-10-26 04:14:51,033 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:14:51,034 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:14:50" (2/3) ... [2020-10-26 04:14:51,034 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bce02e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:14:51, skipping insertion in model container [2020-10-26 04:14:51,034 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:14:51,035 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:14:51" (3/3) ... [2020-10-26 04:14:51,037 INFO L373 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2020-10-26 04:14:51,145 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:14:51,146 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:14:51,146 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:14:51,146 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:14:51,149 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:14:51,149 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:14:51,150 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:14:51,150 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:14:51,187 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-10-26 04:14:51,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 04:14:51,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:51,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:51,242 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:14:51,243 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:14:51,243 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:14:51,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-10-26 04:14:51,246 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 04:14:51,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:51,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:51,247 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:14:51,247 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:14:51,259 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 5#L18-2true [2020-10-26 04:14:51,260 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 11#L19true assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 7#L19-2true main_~y~0 := main_~y~0 - 1; 5#L18-2true [2020-10-26 04:14:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:51,276 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-26 04:14:51,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:51,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60051238] [2020-10-26 04:14:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:51,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:51,400 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:51,418 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash 40299, now seen corresponding path program 1 times [2020-10-26 04:14:51,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:51,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15254782] [2020-10-26 04:14:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:51,436 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:51,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:51,443 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:51,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:51,446 INFO L82 PathProgramCache]: Analyzing trace with hash 963820, now seen corresponding path program 1 times [2020-10-26 04:14:51,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:51,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600803584] [2020-10-26 04:14:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:51,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:51,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:51,470 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:51,627 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:51,628 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:51,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:51,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:51,629 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:14:51,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:51,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:51,630 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:51,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2020-10-26 04:14:51,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:51,630 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:51,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:51,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:51,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:51,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:51,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:51,888 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:51,889 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:51,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:51,900 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:14:51,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:51,914 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:51,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:51,960 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:51,968 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:51,968 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 [2020-10-26 04:14:52,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:52,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:14:52,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:52,024 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:52,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:52,083 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:52,092 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:52,093 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:52,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:52,145 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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) [2020-10-26 04:14:52,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:14:52,201 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 [2020-10-26 04:14:52,252 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:14:52,255 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:52,256 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:52,256 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:52,256 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:52,256 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:14:52,257 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:52,257 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:52,258 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:52,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2020-10-26 04:14:52,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:52,259 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:52,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:52,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:52,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:52,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:52,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:52,451 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:52,458 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 [2020-10-26 04:14:52,465 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 [2020-10-26 04:14:52,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:52,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:52,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:52,469 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:52,481 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:14:52,481 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:14:52,493 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) [2020-10-26 04:14:52,542 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 [2020-10-26 04:14:52,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:52,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:52,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:52,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:52,555 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:14:52,555 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:52,568 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) [2020-10-26 04:14:52,613 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 [2020-10-26 04:14:52,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:52,616 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:52,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:52,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:52,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:52,618 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:14:52,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:52,621 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:52,662 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 [2020-10-26 04:14:52,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:52,667 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:52,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:52,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:52,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:52,672 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:14:52,672 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:52,678 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:52,717 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 [2020-10-26 04:14:52,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:52,719 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:52,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:52,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:52,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:52,722 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:14:52,723 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:14:52,728 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:14:52,733 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:14:52,733 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:52,743 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:14:52,743 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:14:52,743 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:14:52,744 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:52,779 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:14:52,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:52,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:52,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:52,835 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:52,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:52,882 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 [2020-10-26 04:14:52,884 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2020-10-26 04:14:52,962 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 37 states and 54 transitions. Complement of second has 8 states. [2020-10-26 04:14:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:14:52,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:14:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2020-10-26 04:14:52,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 3 letters. [2020-10-26 04:14:52,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:52,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-26 04:14:52,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:52,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 6 letters. [2020-10-26 