./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.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_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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 90c8922c67b3eb8c55716b63a408098d1b23a21e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:01:47,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:01:47,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:01:47,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:01:47,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:01:47,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:01:47,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:01:47,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:01:47,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:01:47,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:01:47,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:01:47,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:01:47,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:01:47,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:01:47,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:01:47,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:01:47,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:01:47,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:01:47,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:01:47,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:01:47,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:01:47,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:01:47,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:01:47,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:01:47,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:01:47,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:01:47,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:01:47,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:01:47,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:01:47,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:01:47,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:01:47,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:01:47,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:01:47,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:01:47,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:01:47,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:01:47,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:01:47,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:01:47,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:01:47,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:01:47,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:01:47,701 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:01:47,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:01:47,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:01:47,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:01:47,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:01:47,735 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:01:47,735 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:01:47,735 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:01:47,736 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:01:47,736 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:01:47,737 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:01:47,737 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:01:47,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:01:47,738 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:01:47,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:01:47,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:01:47,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:01:47,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:01:47,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:01:47,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:01:47,741 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:01:47,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:01:47,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:01:47,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:01:47,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:01:47,743 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:01:47,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:01:47,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:01:47,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:01:47,744 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:01:47,746 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:01:47,746 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_3e8a4972-4318-498f-8909-a463947d6efa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90c8922c67b3eb8c55716b63a408098d1b23a21e [2020-11-28 03:01:48,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:01:48,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:01:48,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:01:48,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:01:48,082 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:01:48,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c [2020-11-28 03:01:48,180 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/data/7d89ab227/6ad7c7d637a14d28bacddb553d7074f1/FLAGbf1657e2b [2020-11-28 03:01:48,771 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:01:48,772 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/sv-benchmarks/c/termination-restricted-15/c.01-no-inv.c [2020-11-28 03:01:48,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/data/7d89ab227/6ad7c7d637a14d28bacddb553d7074f1/FLAGbf1657e2b [2020-11-28 03:01:49,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/data/7d89ab227/6ad7c7d637a14d28bacddb553d7074f1 [2020-11-28 03:01:49,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:01:49,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:01:49,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:49,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:01:49,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:01:49,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e0c896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49, skipping insertion in model container [2020-11-28 03:01:49,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:01:49,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:01:49,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:49,380 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:01:49,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:49,432 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:01:49,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49 WrapperNode [2020-11-28 03:01:49,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:49,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:49,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:01:49,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:01:49,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:49,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:01:49,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:01:49,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:01:49,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (1/1) ... [2020-11-28 03:01:49,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:01:49,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:01:49,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:01:49,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:01:49,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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 [2020-11-28 03:01:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:01:49,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:01:49,791 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:01:49,792 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:01:49,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:49 BoogieIcfgContainer [2020-11-28 03:01:49,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:01:49,796 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:01:49,796 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:01:49,802 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:01:49,804 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:01:49,804 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:01:49" (1/3) ... [2020-11-28 03:01:49,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7383cd1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:01:49, skipping insertion in model container [2020-11-28 03:01:49,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:01:49,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:49" (2/3) ... [2020-11-28 03:01:49,807 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7383cd1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:01:49, skipping insertion in model container [2020-11-28 03:01:49,807 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:01:49,807 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:49" (3/3) ... [2020-11-28 03:01:49,809 INFO L373 chiAutomizerObserver]: Analyzing ICFG c.01-no-inv.c [2020-11-28 03:01:49,894 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:01:49,894 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:01:49,895 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:01:49,895 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:01:49,895 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:01:49,895 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:01:49,896 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:01:49,896 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:01:49,911 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 03:01:49,933 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:01:49,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:49,933 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:49,940 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:01:49,940 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:01:49,941 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:01:49,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 03:01:49,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:01:49,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:49,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:49,944 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:01:49,944 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:01:49,953 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L10-2true [2020-11-28 03:01:49,954 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~x~0 >= 0);main_~y~0 := 1; 3#L12-2true assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 10#L12-3true main_~x~0 := main_~x~0 - 1; 8#L10-2true [2020-11-28 03:01:49,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:49,964 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 03:01:49,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:49,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432417496] [2020-11-28 03:01:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:50,071 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:50,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:50,095 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:50,097 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-28 03:01:50,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:50,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894998390] [2020-11-28 03:01:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:50,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:50,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:50,123 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:50,125 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-11-28 03:01:50,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:50,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080891747] [2020-11-28 03:01:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:50,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:50,144 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:50,146 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:50,257 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2020-11-28 03:01:50,328 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:50,328 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:50,328 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:50,329 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:50,329 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:01:50,329 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:50,329 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:50,329 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:50,330 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration1_Loop [2020-11-28 03:01:50,330 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:50,330 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:50,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:50,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:50,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:50,532 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-11-28 03:01:50,681 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:50,682 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:50,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:50,720 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 [2020-11-28 03:01:50,732 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:50,732 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_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:50,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:50,783 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 [2020-11-28 03:01:50,788 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:50,789 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_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:50,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:50,839 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:50,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:01:50,896 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:50,955 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:01:50,958 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:50,958 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:50,958 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:50,958 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:50,959 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:01:50,959 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:50,959 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:50,959 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:50,959 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration1_Loop [2020-11-28 03:01:50,959 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:50,960 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:50,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:50,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:50,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:51,120 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:51,125 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:51,135 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 [2020-11-28 03:01:51,138 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:51,138 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:51,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:51,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:51,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:51,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:51,145 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:51,151 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:01:51,158 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:01:51,159 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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 [2020-11-28 03:01:51,169 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:01:51,170 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:01:51,171 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:01:51,172 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-11-28 03:01:51,219 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:01:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:51,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:01:51,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:51,296 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:01:51,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:51,340 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 [2020-11-28 03:01:51,342 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-28 03:01:51,425 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2020-11-28 03:01:51,426 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 [2020-11-28 03:01:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:01:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-28 03:01:51,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-28 03:01:51,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:51,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:01:51,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:51,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-28 03:01:51,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:51,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2020-11-28 03:01:51,435 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:01:51,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-28 03:01:51,441 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-28 03:01:51,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-28 03:01:51,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-28 03:01:51,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:01:51,442 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:01:51,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-28 03:01:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-11-28 03:01:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:01:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-11-28 03:01:51,474 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-28 03:01:51,474 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-28 03:01:51,474 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:01:51,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-11-28 03:01:51,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:01:51,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:51,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:51,476 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:01:51,476 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:01:51,476 INFO L794 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 74#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 70#L12-2 [2020-11-28 03:01:51,477 INFO L796 eck$LassoCheckResult]: Loop: 70#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 70#L12-2 [2020-11-28 03:01:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:51,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 03:01:51,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:51,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791916203] [2020-11-28 03:01:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:51,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:51,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:51,500 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:51,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:51,503 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-28 03:01:51,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:51,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380301365] [2020-11-28 03:01:51,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:51,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:51,530 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:51,532 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:51,534 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-28 03:01:51,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:51,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064671578] [2020-11-28 03:01:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:51,545 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:51,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:51,562 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:51,637 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:51,637 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:51,637 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:51,637 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:51,637 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:01:51,637 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:51,637 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:51,638 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:51,638 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration2_Lasso [2020-11-28 03:01:51,638 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:51,638 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:51,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:51,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:51,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:51,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:51,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:51,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:51,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:51,922 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:51,922 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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 [2020-11-28 03:01:51,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:51,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:01:51,940 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:51,940 