./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/aaron3-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/aaron3-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer --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 b11f086006b59545dfe302b4d0afe0208312f571 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:47:59,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:47:59,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:47:59,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:47:59,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:47:59,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:47:59,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:47:59,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:47:59,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:47:59,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:47:59,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:47:59,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:47:59,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:47:59,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:47:59,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:47:59,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:47:59,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:47:59,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:47:59,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:47:59,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:47:59,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:47:59,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:47:59,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:47:59,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:47:59,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:47:59,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:47:59,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:47:59,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:47:59,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:47:59,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:47:59,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:47:59,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:47:59,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:47:59,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:47:59,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:47:59,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:47:59,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:47:59,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:47:59,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:47:59,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:47:59,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:47:59,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 22:47:59,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:47:59,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:47:59,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:47:59,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:47:59,776 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:47:59,776 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:47:59,777 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:47:59,777 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:47:59,777 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:47:59,777 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:47:59,778 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:47:59,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:47:59,778 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:47:59,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:47:59,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:47:59,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:47:59,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:47:59,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:47:59,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:47:59,780 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:47:59,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:47:59,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:47:59,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:47:59,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:47:59,781 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:47:59,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:47:59,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:47:59,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:47:59,782 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:47:59,783 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:47:59,784 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:/tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b11f086006b59545dfe302b4d0afe0208312f571 [2020-11-29 22:48:00,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:48:00,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:48:00,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:48:00,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:48:00,137 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:48:00,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/aaron3-1.c [2020-11-29 22:48:00,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/data/97af5fe67/46e55c2e4786461db70534f28eb0ec52/FLAG4845efa00 [2020-11-29 22:48:00,871 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:48:00,872 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/sv-benchmarks/c/termination-crafted/aaron3-1.c [2020-11-29 22:48:00,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/data/97af5fe67/46e55c2e4786461db70534f28eb0ec52/FLAG4845efa00 [2020-11-29 22:48:01,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/data/97af5fe67/46e55c2e4786461db70534f28eb0ec52 [2020-11-29 22:48:01,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:48:01,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:48:01,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:48:01,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:48:01,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:48:01,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2262441e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01, skipping insertion in model container [2020-11-29 22:48:01,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:48:01,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:48:01,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:48:01,446 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:48:01,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:48:01,500 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:48:01,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01 WrapperNode [2020-11-29 22:48:01,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:48:01,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:48:01,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:48:01,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:48:01,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:48:01,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:48:01,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:48:01,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:48:01,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (1/1) ... [2020-11-29 22:48:01,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:48:01,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:48:01,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:48:01,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:48:01,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/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 [2020-11-29 22:48:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:48:01,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:48:02,131 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:48:02,131 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 22:48:02,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:48:02 BoogieIcfgContainer [2020-11-29 22:48:02,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:48:02,134 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:48:02,135 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:48:02,139 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:48:02,140 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:48:02,140 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:48:01" (1/3) ... [2020-11-29 22:48:02,142 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2adc0540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:48:02, skipping insertion in model container [2020-11-29 22:48:02,142 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:48:02,142 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:48:01" (2/3) ... [2020-11-29 22:48:02,143 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2adc0540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:48:02, skipping insertion in model container [2020-11-29 22:48:02,143 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:48:02,143 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:48:02" (3/3) ... [2020-11-29 22:48:02,145 INFO L373 chiAutomizerObserver]: Analyzing ICFG aaron3-1.c [2020-11-29 22:48:02,230 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:48:02,230 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:48:02,230 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:48:02,230 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:48:02,230 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:48:02,231 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:48:02,231 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:48:02,232 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:48:02,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-11-29 22:48:02,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:48:02,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:48:02,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:48:02,280 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 22:48:02,280 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:48:02,281 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:48:02,281 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-11-29 22:48:02,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:48:02,284 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:48:02,284 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:48:02,285 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 22:48:02,285 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:48:02,293 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~z~0, main_~tx~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~tx~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~tx~0 := main_#t~nondet3;havoc main_#t~nondet3; 6#L22true assume !!