04:14:52,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:52,972 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 54 transitions. [2020-10-26 04:14:52,976 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 04:14:52,981 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 14 states and 20 transitions. [2020-10-26 04:14:52,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-26 04:14:52,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-10-26 04:14:52,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2020-10-26 04:14:52,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:14:52,985 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2020-10-26 04:14:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2020-10-26 04:14:53,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-26 04:14:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-26 04:14:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2020-10-26 04:14:53,019 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2020-10-26 04:14:53,019 INFO L594 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2020-10-26 04:14:53,019 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:14:53,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2020-10-26 04:14:53,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 04:14:53,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:53,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:53,022 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:14:53,022 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:14:53,022 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 93#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 91#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 98#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2020-10-26 04:14:53,023 INFO L796 eck$LassoCheckResult]: Loop: 99#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2020-10-26 04:14:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:53,023 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2020-10-26 04:14:53,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:53,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159284100] [2020-10-26 04:14:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,033 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,042 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:53,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:53,044 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-10-26 04:14:53,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:53,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720197486] [2020-10-26 04:14:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,056 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:53,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:53,057 INFO L82 PathProgramCache]: Analyzing trace with hash 29863779, now seen corresponding path program 2 times [2020-10-26 04:14:53,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:53,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040441393] [2020-10-26 04:14:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,067 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,080 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:53,097 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:53,098 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:53,098 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:53,098 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:53,098 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:14:53,098 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:53,098 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:53,098 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:53,098 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2020-10-26 04:14:53,099 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:53,099 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:53,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:53,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:53,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:53,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:53,184 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:53,184 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:53,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:53,191 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:53,196 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:53,196 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:53,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:53,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:14:53,243 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:53,243 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 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 [2020-10-26 04:14:53,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:53,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:14:53,281 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:53,281 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-5} Honda state: {ULTIMATE.start_main_#t~nondet2=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-10-26 04:14:53,307 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:53,307 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:53,343 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:14:53,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:14:53,496 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:14:53,498 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:53,498 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:53,499 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:53,499 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:53,499 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:14:53,499 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:53,499 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:53,499 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:53,499 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2020-10-26 04:14:53,499 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:53,499 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:53,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:53,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:53,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:53,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:53,570 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:53,571 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:53,597 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 [2020-10-26 04:14:53,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:53,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:53,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:53,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:53,602 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:14:53,602 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:53,609 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:53,648 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:53,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:53,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:53,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:53,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:53,655 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:14:53,655 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:14:53,669 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:53,697 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 [2020-10-26 04:14:53,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:53,700 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:53,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:53,700 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 04:14:53,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:53,702 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-26 04:14:53,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:14:53,707 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:53,735 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:53,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:53,739 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:53,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:53,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:53,739 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:53,740 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:14:53,740 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:14:53,749 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:14:53,757 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:14:53,757 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:53,760 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:14:53,761 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:14:53,761 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:14:53,761 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-10-26 04:14:53,782 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:14:53,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:53,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:53,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:53,815 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:53,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:53,817 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 [2020-10-26 04:14:53,817 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 2 states. [2020-10-26 04:14:53,835 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 25 states and 39 transitions. Complement of second has 6 states. [2020-10-26 04:14:53,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:14:53,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-26 04:14:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-10-26 04:14:53,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2020-10-26 04:14:53,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:53,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 1 letters. [2020-10-26 04:14:53,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:53,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-26 04:14:53,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:53,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 39 transitions. [2020-10-26 04:14:53,842 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 04:14:53,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2020-10-26 04:14:53,843 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-26 04:14:53,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-26 04:14:53,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2020-10-26 04:14:53,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:14:53,844 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-10-26 04:14:53,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2020-10-26 04:14:53,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-10-26 04:14:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-26 04:14:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2020-10-26 04:14:53,848 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2020-10-26 04:14:53,848 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2020-10-26 04:14:53,848 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:14:53,848 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2020-10-26 04:14:53,849 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 04:14:53,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:53,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:53,852 