./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa --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 e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:31:51,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:31:51,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:31:51,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:31:51,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:31:51,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:31:51,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:31:51,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:31:51,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:31:51,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:31:51,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:31:51,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:31:51,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:31:51,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:31:51,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:31:51,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:31:51,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:31:51,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:31:51,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:31:51,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:31:51,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:31:51,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:31:51,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:31:51,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:31:51,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:31:51,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:31:51,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:31:51,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:31:51,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:31:51,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:31:51,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:31:51,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:31:51,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:31:51,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:31:51,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:31:51,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:31:51,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:31:51,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:31:51,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:31:51,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:31:51,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:31:51,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-07 00:31:51,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:31:51,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:31:51,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:31:51,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:31:51,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:31:51,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:31:51,667 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:31:51,667 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-07 00:31:51,667 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-07 00:31:51,667 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-07 00:31:51,668 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-07 00:31:51,668 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-07 00:31:51,668 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-07 00:31:51,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:31:51,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:31:51,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:31:51,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:31:51,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-07 00:31:51,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-07 00:31:51,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-07 00:31:51,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:31:51,670 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-07 00:31:51,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:31:51,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-07 00:31:51,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:31:51,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:31:51,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:31:51,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:31:51,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:31:51,672 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-07 00:31:51,672 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_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 [2021-12-07 00:31:51,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:31:51,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:31:51,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:31:51,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:31:51,872 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:31:51,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-restricted-15/Ex08.c [2021-12-07 00:31:51,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/data/2c95a350d/b44516f9c5524d2eb53888697bc82757/FLAG5e1144b7f [2021-12-07 00:31:52,281 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:31:52,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/sv-benchmarks/c/termination-restricted-15/Ex08.c [2021-12-07 00:31:52,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/data/2c95a350d/b44516f9c5524d2eb53888697bc82757/FLAG5e1144b7f [2021-12-07 00:31:52,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/data/2c95a350d/b44516f9c5524d2eb53888697bc82757 [2021-12-07 00:31:52,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:31:52,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:31:52,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:31:52,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:31:52,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:31:52,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7105d39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52, skipping insertion in model container [2021-12-07 00:31:52,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:31:52,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:31:52,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:31:52,429 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:31:52,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:31:52,448 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:31:52,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52 WrapperNode [2021-12-07 00:31:52,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:31:52,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:31:52,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:31:52,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:31:52,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,472 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-07 00:31:52,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:31:52,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:31:52,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:31:52,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:31:52,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:31:52,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:31:52,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:31:52,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:31:52,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (1/1) ... [2021-12-07 00:31:52,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:52,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:52,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:52,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-07 00:31:52,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:31:52,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:31:52,591 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:31:52,593 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:31:52,640 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:31:52,647 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:31:52,647 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:31:52,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:31:52 BoogieIcfgContainer [2021-12-07 00:31:52,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:31:52,650 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-07 00:31:52,650 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-07 00:31:52,653 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-07 00:31:52,654 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:31:52,654 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:31:52" (1/3) ... [2021-12-07 00:31:52,654 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30935cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:31:52, skipping insertion in model container [2021-12-07 00:31:52,655 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:31:52,655 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:31:52" (2/3) ... [2021-12-07 00:31:52,655 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30935cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:31:52, skipping insertion in model container [2021-12-07 00:31:52,655 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 00:31:52,655 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:31:52" (3/3) ... [2021-12-07 00:31:52,656 INFO L388 chiAutomizerObserver]: Analyzing ICFG Ex08.c [2021-12-07 00:31:52,692 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-07 00:31:52,692 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-07 00:31:52,692 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-07 00:31:52,693 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-07 00:31:52,693 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-07 00:31:52,693 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-07 00:31:52,693 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-07 00:31:52,693 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-07 00:31:52,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-12-07 00:31:52,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-07 00:31:52,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:52,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:52,726 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:31:52,726 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-07 00:31:52,726 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-07 00:31:52,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-12-07 00:31:52,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-07 00:31:52,728 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:52,728 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:52,728 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:31:52,728 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-07 00:31:52,734 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 6#L18-1true [2021-12-07 00:31:52,734 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(main_~i~0#1 > 0); 11#L12true assume !(1 == main_~i~0#1); 3#L12-2true assume 10 == main_~i~0#1;main_~up~0#1 := 0; 8#L15-1true assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6#L18-1true [2021-12-07 00:31:52,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-07 00:31:52,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:52,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132584048] [2021-12-07 00:31:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:52,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:52,808 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:52,822 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2021-12-07 00:31:52,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:52,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728922691] [2021-12-07 00:31:52,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:52,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:52,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:52,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728922691] [2021-12-07 00:31:52,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728922691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:52,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:52,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:31:52,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864260243] [2021-12-07 00:31:52,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:52,889 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-07 00:31:52,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:52,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:31:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:31:52,918 INFO L87 Difference]: Start difference. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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, 2 states have (on average 2.0) internal successors, (4), 3 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) [2021-12-07 00:31:52,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:52,938 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-12-07 00:31:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:31:52,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2021-12-07 00:31:52,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-07 00:31:52,950 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 10 states and 15 transitions. [2021-12-07 00:31:52,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-07 00:31:52,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-07 00:31:52,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2021-12-07 00:31:52,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:31:52,952 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-12-07 00:31:52,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2021-12-07 00:31:52,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-07 00:31:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 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) [2021-12-07 00:31:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2021-12-07 00:31:52,973 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-12-07 00:31:52,974 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-12-07 00:31:52,974 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-07 00:31:52,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2021-12-07 00:31:52,974 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-07 00:31:52,974 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:52,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:52,975 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:31:52,975 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-07 00:31:52,975 INFO L791 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 41#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 44#L18-1 [2021-12-07 00:31:52,975 INFO L793 eck$LassoCheckResult]: Loop: 44#L18-1 assume !!(main_~i~0#1 > 0); 46#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 37#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 38#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 44#L18-1 [2021-12-07 00:31:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-07 00:31:52,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:52,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513065481] [2021-12-07 00:31:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:52,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:52,981 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:52,984 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:52,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1265324, now seen corresponding path program 1 times [2021-12-07 00:31:52,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:52,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700098507] [2021-12-07 00:31:52,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:52,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:53,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:53,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700098507] [2021-12-07 00:31:53,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700098507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:53,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:53,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:31:53,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904796330] [2021-12-07 00:31:53,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:53,006 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-07 00:31:53,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:31:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:31:53,007 INFO L87 Difference]: Start difference. First operand 10 states and 15 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2021-12-07 00:31:53,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:53,029 INFO L93 Difference]: Finished difference Result 14 states and 21 transitions. [2021-12-07 00:31:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:31:53,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 21 transitions. [2021-12-07 00:31:53,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-07 00:31:53,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 21 transitions. [2021-12-07 00:31:53,034 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-12-07 00:31:53,034 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-12-07 00:31:53,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2021-12-07 00:31:53,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:31:53,034 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2021-12-07 00:31:53,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2021-12-07 00:31:53,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-07 00:31:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 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) [2021-12-07 00:31:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2021-12-07 00:31:53,038 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2021-12-07 00:31:53,038 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2021-12-07 00:31:53,038 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-07 00:31:53,039 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2021-12-07 00:31:53,039 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-07 00:31:53,039 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:53,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:53,040 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-07 00:31:53,040 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-07 00:31:53,040 INFO L791 eck$LassoCheckResult]: Stem: 69#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 70#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 74#L18-1 [2021-12-07 00:31:53,040 INFO L793 eck$LassoCheckResult]: Loop: 74#L18-1 assume !!(main_~i~0#1 > 0); 80#L12 assume !(1 == main_~i~0#1); 79#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 73#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 74#L18-1 [2021-12-07 00:31:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:53,041 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-07 00:31:53,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:53,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875137732] [2021-12-07 00:31:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:53,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,047 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,050 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:53,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1267246, now seen corresponding path program 1 times [2021-12-07 00:31:53,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:53,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411513201] [2021-12-07 00:31:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:53,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,067 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,074 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:53,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:53,080 INFO L85 PathProgramCache]: Analyzing trace with hash 889694448, now seen corresponding path program 1 times [2021-12-07 00:31:53,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:53,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734997119] [2021-12-07 00:31:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:53,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,089 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,095 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:53,139 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:53,140 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:53,140 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:53,140 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:53,140 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:31:53,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:53,141 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:53,141 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2021-12-07 00:31:53,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:53,141 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:53,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,216 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:53,217 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:31:53,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-07 00:31:53,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:53,222 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:53,242 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:53,243 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: [] [2021-12-07 00:31:53,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:53,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-07 00:31:53,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:53,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:53,278 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:53,278 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: [] [2021-12-07 00:31:53,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-07 00:31:53,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-07 00:31:53,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:53,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:53,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-07 00:31:53,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-07 00:31:53,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:31:53,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:53,338 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:31:53,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-07 00:31:53,357 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:53,357 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:53,357 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:53,357 