(-1073741823 <= main_~tx~0 && main_~tx~0 <= 1073741823); 7#L23true assume !!(-1073741823 <= main_~z~0 && main_~z~0 <= 1073741823); 9#L24true assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 12#L25true assume !!(main_~y~0 <= 1073741823); 13#L27-2true [2020-11-29 22:48:02,293 INFO L796 eck$LassoCheckResult]: Loop: 13#L27-2true assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 5#L27true assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := 1 + main_~y~0; 13#L27-2true [2020-11-29 22:48:02,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:02,303 INFO L82 PathProgramCache]: Analyzing trace with hash 29742506, now seen corresponding path program 1 times [2020-11-29 22:48:02,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:02,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813001016] [2020-11-29 22:48:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:02,422 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:02,445 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:02,472 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:02,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1931, now seen corresponding path program 1 times [2020-11-29 22:48:02,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:02,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58904784] [2020-11-29 22:48:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:02,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:02,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:02,515 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:02,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1482221836, now seen corresponding path program 1 times [2020-11-29 22:48:02,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:02,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308331639] [2020-11-29 22:48:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:02,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:02,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:02,573 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:02,715 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:48:02,718 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:48:02,718 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:48:02,718 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:48:02,719 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:48:02,719 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:02,719 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:48:02,719 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:48:02,719 INFO L133 ssoRankerPreferences]: Filename of dumped script: aaron3-1.c_Iteration1_Loop [2020-11-29 22:48:02,720 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:48:02,720 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:48:02,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:02,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:02,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:02,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:02,938 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:48:02,938 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:02,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:02,949 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:02,961 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:48:02,961 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 /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:03,011 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:03,011 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 [2020-11-29 22:48:03,016 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:48:03,016 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 /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/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 [2020-11-29 22:48:03,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:03,063 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:03,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:48:03,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:48:03,405 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:48:03,408 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:48:03,408 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:48:03,408 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:48:03,408 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:48:03,408 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:48:03,408 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:03,409 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:48:03,409 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:48:03,409 INFO L133 ssoRankerPreferences]: Filename of dumped script: aaron3-1.c_Iteration1_Loop [2020-11-29 22:48:03,409 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:48:03,409 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:48:03,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:03,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:03,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:03,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:03,622 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:48:03,630 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:03,641 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 [2020-11-29 22:48:03,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:03,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:03,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:03,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:03,651 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:48:03,651 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:03,658 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:03,696 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 [2020-11-29 22:48:03,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:03,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:03,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:03,699 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:03,708 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:48:03,708 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:48:03,721 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/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 [2020-11-29 22:48:03,758 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 [2020-11-29 22:48:03,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:03,763 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:48:03,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:03,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:03,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:03,766 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:48:03,767 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:48:03,771 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:48:03,781 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:48:03,782 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:03,787 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:48:03,787 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:48:03,788 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:48:03,788 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~x~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:03,820 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:48:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:03,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:48:03,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:03,903 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:48:03,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:48:03,937 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 [2020-11-29 22:48:03,939 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 3 states. [2020-11-29 22:48:04,000 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 3 states. Result 31 states and 42 transitions. Complement of second has 8 states. [2020-11-29 22:48:04,001 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 [2020-11-29 22:48:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:48:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-29 22:48:04,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 22:48:04,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:04,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 22:48:04,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:04,008 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 22:48:04,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:04,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 42 transitions. [2020-11-29 22:48:04,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:48:04,017 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 12 states and 15 transitions. [2020-11-29 22:48:04,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-29 22:48:04,019 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-29 22:48:04,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2020-11-29 22:48:04,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:48:04,020 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-29 22:48:04,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2020-11-29 22:48:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 22:48:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 22:48:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-11-29 22:48:04,050 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-29 22:48:04,050 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-29 22:48:04,050 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:48:04,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2020-11-29 22:48:04,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 22:48:04,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:48:04,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:48:04,052 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:48:04,053 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:48:04,053 INFO L794 eck$LassoCheckResult]: Stem: 94#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~z~0, main_~tx~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~tx~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~tx~0 := main_#t~nondet3;havoc main_#t~nondet3; 95#L22 assume !!