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-26 04:14:53,852 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-10-26 04:14:53,852 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 163#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 168#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 177#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 176#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2020-10-26 04:14:53,853 INFO L796 eck$LassoCheckResult]: Loop: 169#L20-3 main_~x~0 := main_~x~0 - 1; 170#L19-2 main_~y~0 := main_~y~0 - 1; 164#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 165#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 173#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2020-10-26 04:14:53,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:53,854 INFO L82 PathProgramCache]: Analyzing trace with hash 29863777, now seen corresponding path program 1 times [2020-10-26 04:14:53,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:53,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185393028] [2020-10-26 04:14:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,863 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,873 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:53,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:53,874 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 1 times [2020-10-26 04:14:53,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:53,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449666536] [2020-10-26 04:14:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,889 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:53,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:53,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267692, now seen corresponding path program 1 times [2020-10-26 04:14:53,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:53,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586693471] [2020-10-26 04:14:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:53,915 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:53,917 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:54,120 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-10-26 04:14:54,152 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:54,153 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:54,153 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:54,153 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:54,153 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:14:54,153 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:54,153 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:54,153 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:54,153 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2020-10-26 04:14:54,154 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:54,154 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:54,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:54,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:54,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:54,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:54,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:54,312 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:54,313 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-26 04:14:54,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:54,317 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) [2020-10-26 04:14:54,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:14:54,362 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:54,505 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:14:54,508 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:54,508 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:54,508 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:54,508 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:54,508 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:14:54,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:54,509 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:54,509 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:54,509 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2020-10-26 04:14:54,509 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:54,509 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:54,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:54,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:54,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:54,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:54,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:54,656 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:54,657 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 [2020-10-26 04:14:54,660 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 [2020-10-26 04:14:54,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:54,668 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:54,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:54,668 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 04:14:54,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:54,674 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-26 04:14:54,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:14:54,679 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:14:54,694 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:14:54,694 INFO L444 ModelExtractionUtils]: 2 out of 5 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:54,698 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:14:54,698 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:14:54,698 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:14:54,698 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:54,732 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:14:54,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:54,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:54,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:54,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:54,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:54,866 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 [2020-10-26 04:14:54,866 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 Second operand 5 states. [2020-10-26 04:14:54,899 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 46 states and 68 transitions. Complement of second has 8 states. [2020-10-26 04:14:54,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:14:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 04:14:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2020-10-26 04:14:54,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 5 letters. [2020-10-26 04:14:54,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:54,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 5 letters. [2020-10-26 04:14:54,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:54,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 10 letters. [2020-10-26 04:14:54,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:54,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2020-10-26 04:14:54,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 04:14:54,907 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 32 states and 46 transitions. [2020-10-26 04:14:54,907 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-26 04:14:54,907 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-10-26 04:14:54,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 46 transitions. [2020-10-26 04:14:54,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:14:54,908 INFO L691 BuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2020-10-26 04:14:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 46 transitions. [2020-10-26 04:14:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-26 04:14:54,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-26 04:14:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-26 04:14:54,916 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-26 04:14:54,916 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-26 04:14:54,916 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:14:54,916 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2020-10-26 04:14:54,920 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 04:14:54,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:54,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:54,924 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2020-10-26 04:14:54,924 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-10-26 04:14:54,925 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 280#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 281#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 295#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 288#L20-3 main_~x~0 := main_~x~0 - 1; 289#L19-2 main_~y~0 := main_~y~0 - 1; 292#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 305#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 304#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 302#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2020-10-26 04:14:54,925 INFO L796 eck$LassoCheckResult]: Loop: 298#L20-3 main_~x~0 := main_~x~0 - 1; 290#L19-2 main_~y~0 := main_~y~0 - 1; 291#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 299#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 294#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2020-10-26 04:14:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:54,926 INFO L82 PathProgramCache]: Analyzing trace with hash -363863338, now seen corresponding path program 2 times [2020-10-26 04:14:54,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:54,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399682358] [2020-10-26 04:14:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 04:14:55,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399682358] [2020-10-26 04:14:55,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:14:55,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:14:55,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143061423] [2020-10-26 04:14:55,018 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-26 04:14:55,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:55,019 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 2 times [2020-10-26 04:14:55,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:55,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576848981] [2020-10-26 04:14:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:55,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:55,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:55,031 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:55,073 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:55,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:55,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:55,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:55,074 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:14:55,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:55,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:55,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:55,074 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2020-10-26 04:14:55,074 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:55,074 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:55,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,233 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:55,234 