./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF --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 e4b41eab3134232576005c452e063ce9699dbf2a52c4538827c4a32ddc3b6274 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:12:03,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:12:03,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:12:03,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:12:03,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:12:03,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:12:03,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:12:03,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:12:03,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:12:03,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:12:03,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:12:03,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:12:03,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:12:03,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:12:03,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:12:03,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:12:03,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:12:03,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:12:03,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:12:03,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:12:03,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:12:03,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:12:03,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:12:03,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:12:03,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:12:03,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:12:03,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:12:03,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:12:03,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:12:03,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:12:03,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:12:03,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:12:03,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:12:03,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:12:03,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:12:03,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:12:03,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:12:03,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:12:03,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:12:03,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:12:03,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:12:03,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 07:12:03,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:12:03,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:12:03,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:12:03,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:12:03,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:12:03,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:12:03,697 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:12:03,698 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 07:12:03,698 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 07:12:03,698 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 07:12:03,699 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 07:12:03,700 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 07:12:03,700 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 07:12:03,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:12:03,701 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:12:03,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:12:03,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:12:03,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 07:12:03,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 07:12:03,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 07:12:03,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:12:03,702 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 07:12:03,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:12:03,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 07:12:03,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:12:03,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:12:03,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:12:03,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:12:03,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:12:03,707 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 07:12:03,708 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_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b41eab3134232576005c452e063ce9699dbf2a52c4538827c4a32ddc3b6274 [2021-11-20 07:12:04,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:12:04,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:12:04,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:12:04,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:12:04,136 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:12:04,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-restricted-15/c.08.c [2021-11-20 07:12:04,239 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/data/add3bdce1/18a89837aaa74a81ac448c436cc534c3/FLAG27e5fad95 [2021-11-20 07:12:04,788 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:12:04,788 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/sv-benchmarks/c/termination-restricted-15/c.08.c [2021-11-20 07:12:04,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/data/add3bdce1/18a89837aaa74a81ac448c436cc534c3/FLAG27e5fad95 [2021-11-20 07:12:05,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/data/add3bdce1/18a89837aaa74a81ac448c436cc534c3 [2021-11-20 07:12:05,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:12:05,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:12:05,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:12:05,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:12:05,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:12:05,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485f922c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05, skipping insertion in model container [2021-11-20 07:12:05,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:12:05,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:12:05,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:12:05,405 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:12:05,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:12:05,432 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:12:05,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05 WrapperNode [2021-11-20 07:12:05,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:12:05,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:12:05,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:12:05,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:12:05,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,468 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-11-20 07:12:05,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:12:05,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:12:05,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:12:05,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:12:05,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:12:05,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:12:05,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:12:05,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:12:05,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (1/1) ... [2021-11-20 07:12:05,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:05,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:05,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:05,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 07:12:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:12:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:12:05,649 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:12:05,651 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:12:05,734 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:12:05,742 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:12:05,742 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 07:12:05,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:12:05 BoogieIcfgContainer [2021-11-20 07:12:05,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:12:05,745 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 07:12:05,746 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 07:12:05,749 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 07:12:05,750 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:12:05,751 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 07:12:05" (1/3) ... [2021-11-20 07:12:05,752 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51e24be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:12:05, skipping insertion in model container [2021-11-20 07:12:05,753 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:12:05,753 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:12:05" (2/3) ... [2021-11-20 07:12:05,753 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51e24be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:12:05, skipping insertion in model container [2021-11-20 07:12:05,753 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:12:05,754 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:12:05" (3/3) ... [2021-11-20 07:12:05,755 INFO L388 chiAutomizerObserver]: Analyzing ICFG c.08.c [2021-11-20 07:12:05,812 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 07:12:05,812 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 07:12:05,813 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 07:12:05,813 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 07:12:05,813 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 07:12:05,813 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 07:12:05,813 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 07:12:05,813 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 07:12:05,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:05,849 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 07:12:05,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:12:05,849 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:12:05,855 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 07:12:05,855 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 07:12:05,855 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 07:12:05,855 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:05,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-20 07:12:05,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:12:05,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:12:05,857 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 07:12:05,857 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 07:12:05,863 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 5#L10-2true [2021-11-20 07:12:05,863 INFO L793 eck$LassoCheckResult]: Loop: 5#L10-2true assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 3#L12-2true assume !