(-1073741823 <= main_~tx~0 && main_~tx~0 <= 1073741823); 99#L23 assume !!(-1073741823 <= main_~z~0 && main_~z~0 <= 1073741823); 100#L24 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 101#L25 assume !!(main_~y~0 <= 1073741823); 103#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 96#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~tx~0 := main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 92#L31 [2020-11-29 22:48:04,053 INFO L796 eck$LassoCheckResult]: Loop: 92#L31 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 93#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 102#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~tx~0 := main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 92#L31 [2020-11-29 22:48:04,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:04,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1482221843, now seen corresponding path program 1 times [2020-11-29 22:48:04,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:04,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569925998] [2020-11-29 22:48:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:04,068 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:04,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:04,078 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:04,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:04,079 INFO L82 PathProgramCache]: Analyzing trace with hash 67272, now seen corresponding path program 1 times [2020-11-29 22:48:04,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:04,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266973544] [2020-11-29 22:48:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:04,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:04,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:04,094 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:04,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:04,095 INFO L82 PathProgramCache]: Analyzing trace with hash -312117156, now seen corresponding path program 1 times [2020-11-29 22:48:04,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:04,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683644404] [2020-11-29 22:48:04,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:04,111 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:04,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:04,129 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:04,211 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:48:04,211 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:48:04,211 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:48:04,211 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:48:04,211 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:48:04,212 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:04,212 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:48:04,212 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:48:04,212 INFO L133 ssoRankerPreferences]: Filename of dumped script: aaron3-1.c_Iteration2_Loop [2020-11-29 22:48:04,212 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:48:04,212 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:48:04,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:04,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:04,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:04,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:04,411 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:48:04,411 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:04,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:04,415 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:04,421 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:48:04,421 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 /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:04,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:04,467 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:04,473 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:48:04,473 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=7} Honda state: {ULTIMATE.start_main_#t~nondet4=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:04,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:04,560 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:04,565 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:48:04,565 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 /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:04,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:04,614 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:04,669 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:48:04,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:48:04,715 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:48:04,717 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:48:04,718 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:48:04,718 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:48:04,718 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:48:04,718 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:48:04,718 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:04,718 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:48:04,718 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:48:04,718 INFO L133 ssoRankerPreferences]: Filename of dumped script: aaron3-1.c_Iteration2_Loop [2020-11-29 22:48:04,718 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:48:04,719 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:48:04,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:04,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:04,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:04,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:04,974 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:48:04,974 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:04,986 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 [2020-11-29 22:48:04,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:04,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:04,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:04,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:04,996 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:48:04,996 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:05,007 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:05,059 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 [2020-11-29 22:48:05,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:05,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:48:05,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:05,062 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 22:48:05,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:05,069 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 22:48:05,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:05,074 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:05,123 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 [2020-11-29 22:48:05,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:05,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:05,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:05,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:05,136 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:48:05,136 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:05,146 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:05,196 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 [2020-11-29 22:48:05,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:05,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:48:05,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:05,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:05,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:05,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:48:05,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:05,213 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-11-29 22:48:05,251 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:05,257 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 [2020-11-29 22:48:05,259 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:05,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:05,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:05,260 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-29 22:48:05,264 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-29 22:48:05,264 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-11-29 22:48:05,271 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:05,318 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 [2020-11-29 22:48:05,320 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:05,320 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:48:05,320 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:05,320 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 22:48:05,320 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-29 22:48:05,322 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:48:05,322 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:48:05,331 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:05,383 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 [2020-11-29 22:48:05,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:05,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:05,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:05,386 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-29 22:48:05,393 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-29 22:48:05,394 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:05,400 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:05,438 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 [2020-11-29 22:48:05,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:05,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:48:05,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:05,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:05,446 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-29 22:48:05,451 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-11-29 22:48:05,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:48:05,458 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:48:05,498 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 22:48:05,498 INFO L444 ModelExtractionUtils]: 7 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:05,506 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:48:05,506 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:48:05,506 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:48:05,506 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 2*ULTIMATE.start_main_~z~0 f1 = 2*ULTIMATE.start_main_~tx~0 + 2*ULTIMATE.start_main_~z~0 + 2147483647 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:05,534 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:48:18,048 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* 2 c_ULTIMATE.start_main_~z~0))) (let ((.cse0 (> .cse1 0))) (let ((.cse2 (ite .cse0 1 0))) (or (and (> c_oldRank1 (ite .cse0 .cse1 (+ (* 2 c_ULTIMATE.start_main_~tx~0) .cse1 2147483647))) (>= c_oldRank1 0) (>= c_oldRank0 .cse2)) (and (>= c_oldRank0 0) (> c_oldRank0 .cse2)) c_unseeded)))) is different from false [2020-11-29 22:48:30,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:30,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:48:30,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:30,718 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:48:30,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:30,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 22:48:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:48:31,010 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 [2020-11-29 22:48:31,010 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-29 22:48:43,776 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2020-11-29 22:48:43,793 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 17 states and 22 transitions. Complement of second has 6 states. [2020-11-29 22:48:43,794 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 [2020-11-29 22:48:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 22:48:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-29 22:48:43,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 22:48:43,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:43,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-29 22:48:43,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:43,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-29 22:48:43,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:43,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2020-11-29 22:48:43,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:48:43,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2020-11-29 22:48:43,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 22:48:43,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-29 22:48:43,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2020-11-29 22:48:43,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:48:43,800 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-11-29 22:48:43,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2020-11-29 22:48:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-11-29 22:48:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 22:48:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2020-11-29 22:48:43,802 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-11-29 22:48:43,803 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-11-29 22:48:43,803 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:48:43,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2020-11-29 22:48:43,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:48:43,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:48:43,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:48:43,804 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:48:43,805 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:48:43,805 INFO L794 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~z~0, main_~tx~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~tx~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~tx~0 := main_#t~nondet3;havoc main_#t~nondet3; 184#L22 assume !!(-1073741823 <= main_~tx~0 && main_~tx~0 <= 1073741823); 188#L23 assume !!(-1073741823 <= main_~z~0 && main_~z~0 <= 1073741823); 189#L24 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 190#L25 assume !!(main_~y~0 <= 1073741823); 192#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 193#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~tx~0 := main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 179#L31 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 181#L27-2 [2020-11-29 22:48:43,805 INFO L796 eck$LassoCheckResult]: Loop: 181#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 185#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := 1 + main_~y~0; 181#L27-2 [2020-11-29 22:48:43,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:43,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1295763161, now seen corresponding path program 2 times [2020-11-29 22:48:43,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:43,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350319290] [2020-11-29 22:48:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:43,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:43,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:43,824 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:43,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:43,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1931, now seen corresponding path program 2 times [2020-11-29 22:48:43,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:43,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603235380] [2020-11-29 22:48:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:43,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:43,846 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:43,847 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:43,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:43,848 INFO L82 PathProgramCache]: Analyzing trace with hash -312117149, now seen corresponding path program 1 times [2020-11-29 22:48:43,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:43,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158540490] [2020-11-29 22:48:43,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:43,864 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:43,917 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:43,954 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:44,007 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:48:44,008 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:48:44,008 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:48:44,008 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:48:44,008 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:48:44,008 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:44,008 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:48:44,008 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:48:44,009 INFO L133 ssoRankerPreferences]: Filename of dumped script: aaron3-1.c_Iteration3_Loop [2020-11-29 22:48:44,009 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:48:44,009 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:48:44,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:44,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:44,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:44,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:44,143 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:48:44,143 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:44,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:44,149 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 [2020-11-29 22:48:44,155 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:48:44,155 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:44,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:44,198 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 [2020-11-29 22:48:44,203 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:48:44,203 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:44,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:44,245 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:44,249 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:48:44,249 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:44,294 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:44,294 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:44,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:48:44,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 22:48:44,581 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:48:44,583 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:48:44,584 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:48:44,584 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:48:44,584 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:48:44,584 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:48:44,584 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:44,584 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:48:44,584 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:48:44,584 INFO L133 ssoRankerPreferences]: Filename of dumped script: aaron3-1.c_Iteration3_Loop [2020-11-29 22:48:44,584 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:48:44,584 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:48:44,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:44,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:44,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:44,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:44,712 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:48:44,712 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:44,716 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:48:44,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:44,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:48:44,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:44,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:44,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:44,720 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:48:44,720 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:44,722 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:44,765 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 [2020-11-29 22:48:44,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:44,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:44,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:44,768 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:44,771 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:48:44,771 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:44,777 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:44,824 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 [2020-11-29 22:48:44,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:44,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:48:44,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:44,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:44,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:44,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:48:44,832 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:44,839 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:48:44,850 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:48:44,850 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:44,854 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:48:44,854 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:48:44,854 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:48:44,854 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:44,892 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:48:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:44,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:48:44,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:44,960 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:48:44,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:48:44,984 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 [2020-11-29 22:48:44,984 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-29 22:48:45,013 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 22 states and 29 transitions. Complement of second has 5 states. [2020-11-29 22:48:45,017 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 [2020-11-29 22:48:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:48:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-11-29 22:48:45,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 22:48:45,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:45,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-29 22:48:45,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:45,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 4 letters. [2020-11-29 22:48:45,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:45,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2020-11-29 22:48:45,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:48:45,021 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 23 transitions. [2020-11-29 22:48:45,021 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 22:48:45,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-29 22:48:45,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2020-11-29 22:48:45,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:48:45,022 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-11-29 22:48:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2020-11-29 22:48:45,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 22:48:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 22:48:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2020-11-29 22:48:45,025 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-11-29 22:48:45,025 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-11-29 22:48:45,025 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 22:48:45,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 23 transitions. [2020-11-29 22:48:45,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 22:48:45,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:48:45,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:48:45,027 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 22:48:45,027 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:48:45,032 INFO L794 eck$LassoCheckResult]: Stem: 272#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~z~0, main_~tx~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~tx~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~tx~0 := main_#t~nondet3;havoc main_#t~nondet3; 273#L22 assume !!(-1073741823 <= main_~tx~0 && main_~tx~0 <= 1073741823); 276#L23 assume !!(-1073741823 <= main_~z~0 && main_~z~0 <= 1073741823); 277#L24 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 278#L25 assume !!(main_~y~0 <= 1073741823); 280#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 281#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~tx~0 := main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 267#L31 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 268#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 282#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~tx~0 := main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 269#L31 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 271#L27-2 [2020-11-29 22:48:45,032 INFO L796 eck$LassoCheckResult]: Loop: 271#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 274#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := 1 + main_~y~0; 271#L27-2 [2020-11-29 22:48:45,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:45,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1085697206, now seen corresponding path program 3 times [2020-11-29 22:48:45,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:45,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152750323] [2020-11-29 22:48:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:45,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:45,080 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:45,083 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:45,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:45,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1931, now seen corresponding path program 3 times [2020-11-29 22:48:45,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:45,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674821445] [2020-11-29 22:48:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:45,097 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:45,103 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:45,104 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:45,104 INFO L82 PathProgramCache]: Analyzing trace with hash 322038932, now seen corresponding path program 2 times [2020-11-29 22:48:45,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:48:45,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456925897] [2020-11-29 22:48:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:48:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:45,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:48:45,144 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:48:45,147 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:48:45,186 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:48:45,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:48:45,187 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:48:45,187 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:48:45,187 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:48:45,187 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:45,187 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:48:45,187 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:48:45,187 INFO L133 ssoRankerPreferences]: Filename of dumped script: aaron3-1.c_Iteration4_Loop [2020-11-29 22:48:45,187 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:48:45,187 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:48:45,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:45,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:45,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:45,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:45,311 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:48:45,312 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:45,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:48:45,321 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:45,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:48:45,370 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 [2020-11-29 22:48:45,671 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:48:45,675 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:48:45,675 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:48:45,675 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:48:45,676 