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:55,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:55,239 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:55,244 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:55,244 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=-5} Honda state: {ULTIMATE.start_main_#t~nondet1=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:55,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:55,287 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:55,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:14:55,334 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:55,405 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:14:55,407 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:55,407 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:55,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:55,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:55,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:14:55,408 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:55,408 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:55,408 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:55,408 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2020-10-26 04:14:55,408 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:55,408 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:55,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,557 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:55,557 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 [2020-10-26 04:14:55,562 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 [2020-10-26 04:14:55,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:55,564 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:55,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:55,565 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 04:14:55,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:55,566 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-26 04:14:55,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:14:55,569 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) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:55,598 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 [2020-10-26 04:14:55,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:55,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:55,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:55,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:55,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:55,601 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:14:55,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:14:55,603 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:14:55,606 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 04:14:55,606 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) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:55,609 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:14:55,609 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:14:55,609 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:14:55,609 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-26 04:14:55,631 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:14:55,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:55,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:55,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:55,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:55,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:55,703 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 [2020-10-26 04:14:55,703 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand 4 states. [2020-10-26 04:14:55,728 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 80 states and 118 transitions. Complement of second has 7 states. [2020-10-26 04:14:55,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:14:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:14:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2020-10-26 04:14:55,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 5 letters. [2020-10-26 04:14:55,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:55,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 15 letters. Loop has 5 letters. [2020-10-26 04:14:55,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:55,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 10 letters. [2020-10-26 04:14:55,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:55,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 118 transitions. [2020-10-26 04:14:55,734 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-26 04:14:55,736 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 54 states and 78 transitions. [2020-10-26 04:14:55,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-26 04:14:55,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-10-26 04:14:55,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 78 transitions. [2020-10-26 04:14:55,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:14:55,737 INFO L691 BuchiCegarLoop]: Abstraction has 54 states and 78 transitions. [2020-10-26 04:14:55,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 78 transitions. [2020-10-26 04:14:55,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2020-10-26 04:14:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 04:14:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2020-10-26 04:14:55,742 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2020-10-26 04:14:55,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:14:55,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:14:55,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:14:55,747 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 4 states. [2020-10-26 04:14:55,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:14:55,774 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2020-10-26 04:14:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:14:55,775 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 53 transitions. [2020-10-26 04:14:55,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-26 04:14:55,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 31 states and 46 transitions. [2020-10-26 04:14:55,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-26 04:14:55,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-26 04:14:55,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 46 transitions. [2020-10-26 04:14:55,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:14:55,778 INFO L691 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2020-10-26 04:14:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 46 transitions. [2020-10-26 04:14:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-26 04:14:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-26 04:14:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2020-10-26 04:14:55,782 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2020-10-26 04:14:55,782 INFO L594 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2020-10-26 04:14:55,782 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:14:55,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 46 transitions. [2020-10-26 04:14:55,783 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-26 04:14:55,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:55,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:55,784 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-26 04:14:55,784 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:14:55,784 INFO L794 eck$LassoCheckResult]: Stem: 542#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 538#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 539#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 551#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 559#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 546#L20-3 main_~x~0 := main_~x~0 - 1; 547#L19-2 main_~y~0 := main_~y~0 - 1; 567#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 565#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 549#L20-2 [2020-10-26 04:14:55,784 INFO L796 eck$LassoCheckResult]: Loop: 549#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 549#L20-2 [2020-10-26 04:14:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:55,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 3 times [2020-10-26 04:14:55,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:55,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934753654] [2020-10-26 04:14:55,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:55,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:55,800 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:55,802 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:55,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:55,803 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2020-10-26 04:14:55,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:55,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731989185] [2020-10-26 04:14:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:55,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:55,810 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:55,811 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:55,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267694, now seen corresponding path program 4 times [2020-10-26 04:14:55,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:55,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930324806] [2020-10-26 04:14:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:55,844 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:55,863 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:55,866 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:55,906 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:55,906 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:55,906 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:55,906 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:55,907 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:14:55,907 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:55,907 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:55,907 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:55,907 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2020-10-26 04:14:55,907 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:55,908 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:55,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:55,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:56,009 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:56,010 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:56,021 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:56,021 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 34 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:56,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:14:56,065 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:56,214 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:14:56,216 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:56,217 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:56,217 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:56,217 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:56,217 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:14:56,217 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:56,217 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:56,217 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:56,217 