(main_~j~0#1 <= main_~i~0#1 - 1); 8#L12-3true main_~i~0#1 := main_~i~0#1 - 1; 5#L10-2true [2021-11-20 07:12:05,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:05,870 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-20 07:12:05,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:05,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847987674] [2021-11-20 07:12:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:05,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:05,960 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:12:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:05,983 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:12:05,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2021-11-20 07:12:05,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:05,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597460298] [2021-11-20 07:12:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:05,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:06,004 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:12:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:06,011 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:12:06,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:06,014 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2021-11-20 07:12:06,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:06,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59500755] [2021-11-20 07:12:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:06,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:06,024 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:12:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:06,034 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:12:06,124 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:12:06,124 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:12:06,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:12:06,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:12:06,125 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:12:06,125 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:06,125 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:12:06,126 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:12:06,126 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2021-11-20 07:12:06,126 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:12:06,126 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:12:06,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:06,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:06,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:06,291 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:12:06,292 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:12:06,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:06,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:06,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:06,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:12:06,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:12:06,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 07:12:06,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:12:06,368 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: [] [2021-11-20 07:12:06,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-11-20 07:12:06,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:06,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:06,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:06,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 07:12:06,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:12:06,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:12:06,444 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:12:06,444 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: [] [2021-11-20 07:12:06,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:06,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:06,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:06,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:06,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 07:12:06,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:12:06,486 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:12:06,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:06,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:06,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:06,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:06,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:12:06,581 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:12:06,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 07:12:06,662 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:12:06,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:06,667 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:12:06,667 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:12:06,667 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:12:06,668 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:12:06,668 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:12:06,668 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:06,668 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:12:06,668 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:12:06,668 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2021-11-20 07:12:06,668 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:12:06,668 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:12:06,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:06,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:06,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:06,788 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:12:06,794 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:12:06,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:06,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:06,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:06,807 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:12:06,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:12:06,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:12:06,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:12:06,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:12:06,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 07:12:06,834 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 07:12:06,834 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 07:12:06,851 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:12:06,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:06,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:06,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:06,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:06,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-20 07:12:06,898 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:12:06,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:12:06,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:12:06,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:12:06,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:12:06,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:12:06,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:12:06,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:12:06,947 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:12:06,952 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 07:12:06,953 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 07:12:06,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:06,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:06,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:06,966 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:12:06,966 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:12:06,967 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:12:06,967 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-11-20 07:12:06,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-20 07:12:06,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:06,999 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:12:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:07,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:12:07,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:07,073 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:12:07,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:07,155 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 [2021-11-20 07:12:07,157 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:07,210 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2021-11-20 07:12:07,212 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 [2021-11-20 07:12:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-11-20 07:12:07,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2021-11-20 07:12:07,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:07,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-20 07:12:07,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:07,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2021-11-20 07:12:07,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:07,223 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2021-11-20 07:12:07,226 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 07:12:07,230 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2021-11-20 07:12:07,232 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-11-20 07:12:07,232 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-11-20 07:12:07,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-11-20 07:12:07,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:12:07,233 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-11-20 07:12:07,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-11-20 07:12:07,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-11-20 07:12:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-11-20 07:12:07,263 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-11-20 07:12:07,263 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-11-20 07:12:07,263 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 07:12:07,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-11-20 07:12:07,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 07:12:07,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:12:07,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:12:07,266 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-20 07:12:07,267 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 07:12:07,267 INFO L791 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 81#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 78#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 75#L12-2 [2021-11-20 07:12:07,267 INFO L793 eck$LassoCheckResult]: Loop: 75#L12-2 assume !!(main_~j~0#1 <= main_~i~0#1 - 1);main_~j~0#1 := 1 + main_~j~0#1; 75#L12-2 [2021-11-20 07:12:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-11-20 07:12:07,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:07,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716415876] [2021-11-20 07:12:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:07,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:07,279 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:12:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:07,284 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:12:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-11-20 07:12:07,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:07,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568501032] [2021-11-20 07:12:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:07,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:07,291 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:12:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:07,296 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:12:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2021-11-20 07:12:07,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:07,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714682111] [2021-11-20 07:12:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:07,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:07,307 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:12:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:07,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:12:07,340 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:12:07,340 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:12:07,340 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:12:07,340 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:12:07,340 