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:53,357 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:31:53,357 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,357 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:53,357 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:53,357 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2021-12-07 00:31:53,357 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:53,357 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:53,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,397 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:53,402 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:31:53,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-07 00:31:53,407 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 [2021-12-07 00:31:53,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:53,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:53,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:53,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:53,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:53,419 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:31:53,419 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:53,421 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:53,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-07 00:31:53,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-07 00:31:53,447 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 [2021-12-07 00:31:53,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:53,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:53,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:53,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:53,457 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:31:53,457 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:31:53,460 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:53,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-07 00:31:53,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-07 00:31:53,481 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 [2021-12-07 00:31:53,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:53,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:53,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:53,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:53,491 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:31:53,491 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:31:53,494 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:53,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-07 00:31:53,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-07 00:31:53,514 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 [2021-12-07 00:31:53,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:53,521 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:53,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:53,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:53,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:53,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:31:53,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:53,524 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:31:53,528 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:31:53,528 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-07 00:31:53,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-07 00:31:53,531 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:31:53,531 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:31:53,531 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:31:53,532 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-07 00:31:53,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-07 00:31:53,553 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:31:53,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:53,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:53,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:53,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:31:53,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:53,608 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 [2021-12-07 00:31:53,608 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-12-07 00:31:53,646 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) Result 35 states and 51 transitions. Complement of second has 7 states. [2021-12-07 00:31:53,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-12-07 00:31:53,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-12-07 00:31:53,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-07 00:31:53,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:53,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-07 00:31:53,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:53,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-07 00:31:53,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:53,651 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 51 transitions. [2021-12-07 00:31:53,653 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2021-12-07 00:31:53,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 30 states and 44 transitions. [2021-12-07 00:31:53,654 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-12-07 00:31:53,654 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-12-07 00:31:53,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 44 transitions. [2021-12-07 00:31:53,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:53,654 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-12-07 00:31:53,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 44 transitions. [2021-12-07 00:31:53,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-12-07 00:31:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 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) [2021-12-07 00:31:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2021-12-07 00:31:53,657 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-12-07 00:31:53,657 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-12-07 00:31:53,657 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-07 00:31:53,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 36 transitions. [2021-12-07 00:31:53,658 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-12-07 00:31:53,658 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:53,658 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:53,658 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-07 00:31:53,658 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-07 00:31:53,658 INFO L791 eck$LassoCheckResult]: Stem: 167#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 168#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 170#L18-1 assume !!(main_~i~0#1 > 0); 164#L12 [2021-12-07 00:31:53,658 INFO L793 eck$LassoCheckResult]: Loop: 164#L12 assume !(1 == main_~i~0#1); 180#L12-2 assume !(10 == main_~i~0#1); 169#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 163#L18-1 assume !!(main_~i~0#1 > 0); 164#L12 [2021-12-07 00:31:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-07 00:31:53,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:53,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058623231] [2021-12-07 00:31:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:53,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,662 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,664 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1422198, now seen corresponding path program 1 times [2021-12-07 00:31:53,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:53,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256037102] [2021-12-07 00:31:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:53,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,668 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,672 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1810726045, now seen corresponding path program 1 times [2021-12-07 00:31:53,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:53,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363147695] [2021-12-07 00:31:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:53,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,679 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:53,683 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:53,703 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:53,704 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:53,704 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:53,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:53,704 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:31:53,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,704 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:53,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:53,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2021-12-07 00:31:53,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:53,704 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:53,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-07 00:31:53,771 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:53,772 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:31:53,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-07 00:31:53,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:53,774 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:53,790 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:53,790 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: [] [2021-12-07 00:31:53,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-07 00:31:53,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,819 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-07 00:31:53,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:53,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:53,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-07 00:31:53,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,848 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-07 00:31:53,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:31:53,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:53,922 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:31:53,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-07 00:31:53,924 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:53,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:53,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:53,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:53,924 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:31:53,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:53,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:53,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2021-12-07 00:31:53,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:53,925 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:53,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:53,977 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:53,977 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:31:53,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:53,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:53,978 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:53,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-07 00:31:53,979 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 [2021-12-07 00:31:53,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:53,986 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:53,986 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:53,986 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:53,988 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:31:53,988 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:31:53,991 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:54,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-07 00:31:54,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,010 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-07 00:31:54,012 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 [2021-12-07 00:31:54,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:54,019 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:54,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:54,019 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-07 00:31:54,019 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:54,021 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-07 00:31:54,021 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:54,024 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:31:54,026 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:31:54,026 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-07 00:31:54,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,027 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-07 00:31:54,028 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:31:54,029 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:31:54,029 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:31:54,029 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-07 00:31:54,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:54,047 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:31:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:54,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:54,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:54,061 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:31:54,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:54,088 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 [2021-12-07 00:31:54,088 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 36 transitions. cyclomatic complexity: 14 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-12-07 00:31:54,107 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 36 transitions. cyclomatic complexity: 14. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 41 states and 59 transitions. Complement of second has 7 states. [2021-12-07 00:31:54,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-12-07 00:31:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-07 00:31:54,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-07 00:31:54,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:54,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-07 00:31:54,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:54,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-07 00:31:54,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:54,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 59 transitions. [2021-12-07 00:31:54,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-07 00:31:54,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 32 states and 49 transitions. [2021-12-07 00:31:54,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-12-07 00:31:54,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-07 00:31:54,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 49 transitions. [2021-12-07 00:31:54,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:54,113 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 49 transitions. [2021-12-07 00:31:54,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 49 transitions. [2021-12-07 00:31:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-07 00:31:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.53125) internal successors, (49), 31 states have internal predecessors, (49), 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) [2021-12-07 00:31:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 49 transitions. [2021-12-07 00:31:54,116 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 49 transitions. [2021-12-07 00:31:54,116 INFO L587 BuchiCegarLoop]: Abstraction has 32 states and 49 transitions. [2021-12-07 00:31:54,116 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-07 00:31:54,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 49 transitions. [2021-12-07 00:31:54,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-07 00:31:54,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:54,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:54,117 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-07 00:31:54,117 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-07 00:31:54,117 INFO L791 eck$LassoCheckResult]: Stem: 277#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 278#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 281#L18-1 assume !!(main_~i~0#1 > 0); 284#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 286#L12-2 assume !(10 == main_~i~0#1); 291#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 292#L18-1 [2021-12-07 00:31:54,117 INFO L793 eck$LassoCheckResult]: Loop: 292#L18-1 assume !!(main_~i~0#1 > 0); 299#L12 assume !(1 == main_~i~0#1); 293#L12-2 assume !(10 == main_~i~0#1); 294#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 292#L18-1 [2021-12-07 00:31:54,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:54,118 INFO L85 PathProgramCache]: Analyzing trace with hash 889692586, now seen corresponding path program 1 times [2021-12-07 00:31:54,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:54,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185673873] [2021-12-07 00:31:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:54,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:54,122 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:54,125 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:54,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1267306, now seen corresponding path program 1 times [2021-12-07 00:31:54,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:54,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005261832] [2021-12-07 00:31:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:54,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:54,129 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:54,132 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:54,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1068497811, now seen corresponding path program 1 times [2021-12-07 00:31:54,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:54,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209124524] [2021-12-07 00:31:54,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:54,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:54,138 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:54,142 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:54,161 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:54,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:54,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:54,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:54,162 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:31:54,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:54,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:54,162 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Loop [2021-12-07 00:31:54,162 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:54,162 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:54,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,220 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:54,220 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:31:54,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,221 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-07 00:31:54,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:54,222 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:54,235 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:54,235 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: [] [2021-12-07 00:31:54,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-07 00:31:54,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,254 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-07 00:31:54,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:54,255 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:54,263 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:54,263 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:31:54,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:54,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,282 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-07 00:31:54,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:54,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:54,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:54,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,310 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-07 00:31:54,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:31:54,311 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:54,332 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:54,332 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0#1=11} Honda state: {ULTIMATE.start_main_~i~0#1=11} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0#1=0}, {ULTIMATE.start_main_~i~0#1=0}, {ULTIMATE.start_main_~i~0#1=1}] Lambdas: [0, 0, 1] Nus: [0, 0] [2021-12-07 00:31:54,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:54,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,351 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-07 00:31:54,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:54,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:54,365 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:54,366 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:31:54,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-07 00:31:54,397 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:54,397 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:54,397 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:54,397 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:54,397 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:31:54,397 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,397 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:54,397 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:54,397 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2021-12-07 00:31:54,397 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:54,397 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:54,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-07 00:31:54,474 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:54,474 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:31:54,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,475 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-07 00:31:54,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:54,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:54,487 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:54,488 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:31:54,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-07 00:31:54,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,507 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-07 