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2020-10-26 04:14:56,217 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:56,217 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:56,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:56,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:56,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:56,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:56,303 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:56,303 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:56,307 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 [2020-10-26 04:14:56,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:56,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:56,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:56,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:56,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:56,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:14:56,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:14:56,312 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:14:56,315 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:14:56,315 INFO L444 ModelExtractionUtils]: 0 out of 4 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:56,328 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:14:56,328 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:14:56,328 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:14:56,328 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-10-26 04:14:56,350 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:14:56,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:56,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:56,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:56,400 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:56,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:56,402 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 [2020-10-26 04:14:56,402 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2020-10-26 04:14:56,426 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2020-10-26 04:14:56,426 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 [2020-10-26 04:14:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-26 04:14:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-26 04:14:56,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2020-10-26 04:14:56,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:56,427 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:14:56,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:56,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:56,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:56,472 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:56,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:56,473 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-26 04:14:56,473 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2020-10-26 04:14:56,486 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2020-10-26 04:14:56,489 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 [2020-10-26 04:14:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-26 04:14:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-26 04:14:56,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2020-10-26 04:14:56,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:56,490 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:14:56,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:56,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:56,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:56,532 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:56,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:56,533 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-26 04:14:56,533 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2020-10-26 04:14:56,556 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 38 states and 54 transitions. Complement of second has 4 states. [2020-10-26 04:14:56,558 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 [2020-10-26 04:14:56,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-26 04:14:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-10-26 04:14:56,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 1 letters. [2020-10-26 04:14:56,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:56,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2020-10-26 04:14:56,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:56,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2020-10-26 04:14:56,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:56,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 54 transitions. [2020-10-26 04:14:56,563 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:14:56,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 27 states and 37 transitions. [2020-10-26 04:14:56,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-26 04:14:56,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-26 04:14:56,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2020-10-26 04:14:56,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:14:56,568 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-10-26 04:14:56,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2020-10-26 04:14:56,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-10-26 04:14:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-26 04:14:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2020-10-26 04:14:56,573 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2020-10-26 04:14:56,573 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2020-10-26 04:14:56,573 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 04:14:56,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2020-10-26 04:14:56,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:14:56,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:56,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:56,578 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1] [2020-10-26 04:14:56,578 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:14:56,580 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 799#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 806#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 803#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 804#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 802#L20-3 main_~x~0 := main_~x~0 - 1; 801#L19-2 main_~y~0 := main_~y~0 - 1; 796#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 797#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 807#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 810#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 813#L20-3 main_~x~0 := main_~x~0 - 1; 812#L19-2 main_~y~0 := main_~y~0 - 1; 811#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 808#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2020-10-26 04:14:56,580 INFO L796 eck$LassoCheckResult]: Loop: 800#L19-2 main_~y~0 := main_~y~0 - 1; 794#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 795#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2020-10-26 04:14:56,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:56,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756676, now seen corresponding path program 1 times [2020-10-26 04:14:56,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:56,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007951463] [2020-10-26 04:14:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:56,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:56,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:56,618 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:56,619 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 2 times [2020-10-26 04:14:56,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:56,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257156838] [2020-10-26 04:14:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:56,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:56,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:56,628 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:56,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1390830772, now seen corresponding path program 2 times [2020-10-26 04:14:56,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:56,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610500286] [2020-10-26 04:14:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 04:14:56,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610500286] [2020-10-26 04:14:56,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642137107] [2020-10-26 04:14:56,674 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:14:56,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 04:14:56,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 04:14:56,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 04:14:56,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 04:14:56,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:14:56,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-26 04:14:56,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312651921] [2020-10-26 04:14:56,800 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:56,800 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:56,800 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:56,801 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:56,801 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:14:56,801 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:56,801 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:56,801 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:56,801 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2020-10-26 04:14:56,801 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:56,801 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:56,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:56,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:56,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:56,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:56,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:56,903 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:56,903 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:56,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:56,911 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:56,920 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:56,920 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:56,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:56,960 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:56,964 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:56,964 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:57,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:57,003 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:57,007 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:57,007 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:57,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:57,046 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:57,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:14:57,097 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:57,219 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:14:57,222 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:57,222 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:57,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:57,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:57,222 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:14:57,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:57,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:57,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:57,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2020-10-26 04:14:57,223 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:57,223 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:57,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:57,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:57,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:57,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:57,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:57,347 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:57,347 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:57,351 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 [2020-10-26 04:14:57,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:57,353 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:57,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:57,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:57,369 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:14:57,369 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:14:57,373 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 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:57,396 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 [2020-10-26 04:14:57,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:57,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:57,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:57,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:57,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:57,399 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:14:57,399 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:14:57,401 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:57,425 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 [2020-10-26 04:14:57,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:57,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:57,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:57,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:57,426 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:57,427 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:14:57,427 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:14:57,430 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:14:57,436 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:14:57,436 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:57,439 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:14:57,439 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:14:57,440 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:14:57,440 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-10-26 04:14:57,461 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:14:57,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:57,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:57,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:57,503 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:57,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:57,540 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 [2020-10-26 04:14:57,540 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-10-26 04:14:57,568 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 63 states and 85 transitions. Complement of second has 7 states. [2020-10-26 04:14:57,568 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 [2020-10-26 04:14:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:14:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-26 04:14:57,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2020-10-26 04:14:57,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:57,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 18 letters. Loop has 3 letters. [2020-10-26 04:14:57,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:57,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2020-10-26 04:14:57,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:57,570 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-10-26 04:14:57,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:14:57,573 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 44 states and 59 transitions. [2020-10-26 04:14:57,573 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-26 04:14:57,573 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-26 04:14:57,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 59 transitions. [2020-10-26 04:14:57,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:14:57,573 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 59 transitions. [2020-10-26 04:14:57,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 59 transitions. [2020-10-26 04:14:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2020-10-26 04:14:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-26 04:14:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-10-26 04:14:57,577 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-10-26 04:14:57,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:14:57,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:14:57,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:14:57,578 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 5 states. [2020-10-26 04:14:57,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:14:57,608 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2020-10-26 04:14:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 04:14:57,609 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 68 transitions. [2020-10-26 04:14:57,610 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:14:57,611 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 45 states and 58 transitions. [2020-10-26 04:14:57,611 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-26 04:14:57,611 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-26 04:14:57,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 58 transitions. [2020-10-26 04:14:57,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:14:57,612 INFO L691 BuchiCegarLoop]: Abstraction has 45 states and 58 transitions. [2020-10-26 04:14:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 58 transitions. [2020-10-26 04:14:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2020-10-26 04:14:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 04:14:57,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2020-10-26 04:14:57,615 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2020-10-26 04:14:57,615 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2020-10-26 04:14:57,616 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-26 04:14:57,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 53 transitions. [2020-10-26 04:14:57,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:14:57,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:57,616 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:57,617 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1] [2020-10-26 04:14:57,617 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:14:57,617 INFO L794 eck$LassoCheckResult]: Stem: 1103#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1104#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1112#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1108#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1109#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1133#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1107#L20-3 main_~x~0 := main_~x~0 - 1; 1106#L19-2 main_~y~0 := main_~y~0 - 1; 1101#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1102#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1124#L19-2 main_~y~0 := main_~y~0 - 1; 1127#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1123#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1121#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1117#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1120#L20-3 main_~x~0 := main_~x~0 - 1; 1119#L19-2 main_~y~0 := main_~y~0 - 1; 1118#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1115#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2020-10-26 04:14:57,618 INFO L796 eck$LassoCheckResult]: Loop: 1105#L19-2 main_~y~0 := main_~y~0 - 1; 1099#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1100#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2020-10-26 04:14:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:57,618 INFO L82 PathProgramCache]: Analyzing trace with hash 715204654, now seen corresponding path program 3 times [2020-10-26 04:14:57,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:57,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234328087] [2020-10-26 04:14:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:57,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:57,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:57,651 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:57,651 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 3 times [2020-10-26 04:14:57,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:57,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636074216] [2020-10-26 04:14:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:57,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:57,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:57,659 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:57,660 INFO L82 PathProgramCache]: Analyzing trace with hash -670878974, now seen corresponding path program 4 times [2020-10-26 04:14:57,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:57,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989535959] [2020-10-26 04:14:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 04:14:57,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989535959] [2020-10-26 04:14:57,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568088540] [2020-10-26 04:14:57,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:14:57,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-26 04:14:57,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 04:14:57,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-26 04:14:57,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 04:14:57,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:14:57,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-26 04:14:57,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529458215] [2020-10-26 04:14:57,801 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:57,802 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:57,802 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:57,802 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:57,802 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:14:57,802 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:57,802 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:57,802 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:57,802 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2020-10-26 04:14:57,802 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:57,802 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:57,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:57,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:57,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:57,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:57,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:57,893 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:57,893 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:57,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:57,897 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:57,901 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:57,901 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:57,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:57,931 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 50 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:57,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:14:57,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:14:58,019 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:14:58,020 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:58,021 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:58,021 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:58,021 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:58,021 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:14:58,021 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:58,021 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:58,021 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:58,021 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2020-10-26 04:14:58,021 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:58,021 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:58,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,113 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:58,113 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:58,121 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 [2020-10-26 04:14:58,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:58,123 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:58,123 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:58,123 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:58,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:58,124 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:14:58,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:58,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:14:58,136 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 04:14:58,136 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:58,150 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:14:58,150 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:14:58,150 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:14:58,150 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:58,190 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:14:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:58,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:58,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:58,232 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:58,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:58,262 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 [2020-10-26 04:14:58,262 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2020-10-26 04:14:58,289 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 46 states and 61 transitions. Complement of second has 7 states. [2020-10-26 04:14:58,290 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 [2020-10-26 04:14:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:14:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-26 04:14:58,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 3 letters. [2020-10-26 04:14:58,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:58,291 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:14:58,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:58,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:58,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:58,332 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:58,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:58,361 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-26 04:14:58,361 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2020-10-26 04:14:58,406 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 74 states and 97 transitions. Complement of second has 9 states. [2020-10-26 04:14:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-26 04:14:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:14:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2020-10-26 04:14:58,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 3 letters. [2020-10-26 04:14:58,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:58,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 22 letters. Loop has 3 letters. [2020-10-26 04:14:58,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:58,408 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 6 letters. [2020-10-26 04:14:58,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:58,409 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 97 transitions. [2020-10-26 04:14:58,410 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:14:58,411 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 68 states and 89 transitions. [2020-10-26 04:14:58,411 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-26 04:14:58,412 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-26 04:14:58,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 89 transitions. [2020-10-26 04:14:58,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:14:58,412 INFO L691 BuchiCegarLoop]: Abstraction has 68 states and 89 transitions. [2020-10-26 04:14:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 89 transitions. [2020-10-26 04:14:58,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-10-26 04:14:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-26 04:14:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-10-26 04:14:58,418 INFO L714 BuchiCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-10-26 04:14:58,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:14:58,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 04:14:58,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:14:58,419 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2020-10-26 04:14:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:14:58,514 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2020-10-26 04:14:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:14:58,515 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 188 transitions. [2020-10-26 04:14:58,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:14:58,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 107 states and 137 transitions. [2020-10-26 04:14:58,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-26 04:14:58,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-26 04:14:58,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 137 transitions. [2020-10-26 04:14:58,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:14:58,520 INFO L691 BuchiCegarLoop]: Abstraction has 107 states and 137 transitions. [2020-10-26 04:14:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 137 transitions. [2020-10-26 04:14:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2020-10-26 04:14:58,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-26 04:14:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2020-10-26 04:14:58,527 INFO L714 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2020-10-26 04:14:58,527 INFO L594 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2020-10-26 04:14:58,527 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-26 04:14:58,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 111 transitions. [2020-10-26 04:14:58,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:14:58,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:14:58,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:14:58,530 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1] [2020-10-26 04:14:58,530 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:14:58,530 INFO L794 eck$LassoCheckResult]: Stem: 1705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1706#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1719#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1715#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1716#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1754#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1753#L20-3 main_~x~0 := main_~x~0 - 1; 1752#L19-2 main_~y~0 := main_~y~0 - 1; 1750#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1751#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1742#L19-2 main_~y~0 := main_~y~0 - 1; 1741#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1738#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1735#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1732#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1734#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1724#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1727#L20-3 main_~x~0 := main_~x~0 - 1; 1726#L19-2 main_~y~0 := main_~y~0 - 1; 1725#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1722#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2020-10-26 04:14:58,531 INFO L796 eck$LassoCheckResult]: Loop: 1713#L19-2 main_~y~0 := main_~y~0 - 1; 1707#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1708#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2020-10-26 04:14:58,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:58,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1768639598, now seen corresponding path program 5 times [2020-10-26 04:14:58,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:58,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148263995] [2020-10-26 04:14:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:58,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:58,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:58,569 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:58,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:58,574 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 4 times [2020-10-26 04:14:58,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:58,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821917735] [2020-10-26 04:14:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:58,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:58,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:58,586 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:58,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1116494142, now seen corresponding path program 6 times [2020-10-26 04:14:58,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:14:58,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002668690] [2020-10-26 04:14:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:14:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:58,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:14:58,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:14:58,629 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:14:58,652 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:58,652 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:58,652 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:58,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:58,652 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:14:58,652 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:58,652 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:58,653 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:58,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2020-10-26 04:14:58,653 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:58,653 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:58,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,739 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:58,740 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:58,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:58,744 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:58,748 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:14:58,749 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:58,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:14:58,788 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 55 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:58,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:14:58,827 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:58,929 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:14:58,931 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:14:58,931 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:14:58,931 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:14:58,932 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:14:58,932 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:14:58,932 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:58,932 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:14:58,932 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:14:58,932 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2020-10-26 04:14:58,932 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:14:58,932 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:14:58,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:58,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:14:59,015 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:14:59,015 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:59,030 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 [2020-10-26 04:14:59,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:59,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:59,033 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:59,033 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:59,035 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:14:59,036 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:59,043 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:59,077 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 [2020-10-26 04:14:59,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:14:59,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:14:59,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:14:59,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:14:59,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:14:59,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:14:59,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:14:59,082 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:14:59,086 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:14:59,086 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:14:59,090 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:14:59,090 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:14:59,090 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:14:59,090 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:14:59,111 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:14:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:59,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:59,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:59,179 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:59,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:59,207 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 [2020-10-26 04:14:59,207 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2020-10-26 04:14:59,237 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 101 states and 134 transitions. Complement of second has 7 states. [2020-10-26 04:14:59,240 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 [2020-10-26 04:14:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:14:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-26 04:14:59,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 21 letters. Loop has 3 letters. [2020-10-26 04:14:59,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:59,241 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:14:59,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:59,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:59,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:59,290 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:59,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:59,318 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-26 04:14:59,318 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2020-10-26 04:14:59,367 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 128 states and 166 transitions. Complement of second has 9 states. [2020-10-26 04:14:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-26 04:14:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:14:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2020-10-26 04:14:59,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 21 letters. Loop has 3 letters. [2020-10-26 04:14:59,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:59,369 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:14:59,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:14:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:59,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:14:59,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:14:59,426 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:14:59,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:14:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:14:59,459 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-26 04:14:59,459 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2020-10-26 04:14:59,489 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 139 states and 187 transitions. Complement of second has 8 states. [2020-10-26 04:14:59,494 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 [2020-10-26 04:14:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:14:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-26 04:14:59,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 3 letters. [2020-10-26 04:14:59,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:59,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 24 letters. Loop has 3 letters. [2020-10-26 04:14:59,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:59,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 6 letters. [2020-10-26 04:14:59,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:14:59,497 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 187 transitions. [2020-10-26 04:14:59,499 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:14:59,499 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 0 states and 0 transitions. [2020-10-26 04:14:59,499 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:14:59,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:14:59,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:14:59,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:14:59,500 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:14:59,500 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:14:59,500 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:14:59,500 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-26 04:14:59,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:14:59,501 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:14:59,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:14:59,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:14:59 BoogieIcfgContainer [2020-10-26 04:14:59,508 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:14:59,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:14:59,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:14:59,509 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:14:59,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:14:51" (3/4) ... [2020-10-26 04:14:59,513 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:14:59,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:14:59,514 INFO L168 Benchmark]: Toolchain (without parser) took 9141.58 ms. Allocated memory was 37.7 MB in the beginning and 100.7 MB in the end (delta: 62.9 MB). Free memory was 15.2 MB in the beginning and 46.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:14:59,515 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 37.7 MB. Free memory was 20.5 MB in the beginning and 20.4 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:14:59,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.47 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 23.5 MB in the beginning and 26.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 04:14:59,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.86 ms. Allocated memory is still 46.1 MB. Free memory was 26.6 MB in the beginning and 25.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:14:59,517 INFO L168 Benchmark]: Boogie Preprocessor took 22.32 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 24.4 MB in the end (delta: 825.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:14:59,517 INFO L168 Benchmark]: RCFGBuilder took 326.96 ms. Allocated memory is still 46.1 MB. Free memory was 24.3 MB in the beginning and 25.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:14:59,518 INFO L168 Benchmark]: BuchiAutomizer took 8482.24 ms. Allocated memory was 46.1 MB in the beginning and 100.7 MB in the end (delta: 54.5 MB). Free memory was 25.5 MB in the beginning and 47.2 MB in the end (delta: -21.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:14:59,519 INFO L168 Benchmark]: Witness Printer took 4.99 ms. Allocated memory is still 100.7 MB. Free memory was 47.2 MB in the beginning and 46.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:14:59,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 37.7 MB. Free memory was 20.5 MB in the beginning and 20.4 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.47 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 23.5 MB in the beginning and 26.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.86 ms. Allocated memory is still 46.1 MB. Free memory was 26.6 MB in the beginning and 25.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.32 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 24.4 MB in the end (delta: 825.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 326.96 ms. Allocated memory is still 46.1 MB. Free memory was 24.3 MB in the beginning and 25.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8482.24 ms. Allocated memory was 46.1 MB in the beginning and 100.7 MB in the end (delta: 54.5 MB). Free memory was 25.5 MB in the beginning and 47.2 MB in the end (delta: -21.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.99 ms. Allocated memory is still 100.7 MB. Free memory was 47.2 MB in the beginning and 46.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (3 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.4s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 6.4s. Construction of modules took 0.2s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 71 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 83 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 137 SDtfs, 155 SDslu, 81 SDs, 0 SdLazy, 157 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf99 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf94 smp100 dnf112 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...