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:48:45,676 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:48:45,676 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:45,676 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:48:45,676 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:48:45,676 INFO L133 ssoRankerPreferences]: Filename of dumped script: aaron3-1.c_Iteration4_Loop [2020-11-29 22:48:45,676 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:48:45,676 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:48:45,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:45,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:45,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:45,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:48:45,807 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:48:45,807 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:48:45,812 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:48:45,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:48:45,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:48:45,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:48:45,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:48:45,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:48:45,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:48:45,816 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:48:45,819 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:48:45,822 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 22:48:45,823 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf17ce06-003c-4c34-838d-5e5e30b9e20a/bin/uautomizer/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 [2020-11-29 22:48:45,844 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:48:45,844 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:48:45,844 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:48:45,844 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-11-29 22:48:45,895 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:48:45,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:45,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:48:45,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:45,941 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:48:45,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:48:45,958 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 [2020-11-29 22:48:45,958 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-29 22:48:45,993 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 20 states and 25 transitions. Complement of second has 5 states. [2020-11-29 22:48:45,994 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 [2020-11-29 22:48:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:48:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-11-29 22:48:45,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-29 22:48:45,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:45,995 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:48:46,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:46,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:48:46,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:46,051 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:48:46,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:48:46,081 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:48:46,081 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-29 22:48:46,098 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 20 states and 25 transitions. Complement of second has 5 states. [2020-11-29 22:48:46,099 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 [2020-11-29 22:48:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:48:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-11-29 22:48:46,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-29 22:48:46,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:46,100 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 22:48:46,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:48:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:46,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:48:46,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:48:46,148 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:48:46,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:48:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:48:46,163 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:48:46,163 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-29 22:48:46,183 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 23 states and 29 transitions. Complement of second has 4 states. [2020-11-29 22:48:46,184 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 [2020-11-29 22:48:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:48:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-11-29 22:48:46,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-29 22:48:46,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:46,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 13 letters. Loop has 2 letters. [2020-11-29 22:48:46,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:46,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-29 22:48:46,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:48:46,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 29 transitions. [2020-11-29 22:48:46,188 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:48:46,188 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2020-11-29 22:48:46,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:48:46,188 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:48:46,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:48:46,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:48:46,188 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:48:46,188 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:48:46,188 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:48:46,189 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 22:48:46,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:48:46,189 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:48:46,189 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 22:48:46,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:48:46 BoogieIcfgContainer [2020-11-29 22:48:46,195 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:48:46,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:48:46,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:48:46,196 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:48:46,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:48:02" (3/4) ... [2020-11-29 22:48:46,199 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:48:46,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:48:46,201 INFO L168 Benchmark]: Toolchain (without parser) took 44972.80 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 114.0 MB in the beginning and 115.0 MB in the end (delta: -940.3 kB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:48:46,201 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:48:46,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.51 ms. Allocated memory is still 138.4 MB. Free memory was 113.7 MB in the beginning and 117.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:48:46,203 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.26 ms. Allocated memory is still 138.4 MB. Free memory was 117.0 MB in the beginning and 115.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:48:46,203 INFO L168 Benchmark]: Boogie Preprocessor took 22.66 ms. Allocated memory is still 138.4 MB. Free memory was 115.9 MB in the beginning and 114.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:48:46,204 INFO L168 Benchmark]: RCFGBuilder took 570.90 ms. Allocated memory is still 138.4 MB. Free memory was 114.8 MB in the beginning and 104.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:48:46,204 INFO L168 Benchmark]: BuchiAutomizer took 44060.55 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 104.4 MB in the beginning and 116.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-11-29 22:48:46,205 INFO L168 Benchmark]: Witness Printer took 4.14 ms. Allocated memory is still 167.8 MB. Free memory was 116.0 MB in the beginning and 115.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:48:46,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.51 ms. Allocated memory is still 138.4 MB. Free memory was 113.7 MB in the beginning and 117.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.26 ms. Allocated memory is still 138.4 MB. Free memory was 117.0 MB in the beginning and 115.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.66 ms. Allocated memory is still 138.4 MB. Free memory was 115.9 MB in the beginning and 114.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 570.90 ms. Allocated memory is still 138.4 MB. Free memory was 114.8 MB in the beginning and 104.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 44060.55 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 104.4 MB in the beginning and 116.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.14 ms. Allocated memory is still 167.8 MB. Free memory was 116.0 MB in the beginning and 115.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + -2 * y + 1 and consists of 5 locations. One deterministic module has 2-nested ranking function (if 2 * z > 0 then 1 else 0), (if 2 * z > 0 then 2 * z else 2 * tx + 2 * z + 2147483647) and consists of 4 locations. One deterministic module has affine ranking function -2 * y + 2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2 * x + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 43.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.9s. Construction of modules took 0.1s. Büchi inclusion checks took 38.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 60 SDtfs, 60 SDslu, 8 SDs, 0 SdLazy, 39 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax159 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf94 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...