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:12:07,342 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:07,342 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:12:07,342 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:12:07,342 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2021-11-20 07:12:07,347 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:12:07,347 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:12:07,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:07,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:07,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:07,422 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:12:07,423 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:12:07,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:07,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:07,429 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:07,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-20 07:12:07,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:12:07,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:12:07,472 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:12:07,472 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: [] [2021-11-20 07:12:07,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:07,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:07,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:07,520 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:07,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:12:07,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:12:07,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-20 07:12:07,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:07,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:07,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:07,583 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:07,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-20 07:12:07,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:12:07,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:12:07,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-11-20 07:12:07,854 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:12:07,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:07,857 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:12:07,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:12:07,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:12:07,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:12:07,858 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:12:07,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:07,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:12:07,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:12:07,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2021-11-20 07:12:07,858 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:12:07,858 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:12:07,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:07,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:07,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:07,922 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:12:07,922 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:12:07,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:07,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:07,923 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:07,930 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:12:07,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:12:07,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:12:07,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:12:07,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:12:07,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-20 07:12:07,946 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 07:12:07,946 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 07:12:07,969 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:12:08,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:08,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:08,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:08,015 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:08,026 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:12:08,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:12:08,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:12:08,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:12:08,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:12:08,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:12:08,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:12:08,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:12:08,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-20 07:12:08,053 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:12:08,070 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-20 07:12:08,070 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 07:12:08,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:08,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:08,071 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:08,083 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:12:08,084 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:12:08,084 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:12:08,084 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-11-20 07:12:08,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-20 07:12:08,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:08,117 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:12:08,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:12:08,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,162 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:12:08,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:08,163 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 [2021-11-20 07:12:08,163 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:08,179 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 19 transitions. Complement of second has 5 states. [2021-11-20 07:12:08,182 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 [2021-11-20 07:12:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-11-20 07:12:08,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2021-11-20 07:12:08,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:08,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2021-11-20 07:12:08,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:08,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-11-20 07:12:08,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:08,185 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-11-20 07:12:08,186 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 07:12:08,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2021-11-20 07:12:08,187 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-11-20 07:12:08,187 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-11-20 07:12:08,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2021-11-20 07:12:08,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:12:08,188 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-11-20 07:12:08,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2021-11-20 07:12:08,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2021-11-20 07:12:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-11-20 07:12:08,190 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-11-20 07:12:08,190 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-11-20 07:12:08,190 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 07:12:08,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2021-11-20 07:12:08,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 07:12:08,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:12:08,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:12:08,191 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-11-20 07:12:08,192 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 07:12:08,192 INFO L791 eck$LassoCheckResult]: Stem: 133#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 134#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 131#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 129#L12-2 assume !(main_~j~0#1 <= main_~i~0#1 - 1); 130#L12-3 main_~i~0#1 := main_~i~0#1 - 1; 132#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 128#L12-2 [2021-11-20 07:12:08,192 INFO L793 eck$LassoCheckResult]: Loop: 128#L12-2 assume !!(main_~j~0#1 <= main_~i~0#1 - 1);main_~j~0#1 := 1 + main_~j~0#1; 128#L12-2 [2021-11-20 07:12:08,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:08,193 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2021-11-20 07:12:08,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:08,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119998600] [2021-11-20 07:12:08,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:08,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:08,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:08,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119998600] [2021-11-20 07:12:08,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119998600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:08,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:08,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:12:08,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169111739] [2021-11-20 07:12:08,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:08,299 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 07:12:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2021-11-20 07:12:08,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:08,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903077052] [2021-11-20 07:12:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:08,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:08,305 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:12:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:12:08,309 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:12:08,324 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:12:08,324 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:12:08,325 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:12:08,325 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:12:08,325 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:12:08,325 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:08,325 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:12:08,325 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:12:08,325 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2021-11-20 07:12:08,326 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:12:08,326 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:12:08,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:08,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:08,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:08,381 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:12:08,381 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:12:08,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:08,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:08,385 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:08,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-20 07:12:08,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:12:08,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:12:08,424 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:12:08,424 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:12:08,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-11-20 07:12:08,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:08,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:08,454 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:08,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-20 