00:31:54,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:54,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:54,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-07 00:31:54,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,535 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-07 00:31:54,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:31:54,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:54,568 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:31:54,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-07 00:31:54,570 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:54,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:54,570 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:54,570 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:54,570 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:31:54,570 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,570 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:54,570 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:54,570 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2021-12-07 00:31:54,570 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:54,570 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:54,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,630 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:54,630 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:31:54,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,631 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-07 00:31:54,632 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 [2021-12-07 00:31:54,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:54,639 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:54,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:54,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:54,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:54,640 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:31:54,640 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:54,641 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:54,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-07 00:31:54,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,660 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-07 00:31:54,661 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 [2021-12-07 00:31:54,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:54,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:54,669 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-07 00:31:54,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:54,675 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-12-07 00:31:54,675 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-12-07 00:31:54,687 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:31:54,707 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2021-12-07 00:31:54,707 INFO L444 ModelExtractionUtils]: 0 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. [2021-12-07 00:31:54,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,708 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-07 00:31:54,709 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:31:54,719 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-12-07 00:31:54,719 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:31:54,719 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 21 Supporting invariants [-1*ULTIMATE.start_main_~i~0#1 + 10 >= 0] [2021-12-07 00:31:54,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-07 00:31:54,739 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-12-07 00:31:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:54,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:31:54,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:54,777 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:31:54,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:54,806 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2021-12-07 00:31:54,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 49 transitions. cyclomatic complexity: 21 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-12-07 00:31:54,842 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 49 transitions. cyclomatic complexity: 21. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) Result 46 states and 68 transitions. Complement of second has 8 states. [2021-12-07 00:31:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-12-07 00:31:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-12-07 00:31:54,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-07 00:31:54,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:54,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-07 00:31:54,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:54,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 6 letters. Loop has 8 letters. [2021-12-07 00:31:54,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:54,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2021-12-07 00:31:54,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-07 00:31:54,846 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 45 states and 67 transitions. [2021-12-07 00:31:54,846 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-12-07 00:31:54,846 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-12-07 00:31:54,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 67 transitions. [2021-12-07 00:31:54,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:54,846 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 67 transitions. [2021-12-07 00:31:54,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 67 transitions. [2021-12-07 00:31:54,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-12-07 00:31:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 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) [2021-12-07 00:31:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 64 transitions. [2021-12-07 00:31:54,849 INFO L704 BuchiCegarLoop]: Abstraction has 42 states and 64 transitions. [2021-12-07 00:31:54,849 INFO L587 BuchiCegarLoop]: Abstraction has 42 states and 64 transitions. [2021-12-07 00:31:54,849 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-07 00:31:54,850 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 64 transitions. [2021-12-07 00:31:54,850 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-07 00:31:54,850 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:54,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:54,851 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:31:54,851 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-07 00:31:54,851 INFO L791 eck$LassoCheckResult]: Stem: 421#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 422#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 426#L18-1 assume !!(main_~i~0#1 > 0); 435#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 432#L12-2 assume !(10 == main_~i~0#1); 431#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 430#L18-1 assume !!(main_~i~0#1 > 0); 427#L12 assume !(1 == main_~i~0#1); 428#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 452#L15-1 [2021-12-07 00:31:54,851 INFO L793 eck$LassoCheckResult]: Loop: 452#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 417#L18-1 assume !!(main_~i~0#1 > 0); 418#L12 assume !(1 == main_~i~0#1); 451#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 452#L15-1 [2021-12-07 00:31:54,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:54,851 INFO L85 PathProgramCache]: Analyzing trace with hash 588656997, now seen corresponding path program 1 times [2021-12-07 00:31:54,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:54,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177597821] [2021-12-07 00:31:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:54,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:54,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:54,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177597821] [2021-12-07 00:31:54,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177597821] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:31:54,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165794329] [2021-12-07 00:31:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:54,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:31:54,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,869 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-07 00:31:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:54,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:31:54,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:54,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:31:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:54,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165794329] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:31:54,913 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:31:54,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-07 00:31:54,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052566589] [2021-12-07 00:31:54,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:31:54,913 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-07 00:31:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1768756, now seen corresponding path program 2 times [2021-12-07 00:31:54,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:54,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703230412] [2021-12-07 00:31:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:54,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:54,916 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:54,920 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:54,940 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:54,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:54,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:54,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:54,940 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:31:54,940 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:54,941 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:54,941 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2021-12-07 00:31:54,941 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:54,941 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:54,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:54,974 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:54,975 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:31:54,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:54,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:54,991 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:54,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-07 00:31:54,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:54,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:55,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-07 00:31:55,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,019 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-07 00:31:55,020 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:31:55,020 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:55,112 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:31:55,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:55,114 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:55,114 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:55,114 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:55,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:55,114 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:31:55,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:55,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:55,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2021-12-07 00:31:55,114 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:55,114 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:55,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-12-07 00:31:55,152 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:55,152 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:31:55,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,153 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-07 00:31:55,154 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 [2021-12-07 00:31:55,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:55,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:55,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:55,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:55,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:55,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:31:55,162 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:55,164 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:31:55,165 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:31:55,165 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-07 00:31:55,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,166 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-07 00:31:55,167 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:31:55,167 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:31:55,167 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:31:55,167 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-07 00:31:55,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-12-07 00:31:55,186 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:31:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:55,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:55,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:55,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:31:55,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:55,215 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 [2021-12-07 00:31:55,215 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 64 transitions. cyclomatic complexity: 27 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-12-07 00:31:55,234 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 64 transitions. cyclomatic complexity: 27. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Result 105 states and 160 transitions. Complement of second has 7 states. [2021-12-07 00:31:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2021-12-07 00:31:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-07 00:31:55,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-07 00:31:55,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:55,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-07 00:31:55,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:55,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-07 00:31:55,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:55,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 160 transitions. [2021-12-07 00:31:55,238 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-07 00:31:55,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 87 states and 133 transitions. [2021-12-07 00:31:55,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-12-07 00:31:55,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-12-07 00:31:55,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 133 transitions. [2021-12-07 00:31:55,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:55,240 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 133 transitions. [2021-12-07 00:31:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 133 transitions. [2021-12-07 00:31:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2021-12-07 00:31:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 81 states have internal predecessors, (127), 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) [2021-12-07 00:31:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 127 transitions. [2021-12-07 00:31:55,245 INFO L704 BuchiCegarLoop]: Abstraction has 82 states and 127 transitions. [2021-12-07 00:31:55,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:55,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:31:55,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:31:55,246 INFO L87 Difference]: Start difference. First operand 82 states and 127 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-12-07 00:31:55,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:55,269 INFO L93 Difference]: Finished difference Result 160 states and 239 transitions. [2021-12-07 00:31:55,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:31:55,270 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 239 transitions. [2021-12-07 00:31:55,272 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2021-12-07 00:31:55,274 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 160 states and 239 transitions. [2021-12-07 00:31:55,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2021-12-07 00:31:55,275 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2021-12-07 00:31:55,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 239 transitions. [2021-12-07 00:31:55,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:55,275 INFO L681 BuchiCegarLoop]: Abstraction has 160 states and 239 transitions. [2021-12-07 00:31:55,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 239 transitions. [2021-12-07 00:31:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 136. [2021-12-07 00:31:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 136 states have (on average 1.5220588235294117) internal successors, (207), 135 states have internal predecessors, (207), 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) [2021-12-07 00:31:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 207 transitions. [2021-12-07 00:31:55,282 INFO L704 BuchiCegarLoop]: Abstraction has 136 states and 207 transitions. [2021-12-07 00:31:55,282 INFO L587 BuchiCegarLoop]: Abstraction has 136 states and 207 transitions. [2021-12-07 00:31:55,282 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-07 00:31:55,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 136 states and 207 transitions. [2021-12-07 00:31:55,283 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2021-12-07 00:31:55,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:55,283 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:55,283 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2021-12-07 00:31:55,283 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-07 00:31:55,284 INFO L791 eck$LassoCheckResult]: Stem: 924#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 925#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 928#L18-1 assume !!(main_~i~0#1 > 0); 942#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 938#L12-2 assume !(10 == main_~i~0#1); 933#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 934#L18-1 assume !!(main_~i~0#1 > 0); 1009#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 972#L12-2 assume !(10 == main_~i~0#1); 1014#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 990#L18-1 [2021-12-07 00:31:55,284 INFO L793 eck$LassoCheckResult]: Loop: 990#L18-1 assume !!(main_~i~0#1 > 0); 1000#L12 assume !(1 == main_~i~0#1); 983#L12-2 assume !(10 == main_~i~0#1); 995#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 990#L18-1 [2021-12-07 00:31:55,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:55,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1068495891, now seen corresponding path program 1 times [2021-12-07 00:31:55,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:55,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182477884] [2021-12-07 00:31:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:55,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:55,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:55,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182477884] [2021-12-07 00:31:55,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182477884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:55,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:55,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:31:55,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487620567] [2021-12-07 00:31:55,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:55,299 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-07 00:31:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1267308, now seen corresponding path program 2 times [2021-12-07 00:31:55,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:55,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352732093] [2021-12-07 00:31:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:55,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:55,302 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:55,304 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:55,317 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:55,317 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:55,317 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:55,317 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:55,317 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:31:55,317 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,317 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:55,317 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:55,317 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration7_Loop [2021-12-07 00:31:55,317 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:55,318 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:55,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,365 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:55,365 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:31:55,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,366 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-07 00:31:55,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:55,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:55,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-12-07 00:31:55,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,393 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-07 00:31:55,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:31:55,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:55,431 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:31:55,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:55,433 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:55,433 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:55,433 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:55,433 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:55,433 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:31:55,433 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,433 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:55,433 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:55,433 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration7_Loop [2021-12-07 00:31:55,433 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:55,433 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:55,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,480 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:55,480 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:31:55,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,481 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-07 00:31:55,482 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 [2021-12-07 00:31:55,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:55,489 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:55,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:55,489 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-07 00:31:55,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:55,490 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-07 00:31:55,490 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:55,492 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:31:55,494 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:31:55,494 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-07 00:31:55,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,495 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-07 00:31:55,496 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:31:55,496 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:31:55,496 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:31:55,496 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-07 00:31:55,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-12-07 00:31:55,514 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:31:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:55,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:55,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:55,535 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:31:55,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:55,547 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 [2021-12-07 00:31:55,547 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 136 states and 207 transitions. cyclomatic complexity: 82 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-07 00:31:55,558 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 136 states and 207 transitions. cyclomatic complexity: 82. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 248 states and 381 transitions. Complement of second has 5 states. [2021-12-07 00:31:55,559 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 [2021-12-07 00:31:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-07 00:31:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2021-12-07 00:31:55,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-07 00:31:55,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:55,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2021-12-07 00:31:55,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:55,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 8 letters. [2021-12-07 00:31:55,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:55,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 248 states and 381 transitions. [2021-12-07 00:31:55,562 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2021-12-07 00:31:55,564 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 248 states to 224 states and 333 transitions. [2021-12-07 00:31:55,564 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 101 [2021-12-07 00:31:55,565 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 112 [2021-12-07 00:31:55,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 333 transitions. [2021-12-07 00:31:55,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:55,565 INFO L681 BuchiCegarLoop]: Abstraction has 224 states and 333 transitions. [2021-12-07 00:31:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 333 transitions. [2021-12-07 00:31:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 202. [2021-12-07 00:31:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 202 states have (on average 1.504950495049505) internal successors, (304), 201 states have internal predecessors, (304), 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) [2021-12-07 00:31:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2021-12-07 00:31:55,573 INFO L704 BuchiCegarLoop]: Abstraction has 202 states and 304 transitions. [2021-12-07 00:31:55,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:55,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:31:55,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:31:55,574 INFO L87 Difference]: Start difference. First operand 202 states and 304 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-07 00:31:55,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:55,585 INFO L93 Difference]: Finished difference Result 230 states and 313 transitions. [2021-12-07 00:31:55,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:31:55,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 230 states and 313 transitions. [2021-12-07 00:31:55,588 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 58 [2021-12-07 00:31:55,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 230 states to 230 states and 313 transitions. [2021-12-07 00:31:55,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2021-12-07 00:31:55,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2021-12-07 00:31:55,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 230 states and 313 transitions. [2021-12-07 00:31:55,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:55,590 INFO L681 BuchiCegarLoop]: Abstraction has 230 states and 313 transitions. [2021-12-07 00:31:55,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states and 313 transitions. [2021-12-07 00:31:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 201. [2021-12-07 00:31:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.3830845771144278) internal successors, (278), 200 states have internal predecessors, (278), 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) [2021-12-07 00:31:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2021-12-07 00:31:55,597 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-12-07 00:31:55,597 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-12-07 00:31:55,597 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-07 00:31:55,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 278 transitions. [2021-12-07 00:31:55,598 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2021-12-07 00:31:55,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:55,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:55,599 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 1, 1, 1, 1] [2021-12-07 00:31:55,599 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-07 00:31:55,599 INFO L791 eck$LassoCheckResult]: Stem: 1798#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1799#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1808#L18-1 assume !!(main_~i~0#1 > 0); 1828#L12 assume !(1 == main_~i~0#1); 1829#L12-2 assume !(10 == main_~i~0#1); 1845#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1846#L18-1 assume !!(main_~i~0#1 > 0); 1902#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 1835#L12-2 assume !(10 == main_~i~0#1); 1836#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1893#L18-1 assume !!(main_~i~0#1 > 0); 1894#L12 assume !(1 == main_~i~0#1); 1949#L12-2 assume !(10 == main_~i~0#1); 1948#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1929#L18-1 [2021-12-07 00:31:55,599 INFO L793 eck$LassoCheckResult]: Loop: 1929#L18-1 assume !!(main_~i~0#1 > 0); 1944#L12 assume !(1 == main_~i~0#1); 1945#L12-2 assume !(10 == main_~i~0#1); 1947#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1929#L18-1 [2021-12-07 00:31:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:55,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1847785984, now seen corresponding path program 1 times [2021-12-07 00:31:55,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:55,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893329991] [2021-12-07 00:31:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:55,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:31:55,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:55,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893329991] [2021-12-07 00:31:55,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893329991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:55,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:55,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:31:55,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395265931] [2021-12-07 00:31:55,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:55,612 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-07 00:31:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1267308, now seen corresponding path program 3 times [2021-12-07 00:31:55,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:55,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192109142] [2021-12-07 00:31:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:55,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:55,615 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:55,617 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:55,629 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:55,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:55,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:55,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:55,629 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:31:55,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:55,629 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:55,629 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2021-12-07 00:31:55,629 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:55,629 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:55,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,669 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:55,669 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:31:55,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,670 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-07 00:31:55,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:55,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:55,685 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:55,685 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_12=1} Honda state: {v_rep~unnamed0~0~true_12=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:31:55,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-12-07 00:31:55,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,704 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-07 00:31:55,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:55,705 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:55,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:55,717 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=4} Honda state: {ULTIMATE.start_main_~up~0#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:31:55,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-12-07 00:31:55,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,737 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-07 00:31:55,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:55,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:55,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:55,750 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_12=0} Honda state: {v_rep~unnamed0~0~false_12=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:31:55,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-12-07 00:31:55,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,769 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-07 00:31:55,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:55,770 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:55,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:55,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,796 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-07 00:31:55,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:31:55,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:55,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-12-07 00:31:55,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-07 00:31:55,845 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:31:55,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:55,847 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:55,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:55,847 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:55,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:55,848 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:31:55,848 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,848 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:55,848 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:55,848 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2021-12-07 00:31:55,848 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:55,848 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:55,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:55,888 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:55,888 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:31:55,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,889 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-07 00:31:55,890 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 [2021-12-07 00:31:55,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:55,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:55,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:55,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:55,898 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:31:55,898 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:31:55,900 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:55,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-12-07 00:31:55,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,919 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-07 00:31:55,920 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 [2021-12-07 00:31:55,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:55,927 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:55,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:55,927 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-07 00:31:55,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:55,928 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-07 00:31:55,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:55,929 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:55,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-12-07 00:31:55,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,947 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-07 00:31:55,949 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 [2021-12-07 00:31:55,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:55,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:55,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:55,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:55,958 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:31:55,958 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:31:55,961 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:55,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-12-07 00:31:55,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,979 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-07 00:31:55,981 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 [2021-12-07 00:31:55,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:55,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:55,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:55,988 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-07 00:31:55,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:55,990 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-07 00:31:55,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:55,992 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:31:55,994 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-07 00:31:55,994 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 00:31:55,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:55,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:55,995 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:55,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-07 00:31:55,995 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:31:55,995 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:31:55,996 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:31:55,996 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-07 00:31:56,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:56,014 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:31:56,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,039 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:56,052 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 [2021-12-07 00:31:56,052 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-07 00:31:56,063 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 280 states and 401 transitions. Complement of second has 5 states. [2021-12-07 00:31:56,064 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 [2021-12-07 00:31:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-07 00:31:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2021-12-07 00:31:56,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2021-12-07 00:31:56,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:56,064 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:31:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,090 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:56,103 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 00:31:56,103 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-07 00:31:56,112 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 280 states and 401 transitions. Complement of second has 5 states. [2021-12-07 00:31:56,113 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 [2021-12-07 00:31:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-07 00:31:56,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2021-12-07 00:31:56,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2021-12-07 00:31:56,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:56,113 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:31:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,138 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:56,153 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 00:31:56,153 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-07 00:31:56,165 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 334 states and 496 transitions. Complement of second has 4 states. [2021-12-07 00:31:56,165 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 [2021-12-07 00:31:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-12-07 00:31:56,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2021-12-07 00:31:56,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 14 letters. Loop has 4 letters. [2021-12-07 00:31:56,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:56,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 18 letters. Loop has 4 letters. [2021-12-07 00:31:56,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:56,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 14 letters. Loop has 8 letters. [2021-12-07 00:31:56,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:56,168 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 334 states and 496 transitions. [2021-12-07 00:31:56,172 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-12-07 00:31:56,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 334 states to 268 states and 378 transitions. [2021-12-07 00:31:56,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 111 [2021-12-07 00:31:56,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2021-12-07 00:31:56,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 268 states and 378 transitions. [2021-12-07 00:31:56,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:56,175 INFO L681 BuchiCegarLoop]: Abstraction has 268 states and 378 transitions. [2021-12-07 00:31:56,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states and 378 transitions. [2021-12-07 00:31:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 167. [2021-12-07 00:31:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.401197604790419) internal successors, (234), 166 states have internal predecessors, (234), 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) [2021-12-07 00:31:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 234 transitions. [2021-12-07 00:31:56,182 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 234 transitions. [2021-12-07 00:31:56,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:56,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:31:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:31:56,183 INFO L87 Difference]: Start difference. First operand 167 states and 234 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2021-12-07 00:31:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:56,188 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2021-12-07 00:31:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:31:56,188 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 118 transitions. [2021-12-07 00:31:56,189 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-07 00:31:56,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 81 states and 94 transitions. [2021-12-07 00:31:56,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-07 00:31:56,190 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-12-07 00:31:56,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 94 transitions. [2021-12-07 00:31:56,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:56,191 INFO L681 BuchiCegarLoop]: Abstraction has 81 states and 94 transitions. [2021-12-07 00:31:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states and 94 transitions. [2021-12-07 00:31:56,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-12-07 00:31:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 80 states have (on average 1.1625) internal successors, (93), 79 states have internal predecessors, (93), 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) [2021-12-07 00:31:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2021-12-07 00:31:56,193 INFO L704 BuchiCegarLoop]: Abstraction has 80 states and 93 transitions. [2021-12-07 00:31:56,193 INFO L587 BuchiCegarLoop]: Abstraction has 80 states and 93 transitions. [2021-12-07 00:31:56,193 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-07 00:31:56,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 93 transitions. [2021-12-07 00:31:56,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-12-07 00:31:56,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:56,194 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:56,195 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 4, 1, 1, 1, 1, 1] [2021-12-07 00:31:56,195 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 1, 1, 1] [2021-12-07 00:31:56,195 INFO L791 eck$LassoCheckResult]: Stem: 3358#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3359#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3363#L18-1 assume !!(main_~i~0#1 > 0); 3389#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 3385#L12-2 assume !(10 == main_~i~0#1); 3384#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3383#L18-1 assume !!(main_~i~0#1 > 0); 3382#L12 assume !(1 == main_~i~0#1); 3381#L12-2 assume !(10 == main_~i~0#1); 3380#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3379#L18-1 assume !!(main_~i~0#1 > 0); 3378#L12 assume !(1 == main_~i~0#1); 3377#L12-2 assume !(10 == main_~i~0#1); 3376#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3375#L18-1 assume !!(main_~i~0#1 > 0); 3372#L12 assume !(1 == main_~i~0#1); 3374#L12-2 assume !(10 == main_~i~0#1); 3373#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3371#L18-1 assume !!(main_~i~0#1 > 0); 3370#L12 assume !(1 == main_~i~0#1); 3369#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3360#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3361#L18-1 assume !!(main_~i~0#1 > 0); 3422#L12 [2021-12-07 00:31:56,195 INFO L793 eck$LassoCheckResult]: Loop: 3422#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 3350#L12-2 assume !(10 == main_~i~0#1); 3351#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3354#L18-1 assume !!(main_~i~0#1 > 0); 3355#L12 assume !(1 == main_~i~0#1); 3421#L12-2 assume !(10 == main_~i~0#1); 3420#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3419#L18-1 assume !!(main_~i~0#1 > 0); 3418#L12 assume !(1 == main_~i~0#1); 3417#L12-2 assume !(10 == main_~i~0#1); 3416#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3415#L18-1 assume !!(main_~i~0#1 > 0); 3414#L12 assume !(1 == main_~i~0#1); 3413#L12-2 assume !(10 == main_~i~0#1); 3398#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3394#L18-1 assume !!(main_~i~0#1 > 0); 3387#L12 assume !(1 == main_~i~0#1); 3388#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3366#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3367#L18-1 assume !!(main_~i~0#1 > 0); 3422#L12 [2021-12-07 00:31:56,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:56,195 INFO L85 PathProgramCache]: Analyzing trace with hash 123757625, now seen corresponding path program 1 times [2021-12-07 00:31:56,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:56,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424568844] [2021-12-07 00:31:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:56,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:56,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:56,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424568844] [2021-12-07 00:31:56,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424568844] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:31:56,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030237913] [2021-12-07 00:31:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:56,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:31:56,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:56,230 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:31:56,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-07 00:31:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:56,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:31:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:56,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030237913] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:31:56,323 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:31:56,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-07 00:31:56,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156233443] [2021-12-07 00:31:56,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:31:56,324 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-07 00:31:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:56,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2141599470, now seen corresponding path program 1 times [2021-12-07 00:31:56,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:56,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173109779] [2021-12-07 00:31:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:56,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:56,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:56,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173109779] [2021-12-07 00:31:56,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173109779] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:31:56,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909348307] [2021-12-07 00:31:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:56,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:31:56,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:56,351 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:31:56,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-12-07 00:31:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:56,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:31:56,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-12-07 00:31:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:56,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909348307] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:31:56,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:31:56,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-12-07 00:31:56,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468023052] [2021-12-07 00:31:56,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:31:56,443 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-07 00:31:56,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:56,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:31:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:31:56,444 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. cyclomatic complexity: 19 Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:31:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:56,476 INFO L93 Difference]: Finished difference Result 167 states and 180 transitions. [2021-12-07 00:31:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:31:56,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167 states and 180 transitions. [2021-12-07 00:31:56,477 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2021-12-07 00:31:56,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167 states to 147 states and 160 transitions. [2021-12-07 00:31:56,478 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2021-12-07 00:31:56,478 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-12-07 00:31:56,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 147 states and 160 transitions. [2021-12-07 00:31:56,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:56,478 INFO L681 BuchiCegarLoop]: Abstraction has 147 states and 160 transitions. [2021-12-07 00:31:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states and 160 transitions. [2021-12-07 00:31:56,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 140. [2021-12-07 00:31:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 140 states have (on average 1.0928571428571427) internal successors, (153), 139 states have internal predecessors, (153), 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) [2021-12-07 00:31:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2021-12-07 00:31:56,481 INFO L704 BuchiCegarLoop]: Abstraction has 140 states and 153 transitions. [2021-12-07 00:31:56,481 INFO L587 BuchiCegarLoop]: Abstraction has 140 states and 153 transitions. [2021-12-07 00:31:56,481 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-07 00:31:56,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 140 states and 153 transitions. [2021-12-07 00:31:56,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2021-12-07 00:31:56,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:56,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:56,483 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 9, 9, 1, 1, 1, 1, 1] [2021-12-07 00:31:56,483 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 9, 1, 1, 1] [2021-12-07 00:31:56,483 INFO L791 eck$LassoCheckResult]: Stem: 3875#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3876#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3879#L18-1 assume !!(main_~i~0#1 > 0); 3950#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 3866#L12-2 assume !(10 == main_~i~0#1); 3867#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3882#L18-1 assume !!(main_~i~0#1 > 0); 3973#L12 assume !(1 == main_~i~0#1); 3972#L12-2 assume !(10 == main_~i~0#1); 3971#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3970#L18-1 assume !!(main_~i~0#1 > 0); 3969#L12 assume !(1 == main_~i~0#1); 3968#L12-2 assume !(10 == main_~i~0#1); 3967#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3966#L18-1 assume !!(main_~i~0#1 > 0); 3965#L12 assume !(1 == main_~i~0#1); 3964#L12-2 assume !(10 == main_~i~0#1); 3963#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3962#L18-1 assume !!(main_~i~0#1 > 0); 3961#L12 assume !(1 == main_~i~0#1); 3960#L12-2 assume !(10 == main_~i~0#1); 3959#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3958#L18-1 assume !!(main_~i~0#1 > 0); 3957#L12 assume !(1 == main_~i~0#1); 3956#L12-2 assume !(10 == main_~i~0#1); 3955#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3954#L18-1 assume !!(main_~i~0#1 > 0); 3953#L12 assume !(1 == main_~i~0#1); 3952#L12-2 assume !(10 == main_~i~0#1); 3951#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3948#L18-1 assume !!(main_~i~0#1 > 0); 3947#L12 assume !(1 == main_~i~0#1); 3944#L12-2 assume !(10 == main_~i~0#1); 3942#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3938#L18-1 assume !!(main_~i~0#1 > 0); 3889#L12 assume !(1 == main_~i~0#1); 3893#L12-2 assume !(10 == main_~i~0#1); 3890#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3888#L18-1 assume !!(main_~i~0#1 > 0); 3887#L12 assume !(1 == main_~i~0#1); 3886#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3877#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3878#L18-1 assume !!(main_~i~0#1 > 0); 3933#L12 [2021-12-07 00:31:56,483 INFO L793 eck$LassoCheckResult]: Loop: 3933#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 3932#L12-2 assume !(10 == main_~i~0#1); 3931#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3930#L18-1 assume !!(main_~i~0#1 > 0); 3929#L12 assume !(1 == main_~i~0#1); 3928#L12-2 assume !(10 == main_~i~0#1); 3927#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3926#L18-1 assume !!(main_~i~0#1 > 0); 3925#L12 assume !(1 == main_~i~0#1); 3924#L12-2 assume !(10 == main_~i~0#1); 3923#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3922#L18-1 assume !!(main_~i~0#1 > 0); 3921#L12 assume !(1 == main_~i~0#1); 3920#L12-2 assume !(10 == main_~i~0#1); 3919#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3918#L18-1 assume !!(main_~i~0#1 > 0); 3917#L12 assume !(1 == main_~i~0#1); 3916#L12-2 assume !(10 == main_~i~0#1); 3915#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3914#L18-1 assume !!(main_~i~0#1 > 0); 3913#L12 assume !(1 == main_~i~0#1); 3912#L12-2 assume !(10 == main_~i~0#1); 3911#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3910#L18-1 assume !!(main_~i~0#1 > 0); 3909#L12 assume !(1 == main_~i~0#1); 3908#L12-2 assume !(10 == main_~i~0#1); 3907#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3906#L18-1 assume !!(main_~i~0#1 > 0); 3905#L12 assume !(1 == main_~i~0#1); 3904#L12-2 assume !(10 == main_~i~0#1); 3903#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3902#L18-1 assume !!(main_~i~0#1 > 0); 3901#L12 assume !(1 == main_~i~0#1); 3900#L12-2 assume !(10 == main_~i~0#1); 3898#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3894#L18-1 assume !!(main_~i~0#1 > 0); 3891#L12 assume !(1 == main_~i~0#1); 3892#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3883#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3884#L18-1 assume !!(main_~i~0#1 > 0); 3933#L12 [2021-12-07 00:31:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:56,483 INFO L85 PathProgramCache]: Analyzing trace with hash -273593524, now seen corresponding path program 2 times [2021-12-07 00:31:56,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:56,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932497882] [2021-12-07 00:31:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:56,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:56,491 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:56,498 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:56,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:56,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1615279707, now seen corresponding path program 2 times [2021-12-07 00:31:56,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:56,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36475657] [2021-12-07 00:31:56,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:56,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:56,505 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:56,512 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:56,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:56,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1777315312, now seen corresponding path program 3 times [2021-12-07 00:31:56,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:56,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266261849] [2021-12-07 00:31:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:56,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-12-07 00:31:56,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:56,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266261849] [2021-12-07 00:31:56,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266261849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:56,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:56,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:31:56,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278723344] [2021-12-07 00:31:56,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:56,621 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:56,621 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:56,621 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:56,621 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:56,621 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:31:56,621 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:56,621 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:56,621 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:56,621 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration10_Loop [2021-12-07 00:31:56,621 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:56,621 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:56,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:56,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:56,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:56,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:56,647 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:56,647 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:31:56,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:56,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:56,648 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:56,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-07 00:31:56,649 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:56,649 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:56,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-12-07 00:31:56,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:56,681 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:56,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-07 00:31:56,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:31:56,682 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:56,691 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:31:56,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-12-07 00:31:56,709 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:56,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:56,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:56,709 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:56,709 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:31:56,709 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:56,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:56,709 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:56,709 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration10_Loop [2021-12-07 00:31:56,709 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:56,709 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:56,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:56,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:56,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:56,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:56,735 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:56,736 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:31:56,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:56,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:56,736 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:56,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-07 00:31:56,737 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 [2021-12-07 00:31:56,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:56,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:56,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:56,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:56,747 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:31:56,747 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:31:56,750 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:56,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-12-07 00:31:56,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:56,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:56,769 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:56,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-07 00:31:56,770 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 [2021-12-07 00:31:56,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:56,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:56,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:56,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:56,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:56,778 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:31:56,778 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:56,779 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:31:56,781 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:31:56,781 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 00:31:56,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:56,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:56,782 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:56,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-07 00:31:56,783 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:31:56,783 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:31:56,783 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:31:56,783 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 5 Supporting invariants [] [2021-12-07 00:31:56,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-12-07 00:31:56,801 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:31:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:31:56,925 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-07 00:31:56,926 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 140 states and 153 transitions. cyclomatic complexity: 19 Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-12-07 00:31:56,949 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 140 states and 153 transitions. cyclomatic complexity: 19. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 226 states and 242 transitions. Complement of second has 7 states. [2021-12-07 00:31:56,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:56,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-12-07 00:31:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-12-07 00:31:56,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 43 letters. Loop has 40 letters. [2021-12-07 00:31:56,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:56,951 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:31:56,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:56,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:56,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:56,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-12-07 00:31:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:57,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:31:57,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:31:57,078 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-07 00:31:57,078 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 140 states and 153 transitions. cyclomatic complexity: 19 Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-12-07 00:31:57,109 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 140 states and 153 transitions. cyclomatic complexity: 19. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 313 states and 335 transitions. Complement of second has 11 states. [2021-12-07 00:31:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-12-07 00:31:57,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2021-12-07 00:31:57,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 43 letters. Loop has 40 letters. [2021-12-07 00:31:57,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:57,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 83 letters. Loop has 40 letters. [2021-12-07 00:31:57,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:57,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 43 letters. Loop has 80 letters. [2021-12-07 00:31:57,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:57,112 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 313 states and 335 transitions. [2021-12-07 00:31:57,114 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 48 [2021-12-07 00:31:57,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 313 states to 265 states and 285 transitions. [2021-12-07 00:31:57,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2021-12-07 00:31:57,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2021-12-07 00:31:57,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 265 states and 285 transitions. [2021-12-07 00:31:57,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:57,115 INFO L681 BuchiCegarLoop]: Abstraction has 265 states and 285 transitions. [2021-12-07 00:31:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states and 285 transitions. [2021-12-07 00:31:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 221. [2021-12-07 00:31:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 221 states have (on average 1.0769230769230769) internal successors, (238), 220 states have internal predecessors, (238), 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) [2021-12-07 00:31:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 238 transitions. [2021-12-07 00:31:57,119 INFO L704 BuchiCegarLoop]: Abstraction has 221 states and 238 transitions. [2021-12-07 00:31:57,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:57,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:31:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:31:57,119 INFO L87 Difference]: Start difference. First operand 221 states and 238 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-12-07 00:31:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:57,132 INFO L93 Difference]: Finished difference Result 192 states and 207 transitions. [2021-12-07 00:31:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:31:57,132 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 192 states and 207 transitions. [2021-12-07 00:31:57,133 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-12-07 00:31:57,134 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 192 states to 189 states and 203 transitions. [2021-12-07 00:31:57,134 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-12-07 00:31:57,134 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 58 [2021-12-07 00:31:57,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 203 transitions. [2021-12-07 00:31:57,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:57,135 INFO L681 BuchiCegarLoop]: Abstraction has 189 states and 203 transitions. [2021-12-07 00:31:57,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states and 203 transitions. [2021-12-07 00:31:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2021-12-07 00:31:57,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 179 states have (on average 1.0670391061452513) internal successors, (191), 178 states have internal predecessors, (191), 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) [2021-12-07 00:31:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 191 transitions. [2021-12-07 00:31:57,137 INFO L704 BuchiCegarLoop]: Abstraction has 179 states and 191 transitions. [2021-12-07 00:31:57,137 INFO L587 BuchiCegarLoop]: Abstraction has 179 states and 191 transitions. [2021-12-07 00:31:57,137 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-07 00:31:57,137 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 179 states and 191 transitions. [2021-12-07 00:31:57,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 46 [2021-12-07 00:31:57,138 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:57,138 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:57,139 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [12, 10, 10, 9, 2, 1, 1, 1, 1] [2021-12-07 00:31:57,139 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2021-12-07 00:31:57,140 INFO L791 eck$LassoCheckResult]: Stem: 5511#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 5512#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 5515#L18-1 assume !!(main_~i~0#1 > 0); 5565#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 5505#L12-2 assume !(10 == main_~i~0#1); 5506#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5509#L18-1 assume !!(main_~i~0#1 > 0); 5510#L12 assume !(1 == main_~i~0#1); 5518#L12-2 assume !(10 == main_~i~0#1); 5681#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5680#L18-1 assume !!(main_~i~0#1 > 0); 5679#L12 assume !(1 == main_~i~0#1); 5678#L12-2 assume !(10 == main_~i~0#1); 5677#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5676#L18-1 assume !!(main_~i~0#1 > 0); 5675#L12 assume !(1 == main_~i~0#1); 5674#L12-2 assume !(10 == main_~i~0#1); 5673#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5672#L18-1 assume !!(main_~i~0#1 > 0); 5671#L12 assume !(1 == main_~i~0#1); 5670#L12-2 assume !(10 == main_~i~0#1); 5669#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5668#L18-1 assume !!(main_~i~0#1 > 0); 5667#L12 assume !(1 == main_~i~0#1); 5666#L12-2 assume !(10 == main_~i~0#1); 5665#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5664#L18-1 assume !!(main_~i~0#1 > 0); 5663#L12 assume !(1 == main_~i~0#1); 5662#L12-2 assume !(10 == main_~i~0#1); 5661#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5660#L18-1 assume !!(main_~i~0#1 > 0); 5659#L12 assume !(1 == main_~i~0#1); 5658#L12-2 assume !(10 == main_~i~0#1); 5657#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5656#L18-1 assume !!(main_~i~0#1 > 0); 5653#L12 assume !(1 == main_~i~0#1); 5655#L12-2 assume !(10 == main_~i~0#1); 5654#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5652#L18-1 assume !!(main_~i~0#1 > 0); 5651#L12 assume !(1 == main_~i~0#1); 5650#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 5648#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 5514#L18-1 assume !!(main_~i~0#1 > 0); 5508#L12 assume !(1 == main_~i~0#1); 5647#L12-2 assume !(10 == main_~i~0#1); 5641#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 5639#L18-1 assume !!(main_~i~0#1 > 0); 5636#L12 [2021-12-07 00:31:57,140 INFO L793 eck$LassoCheckResult]: Loop: 5636#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 5503#L12-2 assume !(10 == main_~i~0#1); 5504#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5630#L18-1 assume !!(main_~i~0#1 > 0); 5628#L12 assume !(1 == main_~i~0#1); 5626#L12-2 assume !(10 == main_~i~0#1); 5624#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5622#L18-1 assume !!(main_~i~0#1 > 0); 5620#L12 assume !(1 == main_~i~0#1); 5618#L12-2 assume !(10 == main_~i~0#1); 5616#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5614#L18-1 assume !!(main_~i~0#1 > 0); 5612#L12 assume !(1 == main_~i~0#1); 5610#L12-2 assume !(10 == main_~i~0#1); 5608#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5606#L18-1 assume !!(main_~i~0#1 > 0); 5604#L12 assume !(1 == main_~i~0#1); 5602#L12-2 assume !(10 == main_~i~0#1); 5600#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5598#L18-1 assume !!(main_~i~0#1 > 0); 5596#L12 assume !(1 == main_~i~0#1); 5594#L12-2 assume !(10 == main_~i~0#1); 5592#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5590#L18-1 assume !!(main_~i~0#1 > 0); 5588#L12 assume !(1 == main_~i~0#1); 5586#L12-2 assume !(10 == main_~i~0#1); 5584#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5582#L18-1 assume !!(main_~i~0#1 > 0); 5581#L12 assume !(1 == main_~i~0#1); 5580#L12-2 assume !(10 == main_~i~0#1); 5579#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5578#L18-1 assume !!(main_~i~0#1 > 0); 5577#L12 assume !(1 == main_~i~0#1); 5575#L12-2 assume !(10 == main_~i~0#1); 5573#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5569#L18-1 assume !!(main_~i~0#1 > 0); 5567#L12 assume !(1 == main_~i~0#1); 5568#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 5521#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 5507#L18-1 assume !!(main_~i~0#1 > 0); 5508#L12 assume !(1 == main_~i~0#1); 5647#L12-2 assume !(10 == main_~i~0#1); 5641#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 5639#L18-1 assume !!(main_~i~0#1 > 0); 5636#L12 [2021-12-07 00:31:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:57,140 INFO L85 PathProgramCache]: Analyzing trace with hash -733322943, now seen corresponding path program 4 times [2021-12-07 00:31:57,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:57,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791197989] [2021-12-07 00:31:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:57,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:57,146 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:57,152 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:57,153 INFO L85 PathProgramCache]: Analyzing trace with hash 491326234, now seen corresponding path program 3 times [2021-12-07 00:31:57,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:57,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036987220] [2021-12-07 00:31:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:57,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:57,159 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:57,164 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:57,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1133081510, now seen corresponding path program 5 times [2021-12-07 00:31:57,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:57,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169063596] [2021-12-07 00:31:57,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:57,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 562 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-12-07 00:31:57,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:57,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169063596] [2021-12-07 00:31:57,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169063596] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:31:57,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317816500] [2021-12-07 00:31:57,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:31:57,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:31:57,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:57,200 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:31:57,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-12-07 00:31:57,224 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-07 00:31:57,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:31:57,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:31:57,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 562 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-12-07 00:31:57,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:31:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 562 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-12-07 00:31:57,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317816500] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:31:57,359 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:31:57,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-12-07 00:31:57,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148550631] [2021-12-07 00:31:57,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:31:57,449 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:57,449 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:57,449 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:57,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:57,449 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:31:57,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:57,449 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:57,449 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration11_Loop [2021-12-07 00:31:57,449 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:57,449 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:57,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:57,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:57,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:57,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:57,471 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:57,471 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:31:57,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:57,472 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:57,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-07 00:31:57,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:57,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:57,485 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:57,485 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_16=1} Honda state: {v_rep~unnamed0~0~true_16=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:31:57,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-12-07 00:31:57,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:57,504 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:57,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-07 00:31:57,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:57,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:57,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:57,513 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:31:57,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-12-07 00:31:57,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:57,531 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:57,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-12-07 00:31:57,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:57,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:57,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-12-07 00:31:57,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:57,558 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:57,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-12-07 00:31:57,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:31:57,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:57,631 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:31:57,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:57,633 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:57,633 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:57,633 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:57,633 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:57,633 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:31:57,633 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,633 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:57,633 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:57,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration11_Loop [2021-12-07 00:31:57,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:57,633 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:57,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:57,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:57,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:57,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:57,655 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:57,655 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:31:57,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:57,656 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:57,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-12-07 00:31:57,657 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 [2021-12-07 00:31:57,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:57,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:57,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:57,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:57,665 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:31:57,665 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:31:57,667 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:57,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-12-07 00:31:57,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:57,686 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:57,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-12-07 00:31:57,687 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 [2021-12-07 00:31:57,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:57,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:57,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:57,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:57,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:57,694 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:31:57,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:57,695 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:57,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:57,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:57,714 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:57,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-12-07 00:31:57,715 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 [2021-12-07 00:31:57,722 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:57,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:57,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:57,722 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:57,724 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 00:31:57,724 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 00:31:57,727 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 00:31:57,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-12-07 00:31:57,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:57,745 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:57,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-12-07 00:31:57,746 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 [2021-12-07 00:31:57,754 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:57,755 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:57,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:57,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:57,755 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:57,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:31:57,756 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:57,758 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:31:57,760 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:31:57,760 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 00:31:57,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:57,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:57,761 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:57,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-12-07 00:31:57,762 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:31:57,762 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:31:57,762 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:31:57,762 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 9 Supporting invariants [] [2021-12-07 00:31:57,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-12-07 00:31:57,780 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:31:57,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:57,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:57,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:57,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:31:57,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:31:57,916 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-07 00:31:57,916 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 179 states and 191 transitions. cyclomatic complexity: 19 Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-12-07 00:31:57,935 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 179 states and 191 transitions. cyclomatic complexity: 19. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 228 states and 242 transitions. Complement of second has 7 states. [2021-12-07 00:31:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-12-07 00:31:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-12-07 00:31:57,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 47 letters. Loop has 44 letters. [2021-12-07 00:31:57,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:57,936 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:31:57,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:57,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:57,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:57,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:31:57,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:58,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2021-12-07 00:31:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:31:58,094 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-07 00:31:58,094 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 179 states and 191 transitions. cyclomatic complexity: 19 Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-12-07 00:31:58,127 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 179 states and 191 transitions. cyclomatic complexity: 19. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 238 states and 253 transitions. Complement of second has 11 states. [2021-12-07 00:31:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:58,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-12-07 00:31:58,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2021-12-07 00:31:58,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 47 letters. Loop has 44 letters. [2021-12-07 00:31:58,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:58,128 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:31:58,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:58,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:58,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:58,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:31:58,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:31:58,258 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 5 loop predicates [2021-12-07 00:31:58,258 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 179 states and 191 transitions. cyclomatic complexity: 19 Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-12-07 00:31:58,277 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 179 states and 191 transitions. cyclomatic complexity: 19. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 342 states and 359 transitions. Complement of second has 9 states. [2021-12-07 00:31:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-12-07 00:31:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-07 00:31:58,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 47 letters. Loop has 44 letters. [2021-12-07 00:31:58,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:58,279 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:31:58,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:58,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:58,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:58,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:31:58,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:58,410 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:31:58,410 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-07 00:31:58,410 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 179 states and 191 transitions. cyclomatic complexity: 19 Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-12-07 00:31:58,446 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 179 states and 191 transitions. cyclomatic complexity: 19. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 490 states and 514 transitions. Complement of second has 19 states. [2021-12-07 00:31:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-12-07 00:31:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2021-12-07 00:31:58,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 47 letters. Loop has 44 letters. [2021-12-07 00:31:58,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:58,448 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:31:58,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:58,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:58,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:58,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:31:58,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:31:58,589 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-07 00:31:58,590 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 179 states and 191 transitions. cyclomatic complexity: 19 Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-12-07 00:31:58,763 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 179 states and 191 transitions. cyclomatic complexity: 19 Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 2294 states and 2963 transitions. Complement of second has 166 states 20 powerset states146 rank states. The highest rank that occured is 5 [2021-12-07 00:31:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:58,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-12-07 00:31:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 70 transitions. [2021-12-07 00:31:58,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 70 transitions. Stem has 47 letters. Loop has 44 letters. [2021-12-07 00:31:58,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:58,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 70 transitions. Stem has 91 letters. Loop has 44 letters. [2021-12-07 00:31:58,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:58,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 70 transitions. Stem has 47 letters. Loop has 88 letters. [2021-12-07 00:31:58,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:58,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2294 states and 2963 transitions. [2021-12-07 00:31:58,805 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 96 [2021-12-07 00:31:58,814 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2294 states to 1175 states and 1510 transitions. [2021-12-07 00:31:58,814 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 100 [2021-12-07 00:31:58,815 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2021-12-07 00:31:58,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1175 states and 1510 transitions. [2021-12-07 00:31:58,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:58,815 INFO L681 BuchiCegarLoop]: Abstraction has 1175 states and 1510 transitions. [2021-12-07 00:31:58,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states and 1510 transitions. [2021-12-07 00:31:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 674. [2021-12-07 00:31:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 674 states have (on average 1.3902077151335313) internal successors, (937), 673 states have internal predecessors, (937), 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) [2021-12-07 00:31:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 937 transitions. [2021-12-07 00:31:58,836 INFO L704 BuchiCegarLoop]: Abstraction has 674 states and 937 transitions. [2021-12-07 00:31:58,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:58,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:31:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:31:58,836 INFO L87 Difference]: Start difference. First operand 674 states and 937 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-12-07 00:31:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:58,868 INFO L93 Difference]: Finished difference Result 802 states and 1128 transitions. [2021-12-07 00:31:58,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:31:58,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 802 states and 1128 transitions. [2021-12-07 00:31:58,873 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 98 [2021-12-07 00:31:58,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 802 states to 785 states and 1104 transitions. [2021-12-07 00:31:58,877 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-12-07 00:31:58,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2021-12-07 00:31:58,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 785 states and 1104 transitions. [2021-12-07 00:31:58,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:31:58,877 INFO L681 BuchiCegarLoop]: Abstraction has 785 states and 1104 transitions. [2021-12-07 00:31:58,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states and 1104 transitions. [2021-12-07 00:31:58,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 744. [2021-12-07 00:31:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 744 states have (on average 1.4045698924731183) internal successors, (1045), 743 states have internal predecessors, (1045), 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) [2021-12-07 00:31:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1045 transitions. [2021-12-07 00:31:58,888 INFO L704 BuchiCegarLoop]: Abstraction has 744 states and 1045 transitions. [2021-12-07 00:31:58,888 INFO L587 BuchiCegarLoop]: Abstraction has 744 states and 1045 transitions. [2021-12-07 00:31:58,888 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-12-07 00:31:58,888 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 744 states and 1045 transitions. [2021-12-07 00:31:58,890 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 90 [2021-12-07 00:31:58,891 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:31:58,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:31:58,892 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [16, 14, 14, 9, 6, 1, 1, 1, 1] [2021-12-07 00:31:58,892 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 9, 6, 1, 1] [2021-12-07 00:31:58,892 INFO L791 eck$LassoCheckResult]: Stem: 12934#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 12935#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 12939#L18-1 assume !!(main_~i~0#1 > 0); 13270#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 13120#L12-2 assume !(10 == main_~i~0#1); 13258#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13256#L18-1 assume !!(main_~i~0#1 > 0); 13254#L12 assume !(1 == main_~i~0#1); 13252#L12-2 assume !(10 == main_~i~0#1); 13250#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13248#L18-1 assume !!(main_~i~0#1 > 0); 13246#L12 assume !(1 == main_~i~0#1); 13244#L12-2 assume !(10 == main_~i~0#1); 13242#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13240#L18-1 assume !!(main_~i~0#1 > 0); 13238#L12 assume !(1 == main_~i~0#1); 13236#L12-2 assume !(10 == main_~i~0#1); 13234#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13232#L18-1 assume !!(main_~i~0#1 > 0); 13230#L12 assume !(1 == main_~i~0#1); 13228#L12-2 assume !(10 == main_~i~0#1); 13226#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13224#L18-1 assume !!(main_~i~0#1 > 0); 13222#L12 assume !(1 == main_~i~0#1); 13220#L12-2 assume !(10 == main_~i~0#1); 13218#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13216#L18-1 assume !!(main_~i~0#1 > 0); 13214#L12 assume !(1 == main_~i~0#1); 13212#L12-2 assume !(10 == main_~i~0#1); 13210#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13208#L18-1 assume !!(main_~i~0#1 > 0); 13206#L12 assume !(1 == main_~i~0#1); 13204#L12-2 assume !(10 == main_~i~0#1); 13203#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13202#L18-1 assume !!(main_~i~0#1 > 0); 13190#L12 assume !(1 == main_~i~0#1); 13198#L12-2 assume !(10 == main_~i~0#1); 13194#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13189#L18-1 assume !!(main_~i~0#1 > 0); 13188#L12 assume !(1 == main_~i~0#1); 13187#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 13146#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13185#L18-1 assume !!(main_~i~0#1 > 0); 13184#L12 assume !(1 == main_~i~0#1); 13183#L12-2 assume !(10 == main_~i~0#1); 13181#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13180#L18-1 assume !!(main_~i~0#1 > 0); 13179#L12 assume !(1 == main_~i~0#1); 13178#L12-2 assume !(10 == main_~i~0#1); 13176#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13175#L18-1 assume !!(main_~i~0#1 > 0); 13174#L12 assume !(1 == main_~i~0#1); 13173#L12-2 assume !(10 == main_~i~0#1); 13171#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13170#L18-1 assume !!(main_~i~0#1 > 0); 13169#L12 assume !(1 == main_~i~0#1); 13168#L12-2 assume !(10 == main_~i~0#1); 13166#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13165#L18-1 assume !!(main_~i~0#1 > 0); 13118#L12 assume !(1 == main_~i~0#1); 13145#L12-2 assume !(10 == main_~i~0#1); 13121#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13122#L18-1 assume !!(main_~i~0#1 > 0); 13266#L12 [2021-12-07 00:31:58,892 INFO L793 eck$LassoCheckResult]: Loop: 13266#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 13265#L12-2 assume !(10 == main_~i~0#1); 12946#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 12930#L18-1 assume !!(main_~i~0#1 > 0); 12931#L12 assume !(1 == main_~i~0#1); 12941#L12-2 assume !(10 == main_~i~0#1); 13665#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13663#L18-1 assume !!(main_~i~0#1 > 0); 13661#L12 assume !(1 == main_~i~0#1); 13659#L12-2 assume !(10 == main_~i~0#1); 13657#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13655#L18-1 assume !!(main_~i~0#1 > 0); 13653#L12 assume !(1 == main_~i~0#1); 13651#L12-2 assume !(10 == main_~i~0#1); 13649#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13647#L18-1 assume !!(main_~i~0#1 > 0); 13645#L12 assume !(1 == main_~i~0#1); 13643#L12-2 assume !(10 == main_~i~0#1); 13641#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13639#L18-1 assume !!(main_~i~0#1 > 0); 13637#L12 assume !(1 == main_~i~0#1); 13635#L12-2 assume !(10 == main_~i~0#1); 13633#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13631#L18-1 assume !!(main_~i~0#1 > 0); 13629#L12 assume !(1 == main_~i~0#1); 13627#L12-2 assume !(10 == main_~i~0#1); 13625#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13623#L18-1 assume !!(main_~i~0#1 > 0); 13621#L12 assume !(1 == main_~i~0#1); 13619#L12-2 assume !(10 == main_~i~0#1); 13617#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13615#L18-1 assume !!(main_~i~0#1 > 0); 13614#L12 assume !(1 == main_~i~0#1); 13613#L12-2 assume !(10 == main_~i~0#1); 13609#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 13610#L18-1 assume !!(main_~i~0#1 > 0); 13586#L12 assume !(1 == main_~i~0#1); 13587#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 13429#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13510#L18-1 assume !!(main_~i~0#1 > 0); 13506#L12 assume !(1 == main_~i~0#1); 13503#L12-2 assume !(10 == main_~i~0#1); 13496#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13493#L18-1 assume !!(main_~i~0#1 > 0); 13491#L12 assume !(1 == main_~i~0#1); 13490#L12-2 assume !(10 == main_~i~0#1); 13489#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13488#L18-1 assume !!(main_~i~0#1 > 0); 13486#L12 assume !(1 == main_~i~0#1); 13445#L12-2 assume !(10 == main_~i~0#1); 13446#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13487#L18-1 assume !!(main_~i~0#1 > 0); 13484#L12 assume !(1 == main_~i~0#1); 13450#L12-2 assume !(10 == main_~i~0#1); 13448#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13449#L18-1 assume !!(main_~i~0#1 > 0); 13434#L12 assume !(1 == main_~i~0#1); 13430#L12-2 assume !(10 == main_~i~0#1); 13272#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 13273#L18-1 assume !!(main_~i~0#1 > 0); 13266#L12 [2021-12-07 00:31:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash 912728085, now seen corresponding path program 6 times [2021-12-07 00:31:58,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:58,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765875000] [2021-12-07 00:31:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:58,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:58,899 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:58,905 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1190197230, now seen corresponding path program 4 times [2021-12-07 00:31:58,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:58,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601045746] [2021-12-07 00:31:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:58,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:58,911 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:31:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:31:58,917 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:31:58,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1444454914, now seen corresponding path program 7 times [2021-12-07 00:31:58,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:58,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304550597] [2021-12-07 00:31:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:58,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 1138 proven. 55 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-12-07 00:31:58,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:58,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304550597] [2021-12-07 00:31:58,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304550597] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:31:58,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85432745] [2021-12-07 00:31:58,978 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:31:58,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:31:58,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:58,979 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:31:58,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-12-07 00:31:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:31:59,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 1138 proven. 55 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-12-07 00:31:59,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:31:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 1138 proven. 55 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-12-07 00:31:59,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85432745] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:31:59,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:31:59,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2021-12-07 00:31:59,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415102892] [2021-12-07 00:31:59,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:31:59,357 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:59,357 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:59,357 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:59,357 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:59,357 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 00:31:59,357 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:59,357 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:59,357 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:59,357 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration12_Loop [2021-12-07 00:31:59,357 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:59,357 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:59,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:59,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:59,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:59,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:59,380 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:59,380 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 00:31:59,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:59,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:59,381 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:59,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-12-07 00:31:59,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:59,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:59,394 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 00:31:59,394 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_18=1} Honda state: {v_rep~unnamed0~0~true_18=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 00:31:59,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2021-12-07 00:31:59,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:59,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:59,413 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:59,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-12-07 00:31:59,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 00:31:59,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:59,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-12-07 00:31:59,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:59,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:59,440 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:59,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-12-07 00:31:59,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 00:31:59,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 00:31:59,451 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 00:31:59,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2021-12-07 00:31:59,469 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 00:31:59,469 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 00:31:59,469 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 00:31:59,469 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 00:31:59,469 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 00:31:59,469 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:59,469 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 00:31:59,469 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 00:31:59,469 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration12_Loop [2021-12-07 00:31:59,469 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 00:31:59,469 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 00:31:59,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:59,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:59,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:59,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 00:31:59,493 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 00:31:59,493 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 00:31:59,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:59,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:59,494 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:59,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-12-07 00:31:59,495 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 [2021-12-07 00:31:59,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 00:31:59,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 00:31:59,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 00:31:59,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 00:31:59,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 00:31:59,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 00:31:59,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 00:31:59,504 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 00:31:59,505 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 00:31:59,505 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 00:31:59,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 00:31:59,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:59,506 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 00:31:59,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-12-07 00:31:59,507 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 00:31:59,507 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 00:31:59,507 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 00:31:59,507 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 5 Supporting invariants [] [2021-12-07 00:31:59,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:59,525 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 00:31:59,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:59,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:31:59,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:59,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-12-07 00:31:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:31:59,745 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-12-07 00:31:59,745 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 744 states and 1045 transitions. cyclomatic complexity: 322 Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:31:59,770 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 744 states and 1045 transitions. cyclomatic complexity: 322. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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 1013 states and 1361 transitions. Complement of second has 7 states. [2021-12-07 00:31:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:31:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:31:59,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-12-07 00:31:59,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 63 letters. Loop has 60 letters. [2021-12-07 00:31:59,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:31:59,771 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:31:59,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:31:59,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:31:59,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:32:00,022 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2021-12-07 00:32:00,022 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 744 states and 1045 transitions. cyclomatic complexity: 322 Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:32:00,066 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 744 states and 1045 transitions. cyclomatic complexity: 322. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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 1057 states and 1423 transitions. Complement of second has 11 states. [2021-12-07 00:32:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-12-07 00:32:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:32:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2021-12-07 00:32:00,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 63 letters. Loop has 60 letters. [2021-12-07 00:32:00,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:32:00,068 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:32:00,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:00,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:32:00,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:00,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:32:00,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:32:00,325 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 9 loop predicates [2021-12-07 00:32:00,325 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 744 states and 1045 transitions. cyclomatic complexity: 322 Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:32:00,351 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 744 states and 1045 transitions. cyclomatic complexity: 322. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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 1553 states and 2121 transitions. Complement of second has 9 states. [2021-12-07 00:32:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 00:32:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:32:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-07 00:32:00,352 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 63 letters. Loop has 60 letters. [2021-12-07 00:32:00,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:32:00,352 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:32:00,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:00,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:32:00,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:00,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:32:00,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:32:00,595 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2021-12-07 00:32:00,596 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 744 states and 1045 transitions. cyclomatic complexity: 322 Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:32:00,645 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 744 states and 1045 transitions. cyclomatic complexity: 322. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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 2220 states and 3011 transitions. Complement of second has 19 states. [2021-12-07 00:32:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-12-07 00:32:00,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:32:00,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2021-12-07 00:32:00,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 63 letters. Loop has 60 letters. [2021-12-07 00:32:00,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:32:00,646 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 00:32:00,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:00,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:32:00,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:00,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:32:00,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-07 00:32:00,868 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-12-07 00:32:00,868 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 744 states and 1045 transitions. cyclomatic complexity: 322 Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:32:01,348 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 744 states and 1045 transitions. cyclomatic complexity: 322 Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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 12508 states and 21932 transitions. Complement of second has 282 states 36 powerset states246 rank states. The highest rank that occured is 5 [2021-12-07 00:32:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2021-12-07 00:32:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 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) [2021-12-07 00:32:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 110 transitions. [2021-12-07 00:32:01,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 110 transitions. Stem has 63 letters. Loop has 60 letters. [2021-12-07 00:32:01,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:32:01,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 110 transitions. Stem has 123 letters. Loop has 60 letters. [2021-12-07 00:32:01,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:32:01,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 110 transitions. Stem has 63 letters. Loop has 120 letters. [2021-12-07 00:32:01,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 00:32:01,359 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12508 states and 21932 transitions. [2021-12-07 00:32:01,449 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 248 [2021-12-07 00:32:01,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12508 states to 5535 states and 9788 transitions. [2021-12-07 00:32:01,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 330 [2021-12-07 00:32:01,486 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 575 [2021-12-07 00:32:01,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5535 states and 9788 transitions. [2021-12-07 00:32:01,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:32:01,486 INFO L681 BuchiCegarLoop]: Abstraction has 5535 states and 9788 transitions. [2021-12-07 00:32:01,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states and 9788 transitions. [2021-12-07 00:32:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 3406. [2021-12-07 00:32:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3406 states have (on average 1.8094539048737521) internal successors, (6163), 3405 states have internal predecessors, (6163), 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) [2021-12-07 00:32:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 6163 transitions. [2021-12-07 00:32:01,580 INFO L704 BuchiCegarLoop]: Abstraction has 3406 states and 6163 transitions. [2021-12-07 00:32:01,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:32:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:32:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:32:01,581 INFO L87 Difference]: Start difference. First operand 3406 states and 6163 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 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) [2021-12-07 00:32:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:32:01,631 INFO L93 Difference]: Finished difference Result 3793 states and 7008 transitions. [2021-12-07 00:32:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:32:01,632 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3793 states and 7008 transitions. [2021-12-07 00:32:01,649 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 168 [2021-12-07 00:32:01,673 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3793 states to 3761 states and 6917 transitions. [2021-12-07 00:32:01,673 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 238 [2021-12-07 00:32:01,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 238 [2021-12-07 00:32:01,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3761 states and 6917 transitions. [2021-12-07 00:32:01,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 00:32:01,674 INFO L681 BuchiCegarLoop]: Abstraction has 3761 states and 6917 transitions. [2021-12-07 00:32:01,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states and 6917 transitions. [2021-12-07 00:32:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3614. [2021-12-07 00:32:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3614 states have (on average 1.832595462091865) internal successors, (6623), 3613 states have internal predecessors, (6623), 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) [2021-12-07 00:32:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 6623 transitions. [2021-12-07 00:32:01,752 INFO L704 BuchiCegarLoop]: Abstraction has 3614 states and 6623 transitions. [2021-12-07 00:32:01,752 INFO L587 BuchiCegarLoop]: Abstraction has 3614 states and 6623 transitions. [2021-12-07 00:32:01,752 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-12-07 00:32:01,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3614 states and 6623 transitions. [2021-12-07 00:32:01,762 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 152 [2021-12-07 00:32:01,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 00:32:01,763 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 00:32:01,764 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [19, 17, 17, 9, 9, 1, 1, 1, 1] [2021-12-07 00:32:01,764 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 9, 9, 1, 1] [2021-12-07 00:32:01,764 INFO L791 eck$LassoCheckResult]: Stem: 42219#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 42220#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 42223#L18-1 assume !!(main_~i~0#1 > 0); 42475#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 43049#L12-2 assume !(10 == main_~i~0#1); 44280#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 44278#L18-1 assume !!(main_~i~0#1 > 0); 44276#L12 assume !(1 == main_~i~0#1); 44274#L12-2 assume !(10 == main_~i~0#1); 44272#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 44270#L18-1 assume !!(main_~i~0#1 > 0); 44268#L12 assume !(1 == main_~i~0#1); 44266#L12-2 assume !(10 == main_~i~0#1); 44264#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 44262#L18-1 assume !!(main_~i~0#1 > 0); 44260#L12 assume !(1 == main_~i~0#1); 44258#L12-2 assume !(10 == main_~i~0#1); 44256#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 44254#L18-1 assume !!(main_~i~0#1 > 0); 44252#L12 assume !(1 == main_~i~0#1); 44250#L12-2 assume !(10 == main_~i~0#1); 44248#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 44246#L18-1 assume !!(main_~i~0#1 > 0); 44244#L12 assume !(1 == main_~i~0#1); 44242#L12-2 assume !(10 == main_~i~0#1); 44240#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 44238#L18-1 assume !!(main_~i~0#1 > 0); 44236#L12 assume !(1 == main_~i~0#1); 44234#L12-2 assume !(10 == main_~i~0#1); 44232#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 44230#L18-1 assume !!(main_~i~0#1 > 0); 44228#L12 assume !(1 == main_~i~0#1); 44226#L12-2 assume !(10 == main_~i~0#1); 44224#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 44222#L18-1 assume !!(main_~i~0#1 > 0); 44219#L12 assume !(1 == main_~i~0#1); 44220#L12-2 assume !(10 == main_~i~0#1); 44213#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 44214#L18-1 assume !!(main_~i~0#1 > 0); 43809#L12 assume !(1 == main_~i~0#1); 43810#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 43752#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 43805#L18-1 assume !!(main_~i~0#1 > 0); 43806#L12 assume !(1 == main_~i~0#1); 43801#L12-2 assume !(10 == main_~i~0#1); 43802#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 43796#L18-1 assume !!(main_~i~0#1 > 0); 43797#L12 assume !(1 == main_~i~0#1); 44090#L12-2 assume !(10 == main_~i~0#1); 44088#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 44087#L18-1 assume !!(main_~i~0#1 > 0); 44086#L12 assume !(1 == main_~i~0#1); 43783#L12-2 assume !(10 == main_~i~0#1); 43784#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 44081#L18-1 assume !!(main_~i~0#1 > 0); 45435#L12 assume !(1 == main_~i~0#1); 45431#L12-2 assume !(10 == main_~i~0#1); 45426#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 44073#L18-1 assume !!(main_~i~0#1 > 0); 45389#L12 assume !(1 == main_~i~0#1); 45390#L12-2 assume !(10 == main_~i~0#1); 45485#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 44067#L18-1 assume !!(main_~i~0#1 > 0); 45499#L12 assume !(1 == main_~i~0#1); 45498#L12-2 assume !(10 == main_~i~0#1); 45488#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 45496#L18-1 assume !!(main_~i~0#1 > 0); 45493#L12 assume !(1 == main_~i~0#1); 45491#L12-2 assume !(10 == main_~i~0#1); 45490#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 44195#L18-1 assume !!(main_~i~0#1 > 0); 42948#L12 assume !(1 == main_~i~0#1); 44297#L12-2 assume !(10 == main_~i~0#1); 45482#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 42947#L18-1 assume !!(main_~i~0#1 > 0); 42946#L12 [2021-12-07 00:32:01,764 INFO L793 eck$LassoCheckResult]: Loop: 42946#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 42945#L12-2 assume !(10 == main_~i~0#1); 43888#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 42216#L18-1 assume !!(main_~i~0#1 > 0); 42217#L12 assume !(1 == main_~i~0#1); 42225#L12-2 assume !(10 == main_~i~0#1); 45821#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 45819#L18-1 assume !!(main_~i~0#1 > 0); 45817#L12 assume !(1 == main_~i~0#1); 45815#L12-2 assume !(10 == main_~i~0#1); 45813#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 45811#L18-1 assume !!(main_~i~0#1 > 0); 45809#L12 assume !(1 == main_~i~0#1); 45807#L12-2 assume !(10 == main_~i~0#1); 45805#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 45803#L18-1 assume !!(main_~i~0#1 > 0); 45801#L12 assume !(1 == main_~i~0#1); 45799#L12-2 assume !(10 == main_~i~0#1); 45797#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 45795#L18-1 assume !!(main_~i~0#1 > 0); 45793#L12 assume !(1 == main_~i~0#1); 45791#L12-2 assume !(10 == main_~i~0#1); 45789#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 45787#L18-1 assume !!(main_~i~0#1 > 0); 45785#L12 assume !(1 == main_~i~0#1); 45783#L12-2 assume !(10 == main_~i~0#1); 45781#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 45779#L18-1 assume !!(main_~i~0#1 > 0); 45777#L12 assume !(1 == main_~i~0#1); 45775#L12-2 assume !(10 == main_~i~0#1); 45773#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 45771#L18-1 assume !!(main_~i~0#1 > 0); 45769#L12 assume !(1 == main_~i~0#1); 45763#L12-2 assume !(10 == main_~i~0#1); 45762#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 45761#L18-1 assume !!(main_~i~0#1 > 0); 45725#L12 assume !(1 == main_~i~0#1); 45726#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 44284#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 45516#L18-1 assume !!(main_~i~0#1 > 0); 45479#L12 assume !(1 == main_~i~0#1); 45478#L12-2 assume !(10 == main_~i~0#1); 45476#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 45472#L18-1 assume !!(main_~i~0#1 > 0); 45468#L12 assume !(1 == main_~i~0#1); 45465#L12-2 assume !(10 == main_~i~0#1); 45463#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 45458#L18-1 assume !!(main_~i~0#1 > 0); 45459#L12 assume !(1 == main_~i~0#1); 45505#L12-2 assume !(10 == main_~i~0#1); 45449#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 45450#L18-1 assume !!(main_~i~0#1 > 0); 45495#L12 assume !(1 == main_~i~0#1); 45440#L12-2 assume !(10 == main_~i~0#1); 45428#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 45427#L18-1 assume !!(main_~i~0#1 > 0); 45396#L12 assume !(1 == main_~i~0#1); 45354#L12-2 assume !(10 == main_~i~0#1); 45348#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 45344#L18-1 assume !!(main_~i~0#1 > 0); 45345#L12 assume !(1 == main_~i~0#1); 45341#L12-2 assume !(10 == main_~i~0#1); 45339#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 45336#L18-1 assume !!(main_~i~0#1 > 0); 44368#L12 assume !(1 == main_~i~0#1); 44307#L12-2 assume !(10 == main_~i~0#1); 44308#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 44323#L18-1 assume !!(main_~i~0#1 > 0); 43934#L12 assume !(1 == main_~i~0#1); 44288#L12-2 assume !(10 == main_~i~0#1); 43293#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 43294#L18-1 assume !!(main_~i~0#1 > 0); 42946#L12 [2021-12-07 00:32:01,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:01,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1568126196, now seen corresponding path program 8 times [2021-12-07 00:32:01,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:32:01,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834365539] [2021-12-07 00:32:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:01,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:32:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:32:01,772 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:32:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:32:01,779 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:32:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:01,779 INFO L85 PathProgramCache]: Analyzing trace with hash 537366349, now seen corresponding path program 5 times [2021-12-07 00:32:01,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:32:01,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608974980] [2021-12-07 00:32:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:01,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:32:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:32:01,785 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:32:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:32:01,791 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:32:01,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:01,791 INFO L85 PathProgramCache]: Analyzing trace with hash 758614336, now seen corresponding path program 9 times [2021-12-07 00:32:01,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:32:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797637723] [2021-12-07 00:32:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:01,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:32:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:32:01,801 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:32:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:32:01,812 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:32:02,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:32:02 BoogieIcfgContainer [2021-12-07 00:32:02,234 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-07 00:32:02,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:32:02,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:32:02,235 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:32:02,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:31:52" (3/4) ... [2021-12-07 00:32:02,236 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-07 00:32:02,273 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:32:02,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:32:02,274 INFO L158 Benchmark]: Toolchain (without parser) took 9976.43ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 62.6MB in the beginning and 55.9MB in the end (delta: 6.6MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2021-12-07 00:32:02,274 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 98.6MB. Free memory was 78.7MB in the beginning and 78.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:32:02,274 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.74ms. Allocated memory is still 98.6MB. Free memory was 62.4MB in the beginning and 75.7MB in the end (delta: -13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 00:32:02,275 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.20ms. Allocated memory is still 98.6MB. Free memory was 75.7MB in the beginning and 74.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:32:02,275 INFO L158 Benchmark]: Boogie Preprocessor took 12.98ms. Allocated memory is still 98.6MB. Free memory was 74.6MB in the beginning and 73.6MB in the end (delta: 964.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:32:02,275 INFO L158 Benchmark]: RCFGBuilder took 162.53ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 65.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 00:32:02,276 INFO L158 Benchmark]: BuchiAutomizer took 9583.94ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 65.3MB in the beginning and 60.9MB in the end (delta: 4.4MB). Peak memory consumption was 82.7MB. Max. memory is 16.1GB. [2021-12-07 00:32:02,276 INFO L158 Benchmark]: Witness Printer took 39.21ms. Allocated memory is still 144.7MB. Free memory was 60.9MB in the beginning and 55.9MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-07 00:32:02,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 98.6MB. Free memory was 78.7MB in the beginning and 78.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.74ms. Allocated memory is still 98.6MB. Free memory was 62.4MB in the beginning and 75.7MB in the end (delta: -13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.20ms. Allocated memory is still 98.6MB. Free memory was 75.7MB in the beginning and 74.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.98ms. Allocated memory is still 98.6MB. Free memory was 74.6MB in the beginning and 73.6MB in the end (delta: 964.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 162.53ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 65.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 9583.94ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 65.3MB in the beginning and 60.9MB in the end (delta: 4.4MB). Peak memory consumption was 82.7MB. Max. memory is 16.1GB. * Witness Printer took 39.21ms. Allocated memory is still 144.7MB. Free memory was 60.9MB in the beginning and 55.9MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. 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 18 terminating modules (9 trivial, 6 deterministic, 3 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 21 and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -1 * i + 5 and consists of 6 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 9 and consists of 9 locations. One nondeterministic module has affine ranking function -2 * i + 5 and consists of 13 locations. 9 modules have a trivial ranking function, the largest among these consists of 11 locations. The remainder module has 3614 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.5s and 13 iterations. TraceHistogramMax:19. Analysis of lassos took 4.9s. Construction of modules took 0.3s. Büchi inclusion checks took 3.5s. Highest rank in rank-based complementation 5. Minimization of det autom 2. Minimization of nondet autom 16. Automata minimization 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 3069 StatesRemovedByMinimization, 15 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 3614 states and ocurred in iteration 12. Nontrivial modules had stage [5, 1, 1, 0, 2]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 741/820 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 426 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 391 mSDsluCounter, 237 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 775 IncrementalHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 207 mSDtfsCounter, 775 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT2 conc0 concLT3 SILN0 SILU0 SILI1 SILT3 lasso1 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax168 hnf96 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq190 hnf92 smp92 dnf133 smp95 tf107 neg95 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 59ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 12]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {i=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d2a1559=0, up=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 12]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND TRUE i == 10 [L16] up = 0 [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 Loop: [L12] COND TRUE i == 1 [L13] up = 1 [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND TRUE i == 10 [L16] up = 0 [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-07 00:32:02,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-12-07 00:32:02,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-12-07 00:32:02,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-12-07 00:32:02,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-12-07 00:32:03,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-07 00:32:03,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fdb16f8-85ca-4041-9975-89d39442b3b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)