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_3e8a4972-4318-498f-8909-a463947d6efa/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:51,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:51,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:01:51,984 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:51,984 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:52,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:52,014 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:52,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:01:52,086 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 [2020-11-28 03:01:52,141 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:01:52,144 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:52,144 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:52,144 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:52,144 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:52,145 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:01:52,145 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:52,145 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:52,145 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:52,145 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration2_Lasso [2020-11-28 03:01:52,145 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:52,145 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:52,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:52,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:52,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:52,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:52,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:52,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:52,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:52,333 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:52,334 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:52,344 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 [2020-11-28 03:01:52,346 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:52,346 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:52,346 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:52,347 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:52,359 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:01:52,359 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:52,367 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:52,416 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 [2020-11-28 03:01:52,418 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:52,419 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:52,419 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:52,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:52,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:52,420 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:52,420 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:52,422 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:52,473 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 [2020-11-28 03:01:52,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:52,476 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:52,476 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:52,476 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:52,476 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:52,477 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:52,477 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:52,480 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:52,539 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 [2020-11-28 03:01:52,541 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:52,541 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:52,541 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:52,541 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:52,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:52,542 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:52,543 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:01:52,546 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:52,598 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:01:52,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:52,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:52,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:52,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:52,617 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:01:52,617 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:52,644 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:01:52,767 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-11-28 03:01:52,767 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:52,815 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:52,843 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-28 03:01:52,843 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:01:52,843 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2020-11-28 03:01:52,890 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-28 03:01:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:52,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:01:52,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:52,943 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:01:52,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:52,944 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:01:52,944 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-28 03:01:52,991 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2020-11-28 03:01:52,992 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 [2020-11-28 03:01:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:01:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-28 03:01:52,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-28 03:01:52,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:52,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-28 03:01:52,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:52,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-28 03:01:52,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:52,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-11-28 03:01:52,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:01:52,996 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2020-11-28 03:01:52,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-28 03:01:52,996 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-28 03:01:52,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-11-28 03:01:52,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:01:52,997 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-11-28 03:01:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-11-28 03:01:52,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-11-28 03:01:52,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:01:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-11-28 03:01:52,998 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-28 03:01:52,998 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-28 03:01:52,998 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:01:52,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-11-28 03:01:52,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:01:52,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:52,999 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:53,000 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-28 03:01:53,000 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:01:53,000 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 131#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 128#L12-2 assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 129#L12-3 main_~x~0 := main_~x~0 - 1; 132#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 127#L12-2 [2020-11-28 03:01:53,000 INFO L796 eck$LassoCheckResult]: Loop: 127#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 127#L12-2 [2020-11-28 03:01:53,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:53,001 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2020-11-28 03:01:53,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:53,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876078849] [2020-11-28 03:01:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,028 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,030 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:53,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:53,031 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-11-28 03:01:53,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:53,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602723376] [2020-11-28 03:01:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,049 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:53,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:53,050 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2020-11-28 03:01:53,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:53,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433035228] [2020-11-28 03:01:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:53,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433035228] [2020-11-28 03:01:53,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681567942] [2020-11-28 03:01:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:53,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:01:53,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:53,216 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:53,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:53,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 03:01:53,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941306047] [2020-11-28 03:01:53,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:53,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:01:53,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:01:53,312 INFO L87 Difference]: Start difference. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 7 states. [2020-11-28 03:01:53,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:53,421 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2020-11-28 03:01:53,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:01:53,422 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2020-11-28 03:01:53,423 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:01:53,424 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 8 states and 10 transitions. [2020-11-28 03:01:53,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:01:53,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-28 03:01:53,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2020-11-28 03:01:53,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:01:53,424 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-28 03:01:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2020-11-28 03:01:53,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-28 03:01:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:01:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-28 03:01:53,426 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-28 03:01:53,426 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-28 03:01:53,426 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:01:53,426 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-28 03:01:53,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:01:53,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:53,427 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:53,427 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-11-28 03:01:53,427 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:01:53,428 INFO L794 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 184#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 181#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 182#L12-2 assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 186#L12-3 main_~x~0 := main_~x~0 - 1; 185#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 180#L12-2 [2020-11-28 03:01:53,428 INFO L796 eck$LassoCheckResult]: Loop: 180#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 180#L12-2 [2020-11-28 03:01:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:53,428 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2020-11-28 03:01:53,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:53,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729143923] [2020-11-28 03:01:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,445 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,470 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:53,471 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 3 times [2020-11-28 03:01:53,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:53,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117908643] [2020-11-28 03:01:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,479 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:53,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:53,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 3 times [2020-11-28 03:01:53,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:53,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123371786] [2020-11-28 03:01:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:53,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123371786] [2020-11-28 03:01:53,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938443153] [2020-11-28 03:01:53,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:53,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 03:01:53,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:53,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:01:53,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:53,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:53,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:53,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 03:01:53,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203650486] [2020-11-28 03:01:53,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:01:53,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:01:53,693 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 8 states. [2020-11-28 03:01:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:53,799 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-11-28 03:01:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:01:53,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2020-11-28 03:01:53,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:01:53,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 12 transitions. [2020-11-28 03:01:53,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-28 03:01:53,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-28 03:01:53,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2020-11-28 03:01:53,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:01:53,804 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-28 03:01:53,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2020-11-28 03:01:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2020-11-28 03:01:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 03:01:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2020-11-28 03:01:53,806 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-28 03:01:53,806 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-28 03:01:53,806 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:01:53,806 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2020-11-28 03:01:53,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:01:53,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:53,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:53,807 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2020-11-28 03:01:53,808 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:01:53,808 INFO L794 eck$LassoCheckResult]: Stem: 241#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 242#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 239#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 240#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 245#L12-2 assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 244#L12-3 main_~x~0 := main_~x~0 - 1; 243#L10-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 238#L12-2 [2020-11-28 03:01:53,808 INFO L796 eck$LassoCheckResult]: Loop: 238#L12-2 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 238#L12-2 [2020-11-28 03:01:53,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:53,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1360231782, now seen corresponding path program 4 times [2020-11-28 03:01:53,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:53,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328479818] [2020-11-28 03:01:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,836 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:53,837 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 4 times [2020-11-28 03:01:53,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:53,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992462764] [2020-11-28 03:01:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,844 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:53,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:53,845 INFO L82 PathProgramCache]: Analyzing trace with hash 782487737, now seen corresponding path program 5 times [2020-11-28 03:01:53,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:53,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472897107] [2020-11-28 03:01:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,875 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:53,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:53,926 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:54,072 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:54,072 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:54,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:54,073 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:54,073 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:01:54,073 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:54,073 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:54,073 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:54,073 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration5_Lasso [2020-11-28 03:01:54,073 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:54,073 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:54,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,280 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:54,280 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:54,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:54,298 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:54,303 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:54,303 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:54,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:54,352 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:54,356 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:54,356 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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 [2020-11-28 03:01:54,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:54,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:01:54,415 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:54,415 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:54,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:54,463 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:54,468 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:54,468 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_3e8a4972-4318-498f-8909-a463947d6efa/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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:54,514 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:54,514 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:54,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:01:54,572 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 [2020-11-28 03:01:54,627 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:01:54,629 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:54,630 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:54,630 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:54,630 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:54,630 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:01:54,630 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:54,630 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:54,630 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:54,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv.c_Iteration5_Lasso [2020-11-28 03:01:54,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:54,631 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:54,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:54,806 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:54,807 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:54,811 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 [2020-11-28 03:01:54,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:54,812 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:54,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:54,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:54,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:54,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:54,814 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:01:54,816 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:54,849 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 [2020-11-28 03:01:54,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:54,851 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:54,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:54,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:54,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:54,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:54,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:01:54,853 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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 [2020-11-28 03:01:54,881 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 [2020-11-28 03:01:54,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:54,883 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:54,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:54,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:54,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:54,884 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:54,884 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:01:54,895 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:54,927 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 [2020-11-28 03:01:54,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:54,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:54,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:54,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:54,933 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:01:54,933 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:01:54,942 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:54,971 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 [2020-11-28 03:01:54,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:54,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:54,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:54,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:54,978 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:01:54,979 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:01:54,999 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) [2020-11-28 03:01:55,045 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 [2020-11-28 03:01:55,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:55,047 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:55,047 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:55,047 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:55,050 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:01:55,050 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:01:55,055 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:55,090 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 [2020-11-28 03:01:55,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:55,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:55,092 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:55,092 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:55,099 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:01:55,099 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:01:55,127 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:01:55,153 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-28 03:01:55,153 INFO L444 ModelExtractionUtils]: 1 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e8a4972-4318-498f-8909-a463947d6efa/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) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:55,157 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:01:55,160 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-28 03:01:55,160 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:01:55,160 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 2147483647*ULTIMATE.start_main_~x~0 - 2147483648*ULTIMATE.start_main_~y~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2020-11-28 03:01:55,211 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-28 03:01:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:55,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:01:55,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:55,279 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:01:55,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:55,280 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:01:55,280 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-28 03:01:55,326 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 15 states and 19 transitions. Complement of second has 5 states. [2020-11-28 03:01:55,327 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 [2020-11-28 03:01:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:01:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-28 03:01:55,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-28 03:01:55,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:55,328 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:01:55,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:55,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:01:55,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:55,383 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:01:55,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:55,384 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:01:55,384 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-28 03:01:55,421 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 15 states and 19 transitions. Complement of second has 5 states. [2020-11-28 03:01:55,422 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 [2020-11-28 03:01:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:01:55,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-28 03:01:55,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-28 03:01:55,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:55,422 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:01:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:55,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:01:55,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:55,476 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:01:55,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:55,477 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:01:55,477 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-28 03:01:55,531 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 13 transitions. Complement of second has 4 states. [2020-11-28 03:01:55,531 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 [2020-11-28 03:01:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:01:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:01:55,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-28 03:01:55,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:55,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2020-11-28 03:01:55,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:55,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-28 03:01:55,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:55,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2020-11-28 03:01:55,533 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:01:55,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-11-28 03:01:55,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:01:55,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:01:55,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:01:55,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:01:55,534 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:01:55,534 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:01:55,534 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:01:55,534 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:01:55,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:01:55,534 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:01:55,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:01:55,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:01:55 BoogieIcfgContainer [2020-11-28 03:01:55,540 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:01:55,541 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:01:55,541 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:01:55,541 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:01:55,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:49" (3/4) ... [2020-11-28 03:01:55,545 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:01:55,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:01:55,546 INFO L168 Benchmark]: Toolchain (without parser) took 6413.61 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 60.1 MB in the beginning and 55.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:55,547 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 69.2 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:55,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.68 ms. Allocated memory is still 92.3 MB. Free memory was 60.0 MB in the beginning and 71.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:55,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.06 ms. Allocated memory is still 92.3 MB. Free memory was 71.0 MB in the beginning and 70.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:55,549 INFO L168 Benchmark]: Boogie Preprocessor took 25.84 ms. Allocated memory is still 92.3 MB. Free memory was 70.0 MB in the beginning and 68.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:55,549 INFO L168 Benchmark]: RCFGBuilder took 288.46 ms. Allocated memory is still 92.3 MB. Free memory was 68.8 MB in the beginning and 60.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:55,550 INFO L168 Benchmark]: BuchiAutomizer took 5744.33 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 60.6 MB in the beginning and 56.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:55,551 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 115.3 MB. Free memory was 56.7 MB in the beginning and 55.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:55,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 69.2 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.68 ms. Allocated memory is still 92.3 MB. Free memory was 60.0 MB in the beginning and 71.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.06 ms. Allocated memory is still 92.3 MB. Free memory was 71.0 MB in the beginning and 70.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.84 ms. Allocated memory is still 92.3 MB. Free memory was 70.0 MB in the beginning and 68.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 288.46 ms. Allocated memory is still 92.3 MB. Free memory was 68.8 MB in the beginning and 60.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5744.33 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 60.6 MB in the beginning and 56.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.44 ms. Allocated memory is still 115.3 MB. Free memory was 56.7 MB in the beginning and 55.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. One nondeterministic module has affine ranking function 2147483647 * x + -2147483648 * y and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.6s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 4.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 21 SDtfs, 27 SDslu, 9 SDs, 0 SdLazy, 80 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax157 hnf97 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf93 smp100 dnf100 smp100 tf102 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...