07:12:08,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:12:08,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:12:08,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:08,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:08,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:08,496 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:08,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-20 07:12:08,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:12:08,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:12:08,656 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:12:08,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:08,660 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:12:08,660 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:12:08,660 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:12:08,660 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:12:08,660 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:12:08,661 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:08,661 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:12:08,661 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:12:08,661 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2021-11-20 07:12:08,661 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:12:08,661 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:12:08,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:08,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:08,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:12:08,749 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:12:08,749 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:12:08,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:08,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:08,753 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:08,761 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:12:08,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:12:08,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:12:08,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:12:08,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:12:08,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:12:08,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:12:08,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:12:08,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-20 07:12:08,789 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:12:08,795 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 07:12:08,795 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 07:12:08,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:12:08,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:12:08,798 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:12:08,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-20 07:12:08,800 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:12:08,800 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:12:08,800 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:12:08,800 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-11-20 07:12:08,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:08,829 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:12:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:12:08,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,881 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:12:08,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:08,882 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 [2021-11-20 07:12:08,883 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:08,896 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2021-11-20 07:12:08,897 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 [2021-11-20 07:12:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-11-20 07:12:08,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2021-11-20 07:12:08,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:08,899 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:12:08,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:12:08,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,938 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:12:08,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:08,939 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 [2021-11-20 07:12:08,940 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:08,959 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2021-11-20 07:12:08,961 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 [2021-11-20 07:12:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-11-20 07:12:08,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2021-11-20 07:12:08,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:08,963 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:12:08,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:08,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:12:08,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:09,007 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:12:09,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:12:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:12:09,008 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 [2021-11-20 07:12:09,009 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:09,028 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 12 transitions. Complement of second has 4 states. [2021-11-20 07:12:09,029 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 [2021-11-20 07:12:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-11-20 07:12:09,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 1 letters. [2021-11-20 07:12:09,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:09,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2021-11-20 07:12:09,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:09,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2021-11-20 07:12:09,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:12:09,032 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2021-11-20 07:12:09,033 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 07:12:09,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2021-11-20 07:12:09,033 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 07:12:09,034 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 07:12:09,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 07:12:09,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:09,034 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:12:09,034 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:12:09,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:09,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:12:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:12:09,040 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:09,043 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-11-20 07:12:09,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:12:09,044 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-11-20 07:12:09,045 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 07:12:09,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 07:12:09,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 07:12:09,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 07:12:09,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 07:12:09,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:12:09,046 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:12:09,046 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:12:09,046 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:12:09,046 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 07:12:09,046 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:12:09,046 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 07:12:09,047 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-20 07:12:09,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 07:12:09 BoogieIcfgContainer [2021-11-20 07:12:09,056 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 07:12:09,056 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:12:09,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:12:09,057 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:12:09,057 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:12:05" (3/4) ... [2021-11-20 07:12:09,061 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:12:09,061 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:12:09,063 INFO L158 Benchmark]: Toolchain (without parser) took 3920.04ms. Allocated memory is still 140.5MB. Free memory was 107.0MB in the beginning and 77.7MB in the end (delta: 29.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2021-11-20 07:12:09,063 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 49.4MB in the beginning and 49.4MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:12:09,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.75ms. Allocated memory is still 140.5MB. Free memory was 106.6MB in the beginning and 116.9MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:12:09,065 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.53ms. Allocated memory is still 140.5MB. Free memory was 116.9MB in the beginning and 115.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:12:09,066 INFO L158 Benchmark]: Boogie Preprocessor took 19.81ms. Allocated memory is still 140.5MB. Free memory was 115.5MB in the beginning and 114.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:12:09,066 INFO L158 Benchmark]: RCFGBuilder took 253.90ms. Allocated memory is still 140.5MB. Free memory was 114.5MB in the beginning and 106.6MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:12:09,067 INFO L158 Benchmark]: BuchiAutomizer took 3310.23ms. Allocated memory is still 140.5MB. Free memory was 106.1MB in the beginning and 78.4MB in the end (delta: 27.7MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2021-11-20 07:12:09,068 INFO L158 Benchmark]: Witness Printer took 5.26ms. Allocated memory is still 140.5MB. Free memory was 78.4MB in the beginning and 77.7MB in the end (delta: 719.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:12:09,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 49.4MB in the beginning and 49.4MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.75ms. Allocated memory is still 140.5MB. Free memory was 106.6MB in the beginning and 116.9MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.53ms. Allocated memory is still 140.5MB. Free memory was 116.9MB in the beginning and 115.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.81ms. Allocated memory is still 140.5MB. Free memory was 115.5MB in the beginning and 114.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 253.90ms. Allocated memory is still 140.5MB. Free memory was 114.5MB in the beginning and 106.6MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3310.23ms. Allocated memory is still 140.5MB. Free memory was 106.1MB in the beginning and 78.4MB in the end (delta: 27.7MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * Witness Printer took 5.26ms. Allocated memory is still 140.5MB. Free memory was 78.4MB in the beginning and 77.7MB in the end (delta: 719.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One nondeterministic module has affine ranking function -1 * j + i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 20 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax188 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp96 dnf100 smp100 tf110 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 56ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-20 07:12:09,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-20 07:12:09,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-11-20 07:12:09,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2c1192-1270-4c6f-ab4f-70207cb8d405/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE