./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:38:03,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:38:03,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:38:03,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:38:03,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:38:03,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:38:03,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:38:03,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:38:03,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:38:03,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:38:03,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:38:03,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:38:03,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:38:03,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:38:03,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:38:03,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:38:03,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:38:03,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:38:03,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:38:03,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:38:03,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:38:03,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:38:03,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:38:03,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:38:03,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:38:03,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:38:03,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:38:03,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:38:03,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:38:03,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:38:03,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:38:03,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:38:03,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:38:03,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:38:03,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:38:03,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:38:03,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:38:03,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:38:03,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:38:03,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:38:03,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:38:03,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-20 12:38:03,563 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:38:03,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:38:03,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:38:03,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:38:03,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:38:03,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:38:03,566 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:38:03,566 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 12:38:03,566 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 12:38:03,567 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 12:38:03,567 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 12:38:03,567 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 12:38:03,568 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 12:38:03,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:38:03,568 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:38:03,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:38:03,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:38:03,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 12:38:03,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 12:38:03,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 12:38:03,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:38:03,570 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 12:38:03,571 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:38:03,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 12:38:03,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:38:03,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:38:03,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:38:03,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:38:03,573 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 12:38:03,573 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_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 [2022-11-20 12:38:03,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:38:03,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:38:03,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:38:03,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:38:03,891 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:38:03,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-restricted-15/Ex08.c [2022-11-20 12:38:07,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:38:07,245 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:38:07,246 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/sv-benchmarks/c/termination-restricted-15/Ex08.c [2022-11-20 12:38:07,251 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/data/0b2db2959/3a3be3fe53564b148b9e8611e049626b/FLAG5835fe9eb [2022-11-20 12:38:07,267 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/data/0b2db2959/3a3be3fe53564b148b9e8611e049626b [2022-11-20 12:38:07,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:38:07,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:38:07,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:38:07,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:38:07,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:38:07,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130d144c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07, skipping insertion in model container [2022-11-20 12:38:07,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:38:07,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:38:07,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:38:07,437 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:38:07,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:38:07,461 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:38:07,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07 WrapperNode [2022-11-20 12:38:07,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:38:07,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:38:07,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:38:07,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:38:07,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,499 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-20 12:38:07,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:38:07,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:38:07,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:38:07,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:38:07,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,524 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:38:07,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:38:07,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:38:07,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:38:07,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (1/1) ... [2022-11-20 12:38:07,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:07,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:07,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:07,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 12:38:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:38:07,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:38:07,690 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:38:07,692 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:38:07,757 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:38:07,765 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:38:07,765 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:38:07,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:38:07 BoogieIcfgContainer [2022-11-20 12:38:07,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:38:07,768 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 12:38:07,769 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 12:38:07,773 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 12:38:07,774 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:38:07,774 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:38:07" (1/3) ... [2022-11-20 12:38:07,775 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a5fbbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:38:07, skipping insertion in model container [2022-11-20 12:38:07,775 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:38:07,776 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:38:07" (2/3) ... [2022-11-20 12:38:07,776 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a5fbbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:38:07, skipping insertion in model container [2022-11-20 12:38:07,776 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:38:07,776 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:38:07" (3/3) ... [2022-11-20 12:38:07,778 INFO L332 chiAutomizerObserver]: Analyzing ICFG Ex08.c [2022-11-20 12:38:07,840 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 12:38:07,840 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 12:38:07,840 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 12:38:07,840 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 12:38:07,840 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 12:38:07,841 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 12:38:07,841 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 12:38:07,841 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 12:38:07,846 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) [2022-11-20 12:38:07,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 12:38:07,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:07,882 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:07,888 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 12:38:07,888 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:38:07,888 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 12:38:07,888 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) [2022-11-20 12:38:07,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 12:38:07,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:07,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:07,890 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 12:38:07,890 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:38:07,897 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#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; 5#L18-1true [2022-11-20 12:38:07,898 INFO L750 eck$LassoCheckResult]: Loop: 5#L18-1true assume !!(main_~i~0#1 > 0); 10#L12true assume !(1 == main_~i~0#1); 2#L12-2true assume 10 == main_~i~0#1;main_~up~0#1 := 0; 7#L15-1true assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5#L18-1true [2022-11-20 12:38:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:07,904 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-20 12:38:07,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:07,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552424383] [2022-11-20 12:38:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:07,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:07,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:08,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:08,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2022-11-20 12:38:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:08,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541616967] [2022-11-20 12:38:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:08,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:08,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:08,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541616967] [2022-11-20 12:38:08,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541616967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:08,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:08,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:38:08,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929271925] [2022-11-20 12:38:08,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:08,167 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 12:38:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:08,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:38:08,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:38:08,225 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) [2022-11-20 12:38:08,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:08,265 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-11-20 12:38:08,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2022-11-20 12:38:08,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-20 12:38:08,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 10 states and 15 transitions. [2022-11-20 12:38:08,277 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-11-20 12:38:08,278 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-20 12:38:08,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2022-11-20 12:38:08,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:08,280 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 15 transitions. [2022-11-20 12:38:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2022-11-20 12:38:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-20 12:38:08,309 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) [2022-11-20 12:38:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2022-11-20 12:38:08,312 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 15 transitions. [2022-11-20 12:38:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:38:08,323 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2022-11-20 12:38:08,323 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 12:38:08,323 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2022-11-20 12:38:08,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-20 12:38:08,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:08,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:08,325 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 12:38:08,325 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:38:08,325 INFO L748 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 41#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 44#L18-1 [2022-11-20 12:38:08,326 INFO L750 eck$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 [2022-11-20 12:38:08,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:08,328 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-20 12:38:08,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:08,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716858101] [2022-11-20 12:38:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:08,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:08,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:08,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:08,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1265324, now seen corresponding path program 1 times [2022-11-20 12:38:08,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:08,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329280478] [2022-11-20 12:38:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:08,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:08,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:08,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329280478] [2022-11-20 12:38:08,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329280478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:08,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:08,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:38:08,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418149963] [2022-11-20 12:38:08,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:08,413 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 12:38:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:38:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:38:08,415 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) [2022-11-20 12:38:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:08,440 INFO L93 Difference]: Finished difference Result 14 states and 21 transitions. [2022-11-20 12:38:08,440 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 21 transitions. [2022-11-20 12:38:08,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 12:38:08,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 21 transitions. [2022-11-20 12:38:08,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-11-20 12:38:08,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2022-11-20 12:38:08,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2022-11-20 12:38:08,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:38:08,444 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2022-11-20 12:38:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2022-11-20 12:38:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-20 12:38:08,446 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) [2022-11-20 12:38:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2022-11-20 12:38:08,471 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2022-11-20 12:38:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:38:08,473 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2022-11-20 12:38:08,473 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 12:38:08,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2022-11-20 12:38:08,474 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 12:38:08,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:08,475 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:08,475 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 12:38:08,475 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:38:08,476 INFO L748 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 [2022-11-20 12:38:08,476 INFO L750 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 [2022-11-20 12:38:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2022-11-20 12:38:08,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:08,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952544431] [2022-11-20 12:38:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:08,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:08,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:08,485 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:08,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:08,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1267246, now seen corresponding path program 1 times [2022-11-20 12:38:08,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:08,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010721207] [2022-11-20 12:38:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:08,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:08,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:08,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:08,501 INFO L85 PathProgramCache]: Analyzing trace with hash 889694448, now seen corresponding path program 1 times [2022-11-20 12:38:08,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:08,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377856547] [2022-11-20 12:38:08,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:08,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:08,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:08,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:08,575 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:08,575 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:08,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:08,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:08,576 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:38:08,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:08,576 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:08,577 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:08,577 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2022-11-20 12:38:08,577 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:08,577 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:08,596 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:08,624 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:08,628 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:08,637 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:08,744 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:08,745 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:38:08,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:08,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:08,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:08,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 12:38:08,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:08,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:08,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:08,799 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: [] [2022-11-20 12:38:08,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:08,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:08,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:08,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:08,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:08,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:08,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 12:38:08,855 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:08,855 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: [] [2022-11-20 12:38:08,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:08,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:08,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:08,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:08,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:08,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:08,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 12:38:08,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:08,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:08,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:08,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:08,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 12:38:08,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:38:08,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:08,962 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:38:08,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:08,967 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:08,968 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:08,968 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:08,968 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:08,968 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:38:08,968 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:08,968 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:08,968 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:08,969 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2022-11-20 12:38:08,969 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:08,969 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:08,971 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:08,975 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:08,980 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:08,984 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:09,042 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:09,047 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:38:09,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:09,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:09,050 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:09,060 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 [2022-11-20 12:38:09,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 12:38:09,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:09,075 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:38:09,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:09,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:09,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:09,078 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:38:09,079 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:38:09,089 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:38:09,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:09,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:09,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:09,100 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:09,104 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 [2022-11-20 12:38:09,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 12:38:09,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:09,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:09,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:09,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:09,123 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:38:09,123 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:38:09,135 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:38:09,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-11-20 12:38:09,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:09,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:09,151 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:09,164 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 [2022-11-20 12:38:09,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 12:38:09,177 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:09,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:09,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:09,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:09,182 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:38:09,182 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:38:09,210 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:38:09,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:09,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:09,224 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:09,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 12:38:09,228 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 [2022-11-20 12:38:09,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:09,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:38:09,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:09,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:09,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:09,244 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:38:09,244 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:38:09,260 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:38:09,264 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:38:09,265 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 12:38:09,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:09,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:09,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:09,296 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:38:09,296 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:38:09,297 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:38:09,297 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 [] [2022-11-20 12:38:09,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 12:38:09,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:09,315 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:38:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:09,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:09,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:09,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:38:09,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:09,427 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 12:38:09,429 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) [2022-11-20 12:38:09,498 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. [2022-11-20 12:38:09,500 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 [2022-11-20 12:38:09,503 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) [2022-11-20 12:38:09,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2022-11-20 12:38:09,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-20 12:38:09,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:09,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-20 12:38:09,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:09,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2022-11-20 12:38:09,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:09,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 51 transitions. [2022-11-20 12:38:09,518 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2022-11-20 12:38:09,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 30 states and 44 transitions. [2022-11-20 12:38:09,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-20 12:38:09,522 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2022-11-20 12:38:09,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 44 transitions. [2022-11-20 12:38:09,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:09,523 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 44 transitions. [2022-11-20 12:38:09,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 44 transitions. [2022-11-20 12:38:09,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-11-20 12:38:09,529 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) [2022-11-20 12:38:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2022-11-20 12:38:09,534 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 36 transitions. [2022-11-20 12:38:09,534 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2022-11-20 12:38:09,534 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 12:38:09,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 36 transitions. [2022-11-20 12:38:09,536 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2022-11-20 12:38:09,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:09,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:09,538 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 12:38:09,538 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:38:09,538 INFO L748 eck$LassoCheckResult]: Stem: 166#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 167#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; 169#L18-1 assume !!(main_~i~0#1 > 0); 163#L12 [2022-11-20 12:38:09,538 INFO L750 eck$LassoCheckResult]: Loop: 163#L12 assume !(1 == main_~i~0#1); 179#L12-2 assume !(10 == main_~i~0#1); 168#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 162#L18-1 assume !!(main_~i~0#1 > 0); 163#L12 [2022-11-20 12:38:09,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-20 12:38:09,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:09,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835443882] [2022-11-20 12:38:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:09,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:09,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:09,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1422198, now seen corresponding path program 1 times [2022-11-20 12:38:09,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:09,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938271088] [2022-11-20 12:38:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:09,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:09,576 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:09,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:09,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:09,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1810726045, now seen corresponding path program 1 times [2022-11-20 12:38:09,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:09,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89586509] [2022-11-20 12:38:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:09,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:09,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:09,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:09,655 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:09,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:09,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:09,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:09,656 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:38:09,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:09,657 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:09,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:09,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2022-11-20 12:38:09,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:09,657 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:09,659 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:09,663 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:09,672 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:09,676 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:09,766 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:09,766 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:38:09,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:09,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:09,768 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:09,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:09,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:09,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 12:38:09,809 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:09,809 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: [] [2022-11-20 12:38:09,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:09,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:09,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:09,815 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:09,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:09,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:09,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 12:38:09,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:09,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:09,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:09,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:09,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 12:38:09,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:38:09,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:09,959 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:38:09,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:09,968 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:09,969 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:09,969 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:09,969 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:09,969 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:38:09,969 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:09,969 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:09,969 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:09,969 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2022-11-20 12:38:09,970 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:09,970 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:09,971 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:09,978 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:09,990 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:09,996 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:10,109 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:10,109 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:38:10,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:10,111 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:10,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 12:38:10,135 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 [2022-11-20 12:38:10,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:10,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:10,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:10,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:10,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:10,150 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:38:10,151 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:38:10,162 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:38:10,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-11-20 12:38:10,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:10,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:10,178 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:10,187 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 [2022-11-20 12:38:10,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:10,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:38:10,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:10,200 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 12:38:10,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:10,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 12:38:10,202 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-20 12:38:10,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:38:10,213 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:38:10,217 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:38:10,217 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 12:38:10,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:10,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:10,219 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:10,232 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:38:10,232 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:38:10,232 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:38:10,232 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 [] [2022-11-20 12:38:10,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 12:38:10,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:10,242 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:38:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:10,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:10,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:10,283 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:38:10,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:10,331 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 12:38:10,332 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) [2022-11-20 12:38:10,383 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. [2022-11-20 12:38:10,384 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 [2022-11-20 12:38:10,385 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) [2022-11-20 12:38:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-20 12:38:10,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-20 12:38:10,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:10,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-20 12:38:10,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:10,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-20 12:38:10,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:10,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 59 transitions. [2022-11-20 12:38:10,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 12:38:10,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 32 states and 49 transitions. [2022-11-20 12:38:10,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-20 12:38:10,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-20 12:38:10,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 49 transitions. [2022-11-20 12:38:10,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:10,397 INFO L218 hiAutomatonCegarLoop]: Abstraction has 32 states and 49 transitions. [2022-11-20 12:38:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 49 transitions. [2022-11-20 12:38:10,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-20 12:38:10,403 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) [2022-11-20 12:38:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 49 transitions. [2022-11-20 12:38:10,407 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 49 transitions. [2022-11-20 12:38:10,407 INFO L428 stractBuchiCegarLoop]: Abstraction has 32 states and 49 transitions. [2022-11-20 12:38:10,407 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 12:38:10,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 49 transitions. [2022-11-20 12:38:10,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 12:38:10,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:10,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:10,410 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-20 12:38:10,410 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:38:10,411 INFO L748 eck$LassoCheckResult]: Stem: 275#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 276#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; 279#L18-1 assume !!(main_~i~0#1 > 0); 282#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 284#L12-2 assume !(10 == main_~i~0#1); 289#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 290#L18-1 [2022-11-20 12:38:10,411 INFO L750 eck$LassoCheckResult]: Loop: 290#L18-1 assume !!(main_~i~0#1 > 0); 297#L12 assume !(1 == main_~i~0#1); 291#L12-2 assume !(10 == main_~i~0#1); 292#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 290#L18-1 [2022-11-20 12:38:10,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:10,411 INFO L85 PathProgramCache]: Analyzing trace with hash 889692586, now seen corresponding path program 1 times [2022-11-20 12:38:10,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:10,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702027096] [2022-11-20 12:38:10,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:10,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:10,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:10,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1267306, now seen corresponding path program 1 times [2022-11-20 12:38:10,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:10,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055039474] [2022-11-20 12:38:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:10,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:10,445 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:10,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:10,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:10,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1068497811, now seen corresponding path program 1 times [2022-11-20 12:38:10,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:10,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948167580] [2022-11-20 12:38:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:10,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:10,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:10,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:10,516 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:10,516 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:10,516 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:10,516 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:10,516 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:38:10,516 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:10,516 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:10,516 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:10,517 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Loop [2022-11-20 12:38:10,517 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:10,517 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:10,526 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:10,529 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:10,532 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:10,544 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:10,668 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:10,668 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:38:10,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:10,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:10,669 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:10,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:10,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:10,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 12:38:10,699 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:10,699 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: [] [2022-11-20 12:38:10,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:10,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:10,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:10,710 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:10,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:10,720 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:10,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 12:38:10,751 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:10,751 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: [] [2022-11-20 12:38:10,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:10,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:10,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:10,764 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:10,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 12:38:10,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:10,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:10,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:10,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:10,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:10,800 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:10,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:38:10,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:10,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 12:38:10,843 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:10,843 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0#1=14} Honda state: {ULTIMATE.start_main_~i~0#1=14} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0#1=0}, {ULTIMATE.start_main_~i~0#1=1}, {ULTIMATE.start_main_~i~0#1=0}] Lambdas: [0, 1, 5] Nus: [0, 1] [2022-11-20 12:38:10,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:10,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:10,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:10,854 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:10,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:10,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:10,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 12:38:10,903 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:10,903 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: [] [2022-11-20 12:38:10,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:10,950 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:10,950 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:10,950 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:10,950 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:10,951 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:38:10,951 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:10,951 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:10,951 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:10,951 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2022-11-20 12:38:10,951 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:10,951 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:10,954 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:10,961 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:10,974 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:10,977 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:10,981 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:10,987 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:11,133 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:11,135 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:38:11,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:11,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:11,138 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:11,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:11,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:11,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 12:38:11,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:11,179 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: [] [2022-11-20 12:38:11,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:11,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:11,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:11,192 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:11,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:11,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:11,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 12:38:11,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:11,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:11,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:11,240 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:11,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:38:11,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:11,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 12:38:11,278 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:38:11,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:11,282 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:11,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:11,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:11,283 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:11,283 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:38:11,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:11,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:11,283 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:11,283 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2022-11-20 12:38:11,283 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:11,283 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:11,284 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:11,287 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:11,304 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:11,308 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:11,312 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:11,317 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:11,448 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:11,449 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:38:11,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:11,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:11,452 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:11,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 12:38:11,460 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 [2022-11-20 12:38:11,473 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:11,473 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:38:11,473 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:11,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:11,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:11,474 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:38:11,474 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:38:11,483 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:38:11,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:11,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:11,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:11,489 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:11,492 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 [2022-11-20 12:38:11,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 12:38:11,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:11,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:11,506 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 12:38:11,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:11,514 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2022-11-20 12:38:11,514 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2022-11-20 12:38:11,536 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:38:11,583 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2022-11-20 12:38:11,583 INFO L444 ModelExtractionUtils]: 0 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. [2022-11-20 12:38:11,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:11,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:11,589 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:11,591 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:38:11,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 12:38:11,611 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2022-11-20 12:38:11,611 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:38:11,612 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] [2022-11-20 12:38:11,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:11,622 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2022-11-20 12:38:11,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:11,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:38:11,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:11,689 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:38:11,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:11,727 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2022-11-20 12:38:11,727 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) [2022-11-20 12:38:11,793 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. [2022-11-20 12:38:11,794 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 [2022-11-20 12:38:11,795 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) [2022-11-20 12:38:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-11-20 12:38:11,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-20 12:38:11,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:11,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-20 12:38:11,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:11,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 6 letters. Loop has 8 letters. [2022-11-20 12:38:11,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:11,797 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2022-11-20 12:38:11,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 12:38:11,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 45 states and 67 transitions. [2022-11-20 12:38:11,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-11-20 12:38:11,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-20 12:38:11,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 67 transitions. [2022-11-20 12:38:11,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:11,799 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 67 transitions. [2022-11-20 12:38:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 67 transitions. [2022-11-20 12:38:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2022-11-20 12:38:11,802 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) [2022-11-20 12:38:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 64 transitions. [2022-11-20 12:38:11,803 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 64 transitions. [2022-11-20 12:38:11,803 INFO L428 stractBuchiCegarLoop]: Abstraction has 42 states and 64 transitions. [2022-11-20 12:38:11,803 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 12:38:11,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 64 transitions. [2022-11-20 12:38:11,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 12:38:11,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:11,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:11,805 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:38:11,805 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:38:11,805 INFO L748 eck$LassoCheckResult]: Stem: 418#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 419#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; 423#L18-1 assume !!(main_~i~0#1 > 0); 432#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 429#L12-2 assume !(10 == main_~i~0#1); 428#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 427#L18-1 assume !!(main_~i~0#1 > 0); 424#L12 assume !(1 == main_~i~0#1); 425#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 449#L15-1 [2022-11-20 12:38:11,805 INFO L750 eck$LassoCheckResult]: Loop: 449#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 414#L18-1 assume !!(main_~i~0#1 > 0); 415#L12 assume !(1 == main_~i~0#1); 448#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 449#L15-1 [2022-11-20 12:38:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 588656997, now seen corresponding path program 1 times [2022-11-20 12:38:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:11,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380165446] [2022-11-20 12:38:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:11,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:11,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380165446] [2022-11-20 12:38:11,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380165446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:38:11,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258823880] [2022-11-20 12:38:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:11,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:38:11,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:11,843 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:38:11,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 12:38:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:11,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:38:11,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:11,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:38:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:11,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258823880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:38:11,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:38:11,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-20 12:38:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902665623] [2022-11-20 12:38:11,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:38:11,979 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:38:11,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:11,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1768756, now seen corresponding path program 2 times [2022-11-20 12:38:11,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:11,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535793162] [2022-11-20 12:38:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:11,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:11,985 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:11,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-11-20 12:38:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:12,017 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:12,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:12,049 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:12,049 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:12,049 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:12,050 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:12,050 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:38:12,050 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:12,050 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:12,050 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:12,050 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2022-11-20 12:38:12,050 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:12,050 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:12,052 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,058 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,064 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,067 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,148 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:12,148 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:38:12,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:12,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:12,150 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:12,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-20 12:38:12,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:12,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:12,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-11-20 12:38:12,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:12,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:12,171 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:12,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:38:12,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:12,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-20 12:38:12,310 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:38:12,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:12,320 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:12,320 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:12,320 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:12,320 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:12,320 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:38:12,320 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:12,320 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:12,320 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:12,320 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2022-11-20 12:38:12,320 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:12,321 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:12,322 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,331 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,338 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,342 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,413 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:12,413 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:38:12,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:12,420 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:12,428 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 [2022-11-20 12:38:12,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 12:38:12,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:12,442 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:38:12,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:12,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:12,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:12,444 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:38:12,444 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:38:12,454 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:38:12,459 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:38:12,459 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 12:38:12,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:12,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:12,463 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:12,470 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:38:12,470 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:38:12,470 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:38:12,470 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 [] [2022-11-20 12:38:12,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-20 12:38:12,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:12,476 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:38:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:12,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:12,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:12,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:38:12,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:12,544 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 12:38:12,544 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) [2022-11-20 12:38:12,575 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. [2022-11-20 12:38:12,576 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 [2022-11-20 12:38:12,576 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) [2022-11-20 12:38:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-20 12:38:12,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2022-11-20 12:38:12,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:12,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 13 letters. Loop has 4 letters. [2022-11-20 12:38:12,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:12,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2022-11-20 12:38:12,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:12,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 160 transitions. [2022-11-20 12:38:12,581 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-20 12:38:12,582 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 87 states and 133 transitions. [2022-11-20 12:38:12,582 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2022-11-20 12:38:12,582 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2022-11-20 12:38:12,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 133 transitions. [2022-11-20 12:38:12,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:12,583 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 133 transitions. [2022-11-20 12:38:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 133 transitions. [2022-11-20 12:38:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2022-11-20 12:38:12,588 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) [2022-11-20 12:38:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 127 transitions. [2022-11-20 12:38:12,589 INFO L240 hiAutomatonCegarLoop]: Abstraction has 82 states and 127 transitions. [2022-11-20 12:38:12,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:12,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:38:12,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:38:12,591 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) [2022-11-20 12:38:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:12,646 INFO L93 Difference]: Finished difference Result 160 states and 239 transitions. [2022-11-20 12:38:12,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 239 transitions. [2022-11-20 12:38:12,649 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2022-11-20 12:38:12,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 160 states and 239 transitions. [2022-11-20 12:38:12,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2022-11-20 12:38:12,652 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2022-11-20 12:38:12,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 239 transitions. [2022-11-20 12:38:12,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:12,652 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 239 transitions. [2022-11-20 12:38:12,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 239 transitions. [2022-11-20 12:38:12,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 136. [2022-11-20 12:38:12,661 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) [2022-11-20 12:38:12,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 207 transitions. [2022-11-20 12:38:12,663 INFO L240 hiAutomatonCegarLoop]: Abstraction has 136 states and 207 transitions. [2022-11-20 12:38:12,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:38:12,664 INFO L428 stractBuchiCegarLoop]: Abstraction has 136 states and 207 transitions. [2022-11-20 12:38:12,664 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-20 12:38:12,664 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 136 states and 207 transitions. [2022-11-20 12:38:12,666 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-11-20 12:38:12,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:12,667 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:12,667 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2022-11-20 12:38:12,667 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:38:12,668 INFO L748 eck$LassoCheckResult]: Stem: 920#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 921#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 926#L18-1 assume !!(main_~i~0#1 > 0); 985#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 945#L12-2 assume !(10 == main_~i~0#1); 946#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 994#L18-1 assume !!(main_~i~0#1 > 0); 991#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 944#L12-2 assume !(10 == main_~i~0#1); 983#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 964#L18-1 [2022-11-20 12:38:12,668 INFO L750 eck$LassoCheckResult]: Loop: 964#L18-1 assume !!(main_~i~0#1 > 0); 978#L12 assume !(1 == main_~i~0#1); 957#L12-2 assume !(10 == main_~i~0#1); 969#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 964#L18-1 [2022-11-20 12:38:12,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1068495891, now seen corresponding path program 1 times [2022-11-20 12:38:12,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:12,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82061224] [2022-11-20 12:38:12,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:12,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:12,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:12,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82061224] [2022-11-20 12:38:12,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82061224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:12,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:12,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:38:12,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587271832] [2022-11-20 12:38:12,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:12,743 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:38:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1267308, now seen corresponding path program 2 times [2022-11-20 12:38:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:12,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8760950] [2022-11-20 12:38:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:12,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:12,749 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:12,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:12,790 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:12,790 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:12,790 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:12,790 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:12,791 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:38:12,791 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:12,791 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:12,791 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:12,791 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration7_Loop [2022-11-20 12:38:12,791 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:12,791 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:12,793 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,802 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,806 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,809 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:12,903 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:12,904 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:38:12,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:12,908 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:12,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:12,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:12,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-20 12:38:12,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:12,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:12,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:12,954 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:12,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:38:12,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:12,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-20 12:38:12,995 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:38:13,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:13,004 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:13,004 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:13,004 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:13,004 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:13,004 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:38:13,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:13,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:13,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:13,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration7_Loop [2022-11-20 12:38:13,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:13,005 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:13,005 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,015 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,019 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,022 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,128 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:13,128 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:38:13,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:13,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:13,132 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:13,140 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 [2022-11-20 12:38:13,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-20 12:38:13,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:13,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:38:13,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:13,155 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 12:38:13,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:13,158 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-20 12:38:13,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:38:13,168 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:38:13,172 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:38:13,172 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 12:38:13,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:13,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:13,177 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:13,179 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:38:13,179 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:38:13,179 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:38:13,179 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 [] [2022-11-20 12:38:13,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-20 12:38:13,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:13,188 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:38:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:13,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:13,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:13,236 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:38:13,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:13,271 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 12:38:13,271 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) [2022-11-20 12:38:13,315 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. [2022-11-20 12:38:13,316 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 [2022-11-20 12:38:13,318 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) [2022-11-20 12:38:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2022-11-20 12:38:13,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-20 12:38:13,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:13,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2022-11-20 12:38:13,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:13,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 8 letters. [2022-11-20 12:38:13,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:13,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 248 states and 381 transitions. [2022-11-20 12:38:13,328 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-11-20 12:38:13,332 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 248 states to 224 states and 333 transitions. [2022-11-20 12:38:13,332 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 101 [2022-11-20 12:38:13,332 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 112 [2022-11-20 12:38:13,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 333 transitions. [2022-11-20 12:38:13,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:13,333 INFO L218 hiAutomatonCegarLoop]: Abstraction has 224 states and 333 transitions. [2022-11-20 12:38:13,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 333 transitions. [2022-11-20 12:38:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 202. [2022-11-20 12:38:13,350 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) [2022-11-20 12:38:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2022-11-20 12:38:13,353 INFO L240 hiAutomatonCegarLoop]: Abstraction has 202 states and 304 transitions. [2022-11-20 12:38:13,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:13,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:13,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:13,355 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) [2022-11-20 12:38:13,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:13,385 INFO L93 Difference]: Finished difference Result 230 states and 313 transitions. [2022-11-20 12:38:13,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 230 states and 313 transitions. [2022-11-20 12:38:13,388 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 58 [2022-11-20 12:38:13,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 230 states to 230 states and 313 transitions. [2022-11-20 12:38:13,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2022-11-20 12:38:13,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2022-11-20 12:38:13,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 230 states and 313 transitions. [2022-11-20 12:38:13,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:13,393 INFO L218 hiAutomatonCegarLoop]: Abstraction has 230 states and 313 transitions. [2022-11-20 12:38:13,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states and 313 transitions. [2022-11-20 12:38:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 201. [2022-11-20 12:38:13,410 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) [2022-11-20 12:38:13,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2022-11-20 12:38:13,419 INFO L240 hiAutomatonCegarLoop]: Abstraction has 201 states and 278 transitions. [2022-11-20 12:38:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:13,422 INFO L428 stractBuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2022-11-20 12:38:13,422 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-20 12:38:13,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 278 transitions. [2022-11-20 12:38:13,426 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2022-11-20 12:38:13,426 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:13,426 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:13,428 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 12:38:13,428 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 12:38:13,428 INFO L748 eck$LassoCheckResult]: Stem: 1793#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1794#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; 1802#L18-1 assume !!(main_~i~0#1 > 0); 1817#L12 assume !(1 == main_~i~0#1); 1820#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1819#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1815#L18-1 assume !!(main_~i~0#1 > 0); 1816#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 1949#L12-2 assume !(10 == main_~i~0#1); 1825#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1805#L18-1 assume !!(main_~i~0#1 > 0); 1806#L12 assume !(1 == main_~i~0#1); 1988#L12-2 assume !(10 == main_~i~0#1); 1809#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1795#L18-1 [2022-11-20 12:38:13,428 INFO L750 eck$LassoCheckResult]: Loop: 1795#L18-1 assume !!(main_~i~0#1 > 0); 1796#L12 assume !(1 == main_~i~0#1); 1803#L12-2 assume !(10 == main_~i~0#1); 1810#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1795#L18-1 [2022-11-20 12:38:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:13,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1454758974, now seen corresponding path program 1 times [2022-11-20 12:38:13,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:13,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80624285] [2022-11-20 12:38:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:13,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:38:13,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:13,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80624285] [2022-11-20 12:38:13,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80624285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:13,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:13,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:38:13,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897670115] [2022-11-20 12:38:13,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:13,501 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:38:13,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:13,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1267308, now seen corresponding path program 3 times [2022-11-20 12:38:13,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:13,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513332582] [2022-11-20 12:38:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:13,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:13,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:13,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:13,537 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:13,537 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:13,537 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:13,537 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:13,538 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:38:13,538 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:13,538 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:13,538 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:13,538 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2022-11-20 12:38:13,538 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:13,538 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:13,539 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,543 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,546 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,549 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,641 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:13,642 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:38:13,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:13,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:13,645 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:13,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:13,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:13,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-20 12:38:13,676 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:13,676 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: [] [2022-11-20 12:38:13,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-11-20 12:38:13,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:13,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:13,680 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:13,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-20 12:38:13,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:13,685 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:13,704 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:13,704 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: [] [2022-11-20 12:38:13,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:13,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:13,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:13,708 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:13,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-20 12:38:13,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:13,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:13,736 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:13,736 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: [] [2022-11-20 12:38:13,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-11-20 12:38:13,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:13,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:13,740 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:13,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:13,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:13,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-20 12:38:13,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:13,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:13,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:13,871 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:13,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-20 12:38:13,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:38:13,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:13,952 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:38:13,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:13,962 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:13,962 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:13,962 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:13,962 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:13,962 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:38:13,962 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:13,962 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:13,962 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:13,962 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2022-11-20 12:38:13,962 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:13,962 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:13,963 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,967 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,971 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:13,974 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:14,070 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:14,071 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:38:14,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:14,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:14,072 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:14,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-20 12:38:14,081 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 [2022-11-20 12:38:14,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:14,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:14,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:14,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:14,102 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:38:14,102 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:38:14,122 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:38:14,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:14,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:14,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:14,127 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:14,130 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 [2022-11-20 12:38:14,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-20 12:38:14,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:14,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:38:14,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:14,141 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 12:38:14,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:14,142 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-20 12:38:14,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:38:14,144 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:38:14,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-11-20 12:38:14,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:14,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:14,148 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:14,151 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 [2022-11-20 12:38:14,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-20 12:38:14,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:14,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:14,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:14,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:14,172 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:38:14,172 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:38:14,198 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:38:14,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:14,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:14,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:14,212 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:14,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-20 12:38:14,214 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 [2022-11-20 12:38:14,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:14,225 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:38:14,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:14,225 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 12:38:14,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:14,227 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-20 12:38:14,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:38:14,236 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:38:14,240 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-20 12:38:14,240 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 12:38:14,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:14,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:14,245 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:14,252 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:38:14,252 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:38:14,252 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:38:14,252 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 [] [2022-11-20 12:38:14,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-20 12:38:14,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:14,257 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:38:14,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:14,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:14,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:14,324 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:38:14,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:14,349 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 12:38:14,349 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 4.666666666666667) internal successors, (14), 3 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) [2022-11-20 12:38:14,376 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 4.666666666666667) internal successors, (14), 3 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) Result 280 states and 401 transitions. Complement of second has 5 states. [2022-11-20 12:38:14,376 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 [2022-11-20 12:38:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-11-20 12:38:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2022-11-20 12:38:14,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2022-11-20 12:38:14,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:14,378 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:38:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:14,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:14,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:14,449 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:38:14,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:14,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:14,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-11-20 12:38:14,475 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 12:38:14,476 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 4.666666666666667) internal successors, (14), 3 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) [2022-11-20 12:38:14,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:14,496 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 4.666666666666667) internal successors, (14), 3 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) Result 280 states and 401 transitions. Complement of second has 5 states. [2022-11-20 12:38:14,496 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 [2022-11-20 12:38:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-11-20 12:38:14,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2022-11-20 12:38:14,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2022-11-20 12:38:14,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:14,500 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:38:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:14,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:14,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:14,543 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:38:14,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:14,565 INFO L141 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 [2022-11-20 12:38:14,566 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 4.666666666666667) internal successors, (14), 3 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) [2022-11-20 12:38:14,603 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 4.666666666666667) internal successors, (14), 3 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) Result 334 states and 496 transitions. Complement of second has 4 states. [2022-11-20 12:38:14,603 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 [2022-11-20 12:38:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-11-20 12:38:14,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2022-11-20 12:38:14,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 14 letters. Loop has 4 letters. [2022-11-20 12:38:14,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:14,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 18 letters. Loop has 4 letters. [2022-11-20 12:38:14,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:14,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 14 letters. Loop has 8 letters. [2022-11-20 12:38:14,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:14,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 334 states and 496 transitions. [2022-11-20 12:38:14,615 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2022-11-20 12:38:14,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 334 states to 268 states and 378 transitions. [2022-11-20 12:38:14,619 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 111 [2022-11-20 12:38:14,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2022-11-20 12:38:14,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 268 states and 378 transitions. [2022-11-20 12:38:14,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:14,620 INFO L218 hiAutomatonCegarLoop]: Abstraction has 268 states and 378 transitions. [2022-11-20 12:38:14,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states and 378 transitions. [2022-11-20 12:38:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 167. [2022-11-20 12:38:14,645 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) [2022-11-20 12:38:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 234 transitions. [2022-11-20 12:38:14,646 INFO L240 hiAutomatonCegarLoop]: Abstraction has 167 states and 234 transitions. [2022-11-20 12:38:14,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:14,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:38:14,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:38:14,647 INFO L87 Difference]: Start difference. First operand 167 states and 234 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2022-11-20 12:38:14,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:14,669 INFO L93 Difference]: Finished difference Result 179 states and 246 transitions. [2022-11-20 12:38:14,669 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 179 states and 246 transitions. [2022-11-20 12:38:14,670 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 92 [2022-11-20 12:38:14,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 179 states to 177 states and 243 transitions. [2022-11-20 12:38:14,672 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 93 [2022-11-20 12:38:14,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 93 [2022-11-20 12:38:14,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 243 transitions. [2022-11-20 12:38:14,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:14,673 INFO L218 hiAutomatonCegarLoop]: Abstraction has 177 states and 243 transitions. [2022-11-20 12:38:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 243 transitions. [2022-11-20 12:38:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 170. [2022-11-20 12:38:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 170 states have (on average 1.3764705882352941) internal successors, (234), 169 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) [2022-11-20 12:38:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 234 transitions. [2022-11-20 12:38:14,680 INFO L240 hiAutomatonCegarLoop]: Abstraction has 170 states and 234 transitions. [2022-11-20 12:38:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:38:14,681 INFO L428 stractBuchiCegarLoop]: Abstraction has 170 states and 234 transitions. [2022-11-20 12:38:14,681 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-20 12:38:14,681 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 170 states and 234 transitions. [2022-11-20 12:38:14,682 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 90 [2022-11-20 12:38:14,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:14,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:14,683 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 12:38:14,684 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1] [2022-11-20 12:38:14,684 INFO L748 eck$LassoCheckResult]: Stem: 3429#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3430#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3434#L18-1 assume !!(main_~i~0#1 > 0); 3555#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 3533#L12-2 assume !(10 == main_~i~0#1); 3437#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3438#L18-1 assume !!(main_~i~0#1 > 0); 3560#L12 assume !(1 == main_~i~0#1); 3558#L12-2 assume !(10 == main_~i~0#1); 3556#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3442#L18-1 [2022-11-20 12:38:14,684 INFO L750 eck$LassoCheckResult]: Loop: 3442#L18-1 assume !!(main_~i~0#1 > 0); 3536#L12 assume !(1 == main_~i~0#1); 3475#L12-2 assume !(10 == main_~i~0#1); 3525#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3523#L18-1 assume !!(main_~i~0#1 > 0); 3520#L12 assume !(1 == main_~i~0#1); 3516#L12-2 assume !(10 == main_~i~0#1); 3440#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3442#L18-1 [2022-11-20 12:38:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:14,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1068497813, now seen corresponding path program 1 times [2022-11-20 12:38:14,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:14,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991161959] [2022-11-20 12:38:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:14,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:38:14,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:14,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991161959] [2022-11-20 12:38:14,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991161959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:14,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:14,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:38:14,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916212512] [2022-11-20 12:38:14,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:14,705 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:38:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2142023595, now seen corresponding path program 1 times [2022-11-20 12:38:14,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:14,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084319790] [2022-11-20 12:38:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:14,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:14,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:38:14,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:14,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084319790] [2022-11-20 12:38:14,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084319790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:38:14,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:38:14,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:38:14,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799528537] [2022-11-20 12:38:14,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:38:14,723 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 12:38:14,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:14,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:38:14,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:38:14,724 INFO L87 Difference]: Start difference. First operand 170 states and 234 transitions. cyclomatic complexity: 73 Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-20 12:38:14,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:14,731 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2022-11-20 12:38:14,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 118 transitions. [2022-11-20 12:38:14,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2022-11-20 12:38:14,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 84 states and 95 transitions. [2022-11-20 12:38:14,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-20 12:38:14,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2022-11-20 12:38:14,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 95 transitions. [2022-11-20 12:38:14,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:14,734 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84 states and 95 transitions. [2022-11-20 12:38:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 95 transitions. [2022-11-20 12:38:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2022-11-20 12:38:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 81 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) [2022-11-20 12:38:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2022-11-20 12:38:14,736 INFO L240 hiAutomatonCegarLoop]: Abstraction has 82 states and 93 transitions. [2022-11-20 12:38:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:38:14,737 INFO L428 stractBuchiCegarLoop]: Abstraction has 82 states and 93 transitions. [2022-11-20 12:38:14,737 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-20 12:38:14,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 93 transitions. [2022-11-20 12:38:14,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2022-11-20 12:38:14,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:14,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:14,739 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 1, 1, 1, 1] [2022-11-20 12:38:14,739 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 2, 1, 1] [2022-11-20 12:38:14,740 INFO L748 eck$LassoCheckResult]: Stem: 3707#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3708#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3714#L18-1 assume !!(main_~i~0#1 > 0); 3739#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 3735#L12-2 assume !(10 == main_~i~0#1); 3734#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3733#L18-1 assume !!(main_~i~0#1 > 0); 3732#L12 assume !(1 == main_~i~0#1); 3731#L12-2 assume !(10 == main_~i~0#1); 3730#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3729#L18-1 assume !!(main_~i~0#1 > 0); 3728#L12 assume !(1 == main_~i~0#1); 3727#L12-2 assume !(10 == main_~i~0#1); 3726#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3725#L18-1 assume !!(main_~i~0#1 > 0); 3722#L12 assume !(1 == main_~i~0#1); 3724#L12-2 assume !(10 == main_~i~0#1); 3723#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3721#L18-1 assume !!(main_~i~0#1 > 0); 3720#L12 assume !(1 == main_~i~0#1); 3719#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3713#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3711#L18-1 assume !!(main_~i~0#1 > 0); 3712#L12 assume !(1 == main_~i~0#1); 3704#L12-2 assume !(10 == main_~i~0#1); 3706#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3783#L18-1 assume !!(main_~i~0#1 > 0); 3715#L12 [2022-11-20 12:38:14,740 INFO L750 eck$LassoCheckResult]: Loop: 3715#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 3702#L12-2 assume !(10 == main_~i~0#1); 3703#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3709#L18-1 assume !!(main_~i~0#1 > 0); 3710#L12 assume !(1 == main_~i~0#1); 3782#L12-2 assume !(10 == main_~i~0#1); 3781#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3780#L18-1 assume !!(main_~i~0#1 > 0); 3779#L12 assume !(1 == main_~i~0#1); 3778#L12-2 assume !(10 == main_~i~0#1); 3777#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3776#L18-1 assume !!(main_~i~0#1 > 0); 3775#L12 assume !(1 == main_~i~0#1); 3774#L12-2 assume !(10 == main_~i~0#1); 3749#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3745#L18-1 assume !!(main_~i~0#1 > 0); 3737#L12 assume !(1 == main_~i~0#1); 3738#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3716#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3717#L18-1 assume !!(main_~i~0#1 > 0); 3712#L12 assume !(1 == main_~i~0#1); 3704#L12-2 assume !(10 == main_~i~0#1); 3706#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3783#L18-1 assume !!(main_~i~0#1 > 0); 3715#L12 [2022-11-20 12:38:14,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash -608617554, now seen corresponding path program 2 times [2022-11-20 12:38:14,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:14,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541802730] [2022-11-20 12:38:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:14,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:38:14,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:14,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541802730] [2022-11-20 12:38:14,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541802730] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:38:14,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214706703] [2022-11-20 12:38:14,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:38:14,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:38:14,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:14,827 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:38:14,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-20 12:38:14,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:38:14,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:38:14,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:38:14,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:38:14,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:38:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:38:14,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214706703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:38:14,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:38:14,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 12:38:14,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785295803] [2022-11-20 12:38:14,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:38:14,980 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:38:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1118663673, now seen corresponding path program 1 times [2022-11-20 12:38:14,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:14,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100014677] [2022-11-20 12:38:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:14,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:38:15,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:15,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100014677] [2022-11-20 12:38:15,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100014677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:38:15,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207200358] [2022-11-20 12:38:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:15,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:38:15,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:15,105 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:38:15,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-20 12:38:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:15,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:38:15,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:38:15,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:38:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:38:15,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207200358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:38:15,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:38:15,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-20 12:38:15,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061873500] [2022-11-20 12:38:15,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:38:15,269 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 12:38:15,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:15,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:38:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:38:15,270 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. cyclomatic complexity: 17 Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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) [2022-11-20 12:38:15,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:15,335 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2022-11-20 12:38:15,336 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 169 states and 180 transitions. [2022-11-20 12:38:15,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2022-11-20 12:38:15,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 169 states to 149 states and 160 transitions. [2022-11-20 12:38:15,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2022-11-20 12:38:15,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2022-11-20 12:38:15,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 149 states and 160 transitions. [2022-11-20 12:38:15,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:15,339 INFO L218 hiAutomatonCegarLoop]: Abstraction has 149 states and 160 transitions. [2022-11-20 12:38:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states and 160 transitions. [2022-11-20 12:38:15,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 142. [2022-11-20 12:38:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 142 states have (on average 1.0774647887323943) internal successors, (153), 141 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) [2022-11-20 12:38:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2022-11-20 12:38:15,342 INFO L240 hiAutomatonCegarLoop]: Abstraction has 142 states and 153 transitions. [2022-11-20 12:38:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:38:15,343 INFO L428 stractBuchiCegarLoop]: Abstraction has 142 states and 153 transitions. [2022-11-20 12:38:15,344 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-11-20 12:38:15,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 142 states and 153 transitions. [2022-11-20 12:38:15,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 46 [2022-11-20 12:38:15,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:15,345 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:15,350 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 10, 9, 2, 1, 1, 1, 1] [2022-11-20 12:38:15,350 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2022-11-20 12:38:15,351 INFO L748 eck$LassoCheckResult]: Stem: 4274#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4275#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; 4282#L18-1 assume !!(main_~i~0#1 > 0); 4384#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 4270#L12-2 assume !(10 == main_~i~0#1); 4271#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4370#L18-1 assume !!(main_~i~0#1 > 0); 4369#L12 assume !(1 == main_~i~0#1); 4368#L12-2 assume !(10 == main_~i~0#1); 4367#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4366#L18-1 assume !!(main_~i~0#1 > 0); 4365#L12 assume !(1 == main_~i~0#1); 4364#L12-2 assume !(10 == main_~i~0#1); 4363#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4362#L18-1 assume !!(main_~i~0#1 > 0); 4361#L12 assume !(1 == main_~i~0#1); 4360#L12-2 assume !(10 == main_~i~0#1); 4359#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4358#L18-1 assume !!(main_~i~0#1 > 0); 4357#L12 assume !(1 == main_~i~0#1); 4356#L12-2 assume !(10 == main_~i~0#1); 4355#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4354#L18-1 assume !!(main_~i~0#1 > 0); 4353#L12 assume !(1 == main_~i~0#1); 4352#L12-2 assume !(10 == main_~i~0#1); 4351#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4350#L18-1 assume !!(main_~i~0#1 > 0); 4349#L12 assume !(1 == main_~i~0#1); 4348#L12-2 assume !(10 == main_~i~0#1); 4347#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4346#L18-1 assume !!(main_~i~0#1 > 0); 4345#L12 assume !(1 == main_~i~0#1); 4344#L12-2 assume !(10 == main_~i~0#1); 4343#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4342#L18-1 assume !!(main_~i~0#1 > 0); 4292#L12 assume !(1 == main_~i~0#1); 4296#L12-2 assume !(10 == main_~i~0#1); 4293#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4291#L18-1 assume !!(main_~i~0#1 > 0); 4290#L12 assume !(1 == main_~i~0#1); 4289#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4280#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4281#L18-1 assume !!(main_~i~0#1 > 0); 4338#L12 assume !(1 == main_~i~0#1); 4340#L12-2 assume !(10 == main_~i~0#1); 4339#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4337#L18-1 assume !!(main_~i~0#1 > 0); 4336#L12 [2022-11-20 12:38:15,352 INFO L750 eck$LassoCheckResult]: Loop: 4336#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 4335#L12-2 assume !(10 == main_~i~0#1); 4334#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4333#L18-1 assume !!(main_~i~0#1 > 0); 4332#L12 assume !(1 == main_~i~0#1); 4331#L12-2 assume !(10 == main_~i~0#1); 4330#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4329#L18-1 assume !!(main_~i~0#1 > 0); 4328#L12 assume !(1 == main_~i~0#1); 4327#L12-2 assume !(10 == main_~i~0#1); 4326#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4325#L18-1 assume !!(main_~i~0#1 > 0); 4324#L12 assume !(1 == main_~i~0#1); 4323#L12-2 assume !(10 == main_~i~0#1); 4322#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4321#L18-1 assume !!(main_~i~0#1 > 0); 4320#L12 assume !(1 == main_~i~0#1); 4319#L12-2 assume !(10 == main_~i~0#1); 4318#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4317#L18-1 assume !!(main_~i~0#1 > 0); 4316#L12 assume !(1 == main_~i~0#1); 4315#L12-2 assume !(10 == main_~i~0#1); 4314#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4313#L18-1 assume !!(main_~i~0#1 > 0); 4312#L12 assume !(1 == main_~i~0#1); 4311#L12-2 assume !(10 == main_~i~0#1); 4310#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4309#L18-1 assume !!(main_~i~0#1 > 0); 4308#L12 assume !(1 == main_~i~0#1); 4307#L12-2 assume !(10 == main_~i~0#1); 4306#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4305#L18-1 assume !!(main_~i~0#1 > 0); 4304#L12 assume !(1 == main_~i~0#1); 4303#L12-2 assume !(10 == main_~i~0#1); 4301#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4297#L18-1 assume !!(main_~i~0#1 > 0); 4294#L12 assume !(1 == main_~i~0#1); 4295#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4286#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4287#L18-1 assume !!(main_~i~0#1 > 0); 4338#L12 assume !(1 == main_~i~0#1); 4340#L12-2 assume !(10 == main_~i~0#1); 4339#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4337#L18-1 assume !!(main_~i~0#1 > 0); 4336#L12 [2022-11-20 12:38:15,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:15,353 INFO L85 PathProgramCache]: Analyzing trace with hash -733322943, now seen corresponding path program 3 times [2022-11-20 12:38:15,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:15,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564598855] [2022-11-20 12:38:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:15,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:15,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:15,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:15,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 491326234, now seen corresponding path program 2 times [2022-11-20 12:38:15,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:15,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462456537] [2022-11-20 12:38:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:15,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:15,407 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:15,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1133081510, now seen corresponding path program 4 times [2022-11-20 12:38:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:15,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928073521] [2022-11-20 12:38:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 562 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-11-20 12:38:15,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:15,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928073521] [2022-11-20 12:38:15,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928073521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:38:15,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824960870] [2022-11-20 12:38:15,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:38:15,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:38:15,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:15,570 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:38:15,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-20 12:38:15,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:38:15,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:38:15,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:38:15,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 562 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-11-20 12:38:15,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:38:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 562 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-11-20 12:38:15,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824960870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:38:15,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:38:15,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-20 12:38:15,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057705922] [2022-11-20 12:38:15,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:38:15,919 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:15,920 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:15,920 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:15,920 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:15,920 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:38:15,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:15,920 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:15,920 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:15,920 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration11_Loop [2022-11-20 12:38:15,920 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:15,920 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:15,921 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:15,927 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:15,930 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:15,934 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:15,979 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:15,979 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:38:15,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:15,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:15,981 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:15,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:15,988 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:16,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-20 12:38:16,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:16,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:16,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:16,024 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:16,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:38:16,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:16,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-20 12:38:16,050 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:38:16,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2022-11-20 12:38:16,054 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:16,054 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:16,054 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:16,054 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:16,055 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:38:16,055 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:16,055 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:16,055 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:16,055 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration11_Loop [2022-11-20 12:38:16,055 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:16,055 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:16,056 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:16,059 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:16,065 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:16,068 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:16,119 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:16,119 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:38:16,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:16,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:16,120 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:16,128 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 [2022-11-20 12:38:16,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-20 12:38:16,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:16,142 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:16,142 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:16,142 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:16,144 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:38:16,144 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:38:16,170 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:38:16,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:16,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:16,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:16,177 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:16,183 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 [2022-11-20 12:38:16,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-20 12:38:16,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:16,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:38:16,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:16,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:16,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:16,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:38:16,199 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:38:16,203 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:38:16,223 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:38:16,224 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 12:38:16,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:16,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:16,230 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:16,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-20 12:38:16,231 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:38:16,231 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:38:16,231 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:38:16,232 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 [] [2022-11-20 12:38:16,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:16,235 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:38:16,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:16,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:16,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:16,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:38:16,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:38:16,527 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-20 12:38:16,528 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 142 states and 153 transitions. cyclomatic complexity: 17 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) [2022-11-20 12:38:16,569 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 142 states and 153 transitions. cyclomatic complexity: 17. 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. [2022-11-20 12:38:16,570 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 [2022-11-20 12:38:16,571 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) [2022-11-20 12:38:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2022-11-20 12:38:16,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 47 letters. Loop has 44 letters. [2022-11-20 12:38:16,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:16,572 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:38:16,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:16,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:16,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:16,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:38:16,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:38:16,832 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-20 12:38:16,833 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 142 states and 153 transitions. cyclomatic complexity: 17 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) [2022-11-20 12:38:16,912 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 142 states and 153 transitions. cyclomatic complexity: 17. 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. [2022-11-20 12:38:16,913 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 [2022-11-20 12:38:16,914 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) [2022-11-20 12:38:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2022-11-20 12:38:16,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 47 letters. Loop has 44 letters. [2022-11-20 12:38:16,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:16,915 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:38:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:16,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:16,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:17,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:38:17,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:38:17,131 INFO L141 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 [2022-11-20 12:38:17,132 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 142 states and 153 transitions. cyclomatic complexity: 17 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) [2022-11-20 12:38:17,171 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 142 states and 153 transitions. cyclomatic complexity: 17. 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 268 states and 284 transitions. Complement of second has 9 states. [2022-11-20 12:38:17,172 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 [2022-11-20 12:38:17,172 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) [2022-11-20 12:38:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-11-20 12:38:17,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 47 letters. Loop has 44 letters. [2022-11-20 12:38:17,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:17,177 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:38:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:17,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:17,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:17,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:38:17,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:38:17,414 INFO L141 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 [2022-11-20 12:38:17,414 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 142 states and 153 transitions. cyclomatic complexity: 17 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) [2022-11-20 12:38:17,485 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 142 states and 153 transitions. cyclomatic complexity: 17. 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 380 states and 401 transitions. Complement of second has 19 states. [2022-11-20 12:38:17,485 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 [2022-11-20 12:38:17,486 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) [2022-11-20 12:38:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2022-11-20 12:38:17,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 47 letters. Loop has 44 letters. [2022-11-20 12:38:17,488 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:17,488 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:38:17,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:17,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:17,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:17,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:17,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:38:17,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:38:17,741 INFO L141 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 [2022-11-20 12:38:17,742 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 142 states and 153 transitions. cyclomatic complexity: 17 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) [2022-11-20 12:38:18,019 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 142 states and 153 transitions. cyclomatic complexity: 17 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 1899 states and 2480 transitions. Complement of second has 166 states 20 powerset states146 rank states. The highest rank that occured is 5 [2022-11-20 12:38:18,019 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 [2022-11-20 12:38:18,020 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) [2022-11-20 12:38:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 70 transitions. [2022-11-20 12:38:18,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 70 transitions. Stem has 47 letters. Loop has 44 letters. [2022-11-20 12:38:18,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:18,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 70 transitions. Stem has 91 letters. Loop has 44 letters. [2022-11-20 12:38:18,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:18,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 70 transitions. Stem has 47 letters. Loop has 88 letters. [2022-11-20 12:38:18,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:18,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1899 states and 2480 transitions. [2022-11-20 12:38:18,057 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 96 [2022-11-20 12:38:18,063 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1899 states to 956 states and 1245 transitions. [2022-11-20 12:38:18,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 100 [2022-11-20 12:38:18,065 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2022-11-20 12:38:18,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 956 states and 1245 transitions. [2022-11-20 12:38:18,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:18,065 INFO L218 hiAutomatonCegarLoop]: Abstraction has 956 states and 1245 transitions. [2022-11-20 12:38:18,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states and 1245 transitions. [2022-11-20 12:38:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 564. [2022-11-20 12:38:18,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 564 states have (on average 1.3953900709219857) internal successors, (787), 563 states have internal predecessors, (787), 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) [2022-11-20 12:38:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 787 transitions. [2022-11-20 12:38:18,081 INFO L240 hiAutomatonCegarLoop]: Abstraction has 564 states and 787 transitions. [2022-11-20 12:38:18,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:18,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:38:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:38:18,082 INFO L87 Difference]: Start difference. First operand 564 states and 787 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) [2022-11-20 12:38:18,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:18,130 INFO L93 Difference]: Finished difference Result 692 states and 978 transitions. [2022-11-20 12:38:18,130 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 692 states and 978 transitions. [2022-11-20 12:38:18,136 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 98 [2022-11-20 12:38:18,140 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 692 states to 675 states and 954 transitions. [2022-11-20 12:38:18,140 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2022-11-20 12:38:18,141 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2022-11-20 12:38:18,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 675 states and 954 transitions. [2022-11-20 12:38:18,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:18,141 INFO L218 hiAutomatonCegarLoop]: Abstraction has 675 states and 954 transitions. [2022-11-20 12:38:18,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states and 954 transitions. [2022-11-20 12:38:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 634. [2022-11-20 12:38:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 634 states have (on average 1.411671924290221) internal successors, (895), 633 states have internal predecessors, (895), 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) [2022-11-20 12:38:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 895 transitions. [2022-11-20 12:38:18,155 INFO L240 hiAutomatonCegarLoop]: Abstraction has 634 states and 895 transitions. [2022-11-20 12:38:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:38:18,156 INFO L428 stractBuchiCegarLoop]: Abstraction has 634 states and 895 transitions. [2022-11-20 12:38:18,156 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2022-11-20 12:38:18,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 634 states and 895 transitions. [2022-11-20 12:38:18,160 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 90 [2022-11-20 12:38:18,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:18,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:18,165 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [16, 14, 14, 9, 6, 1, 1, 1, 1] [2022-11-20 12:38:18,165 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [15, 14, 14, 9, 6, 1, 1] [2022-11-20 12:38:18,167 INFO L748 eck$LassoCheckResult]: Stem: 10860#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 10861#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; 10865#L18-1 assume !!(main_~i~0#1 > 0); 11067#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 11202#L12-2 assume !(10 == main_~i~0#1); 11203#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11353#L18-1 assume !!(main_~i~0#1 > 0); 11352#L12 assume !(1 == main_~i~0#1); 11351#L12-2 assume !(10 == main_~i~0#1); 11350#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11349#L18-1 assume !!(main_~i~0#1 > 0); 11348#L12 assume !(1 == main_~i~0#1); 11347#L12-2 assume !(10 == main_~i~0#1); 11346#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11345#L18-1 assume !!(main_~i~0#1 > 0); 11344#L12 assume !(1 == main_~i~0#1); 11343#L12-2 assume !(10 == main_~i~0#1); 11342#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11341#L18-1 assume !!(main_~i~0#1 > 0); 11340#L12 assume !(1 == main_~i~0#1); 11339#L12-2 assume !(10 == main_~i~0#1); 11338#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11337#L18-1 assume !!(main_~i~0#1 > 0); 11336#L12 assume !(1 == main_~i~0#1); 11335#L12-2 assume !(10 == main_~i~0#1); 11334#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11333#L18-1 assume !!(main_~i~0#1 > 0); 11332#L12 assume !(1 == main_~i~0#1); 11331#L12-2 assume !(10 == main_~i~0#1); 11330#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11329#L18-1 assume !!(main_~i~0#1 > 0); 11328#L12 assume !(1 == main_~i~0#1); 11327#L12-2 assume !(10 == main_~i~0#1); 11326#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11325#L18-1 assume !!(main_~i~0#1 > 0); 11319#L12 assume !(1 == main_~i~0#1); 11324#L12-2 assume !(10 == main_~i~0#1); 11322#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11318#L18-1 assume !!(main_~i~0#1 > 0); 11320#L12 assume !(1 == main_~i~0#1); 11419#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11294#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11418#L18-1 assume !!(main_~i~0#1 > 0); 11417#L12 assume !(1 == main_~i~0#1); 11416#L12-2 assume !(10 == main_~i~0#1); 11415#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11414#L18-1 assume !!(main_~i~0#1 > 0); 11413#L12 assume !(1 == main_~i~0#1); 11412#L12-2 assume !(10 == main_~i~0#1); 11411#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11410#L18-1 assume !!(main_~i~0#1 > 0); 11409#L12 assume !(1 == main_~i~0#1); 11369#L12-2 assume !(10 == main_~i~0#1); 11368#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11366#L18-1 assume !!(main_~i~0#1 > 0); 11363#L12 assume !(1 == main_~i~0#1); 11364#L12-2 assume !(10 == main_~i~0#1); 11371#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11372#L18-1 assume !!(main_~i~0#1 > 0); 11422#L12 assume !(1 == main_~i~0#1); 11355#L12-2 assume !(10 == main_~i~0#1); 11316#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11317#L18-1 assume !!(main_~i~0#1 > 0); 11193#L12 [2022-11-20 12:38:18,168 INFO L750 eck$LassoCheckResult]: Loop: 11193#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 11296#L12-2 assume !(10 == main_~i~0#1); 11321#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 10871#L18-1 assume !!(main_~i~0#1 > 0); 10866#L12 assume !(1 == main_~i~0#1); 10867#L12-2 assume !(10 == main_~i~0#1); 11483#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11481#L18-1 assume !!(main_~i~0#1 > 0); 11479#L12 assume !(1 == main_~i~0#1); 11477#L12-2 assume !(10 == main_~i~0#1); 11475#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11473#L18-1 assume !!(main_~i~0#1 > 0); 11471#L12 assume !(1 == main_~i~0#1); 11469#L12-2 assume !(10 == main_~i~0#1); 11467#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11465#L18-1 assume !!(main_~i~0#1 > 0); 11463#L12 assume !(1 == main_~i~0#1); 11461#L12-2 assume !(10 == main_~i~0#1); 11459#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11457#L18-1 assume !!(main_~i~0#1 > 0); 11455#L12 assume !(1 == main_~i~0#1); 11453#L12-2 assume !(10 == main_~i~0#1); 11451#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11449#L18-1 assume !!(main_~i~0#1 > 0); 11447#L12 assume !(1 == main_~i~0#1); 11445#L12-2 assume !(10 == main_~i~0#1); 11443#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11441#L18-1 assume !!(main_~i~0#1 > 0); 11439#L12 assume !(1 == main_~i~0#1); 11437#L12-2 assume !(10 == main_~i~0#1); 11435#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11433#L18-1 assume !!(main_~i~0#1 > 0); 11432#L12 assume !(1 == main_~i~0#1); 11431#L12-2 assume !(10 == main_~i~0#1); 11427#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11428#L18-1 assume !!(main_~i~0#1 > 0); 11420#L12 assume !(1 == main_~i~0#1); 11421#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11294#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11418#L18-1 assume !!(main_~i~0#1 > 0); 11417#L12 assume !(1 == main_~i~0#1); 11416#L12-2 assume !(10 == main_~i~0#1); 11415#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11414#L18-1 assume !!(main_~i~0#1 > 0); 11413#L12 assume !(1 == main_~i~0#1); 11412#L12-2 assume !(10 == main_~i~0#1); 11411#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11410#L18-1 assume !!(main_~i~0#1 > 0); 11409#L12 assume !(1 == main_~i~0#1); 11369#L12-2 assume !(10 == main_~i~0#1); 11368#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11366#L18-1 assume !!(main_~i~0#1 > 0); 11363#L12 assume !(1 == main_~i~0#1); 11364#L12-2 assume !(10 == main_~i~0#1); 11371#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11372#L18-1 assume !!(main_~i~0#1 > 0); 11358#L12 assume !(1 == main_~i~0#1); 11354#L12-2 assume !(10 == main_~i~0#1); 11316#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11317#L18-1 assume !!(main_~i~0#1 > 0); 11193#L12 [2022-11-20 12:38:18,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash 912728085, now seen corresponding path program 5 times [2022-11-20 12:38:18,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:18,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416635011] [2022-11-20 12:38:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:18,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:18,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:18,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:18,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1190197230, now seen corresponding path program 3 times [2022-11-20 12:38:18,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:18,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350807452] [2022-11-20 12:38:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:18,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:18,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:18,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:18,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1444454914, now seen corresponding path program 6 times [2022-11-20 12:38:18,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:18,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905444940] [2022-11-20 12:38:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:18,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 1138 proven. 55 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2022-11-20 12:38:18,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:38:18,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905444940] [2022-11-20 12:38:18,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905444940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:38:18,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520721755] [2022-11-20 12:38:18,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:38:18,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:38:18,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:18,459 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:38:18,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-11-20 12:38:18,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-11-20 12:38:18,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:38:18,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:38:18,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 1138 proven. 55 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2022-11-20 12:38:18,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:38:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 1138 proven. 55 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2022-11-20 12:38:18,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520721755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:38:18,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:38:18,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-20 12:38:18,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141428568] [2022-11-20 12:38:18,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:38:18,981 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:18,982 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:18,982 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:18,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:18,982 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:38:18,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:18,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:18,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:18,983 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration12_Loop [2022-11-20 12:38:18,983 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:18,983 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:18,984 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:18,992 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:18,997 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:19,000 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:19,042 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:19,043 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:38:19,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:19,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:19,045 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:19,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-20 12:38:19,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:19,052 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:19,073 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:38:19,074 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: [] [2022-11-20 12:38:19,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:19,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:19,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:19,079 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:19,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:38:19,083 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:19,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-11-20 12:38:19,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:19,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:19,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:19,135 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:19,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:38:19,143 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:38:19,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-11-20 12:38:19,178 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:38:19,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:19,182 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:38:19,183 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:38:19,183 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:38:19,183 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:38:19,183 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:38:19,183 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:19,183 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:38:19,183 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:38:19,183 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration12_Loop [2022-11-20 12:38:19,183 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:38:19,183 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:38:19,184 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:19,189 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:19,194 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:19,197 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:38:19,239 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:38:19,240 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:38:19,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:19,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:19,241 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:19,248 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 [2022-11-20 12:38:19,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-11-20 12:38:19,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:19,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:19,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:19,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:19,265 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:38:19,265 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:38:19,269 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:38:19,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2022-11-20 12:38:19,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:19,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:19,273 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:19,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-11-20 12:38:19,276 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 [2022-11-20 12:38:19,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:38:19,286 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:38:19,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:38:19,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:38:19,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:38:19,288 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:38:19,288 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:38:19,302 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:38:19,304 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:38:19,305 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 12:38:19,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:38:19,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:38:19,310 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:38:19,314 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:38:19,314 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:38:19,314 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:38:19,314 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 [] [2022-11-20 12:38:19,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-11-20 12:38:19,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:19,319 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:38:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:19,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:19,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:19,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:38:19,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:38:19,698 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2022-11-20 12:38:19,698 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 634 states and 895 transitions. cyclomatic complexity: 279 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) [2022-11-20 12:38:19,746 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 634 states and 895 transitions. cyclomatic complexity: 279. 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 1120 states and 1472 transitions. Complement of second has 7 states. [2022-11-20 12:38:19,747 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 [2022-11-20 12:38:19,747 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) [2022-11-20 12:38:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2022-11-20 12:38:19,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 63 letters. Loop has 60 letters. [2022-11-20 12:38:19,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:19,748 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:38:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:19,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:19,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:19,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:38:19,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:38:20,156 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2022-11-20 12:38:20,156 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 634 states and 895 transitions. cyclomatic complexity: 279 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) [2022-11-20 12:38:20,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:20,262 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 634 states and 895 transitions. cyclomatic complexity: 279. 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 1179 states and 1565 transitions. Complement of second has 11 states. [2022-11-20 12:38:20,264 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 [2022-11-20 12:38:20,264 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) [2022-11-20 12:38:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2022-11-20 12:38:20,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 63 letters. Loop has 60 letters. [2022-11-20 12:38:20,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:20,265 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:38:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:20,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:20,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:20,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:38:20,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:38:20,633 INFO L141 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 [2022-11-20 12:38:20,633 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 634 states and 895 transitions. cyclomatic complexity: 279 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) [2022-11-20 12:38:20,678 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 634 states and 895 transitions. cyclomatic complexity: 279. 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 1301 states and 1787 transitions. Complement of second has 9 states. [2022-11-20 12:38:20,678 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 [2022-11-20 12:38:20,679 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) [2022-11-20 12:38:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2022-11-20 12:38:20,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 63 letters. Loop has 60 letters. [2022-11-20 12:38:20,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:20,680 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:38:20,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:20,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:20,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:20,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:38:20,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:21,072 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:38:21,072 INFO L141 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 [2022-11-20 12:38:21,073 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 634 states and 895 transitions. cyclomatic complexity: 279 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) [2022-11-20 12:38:21,176 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 634 states and 895 transitions. cyclomatic complexity: 279. 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 1866 states and 2535 transitions. Complement of second has 19 states. [2022-11-20 12:38:21,176 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 [2022-11-20 12:38:21,177 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) [2022-11-20 12:38:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2022-11-20 12:38:21,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 63 letters. Loop has 60 letters. [2022-11-20 12:38:21,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:21,178 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:38:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:21,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:38:21,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:38:21,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:38:21,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:38:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 208 proven. 59 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:38:21,586 INFO L141 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 [2022-11-20 12:38:21,586 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 634 states and 895 transitions. cyclomatic complexity: 279 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) [2022-11-20 12:38:22,301 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 634 states and 895 transitions. cyclomatic complexity: 279 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 11129 states and 19734 transitions. Complement of second has 282 states 36 powerset states246 rank states. The highest rank that occured is 5 [2022-11-20 12:38:22,302 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 [2022-11-20 12:38:22,302 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) [2022-11-20 12:38:22,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 110 transitions. [2022-11-20 12:38:22,303 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 110 transitions. Stem has 63 letters. Loop has 60 letters. [2022-11-20 12:38:22,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:22,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 110 transitions. Stem has 123 letters. Loop has 60 letters. [2022-11-20 12:38:22,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:22,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 110 transitions. Stem has 63 letters. Loop has 120 letters. [2022-11-20 12:38:22,326 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:38:22,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11129 states and 19734 transitions. [2022-11-20 12:38:22,416 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 248 [2022-11-20 12:38:22,448 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11129 states to 4882 states and 8741 transitions. [2022-11-20 12:38:22,448 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 330 [2022-11-20 12:38:22,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 575 [2022-11-20 12:38:22,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4882 states and 8741 transitions. [2022-11-20 12:38:22,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:22,451 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4882 states and 8741 transitions. [2022-11-20 12:38:22,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states and 8741 transitions. [2022-11-20 12:38:22,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 3014. [2022-11-20 12:38:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3014 states have (on average 1.813868613138686) internal successors, (5467), 3013 states have internal predecessors, (5467), 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) [2022-11-20 12:38:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 5467 transitions. [2022-11-20 12:38:22,532 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3014 states and 5467 transitions. [2022-11-20 12:38:22,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:38:22,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:38:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:38:22,535 INFO L87 Difference]: Start difference. First operand 3014 states and 5467 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) [2022-11-20 12:38:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:38:22,617 INFO L93 Difference]: Finished difference Result 3401 states and 6312 transitions. [2022-11-20 12:38:22,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3401 states and 6312 transitions. [2022-11-20 12:38:22,670 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 168 [2022-11-20 12:38:22,690 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3401 states to 3369 states and 6221 transitions. [2022-11-20 12:38:22,690 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 238 [2022-11-20 12:38:22,691 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 238 [2022-11-20 12:38:22,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3369 states and 6221 transitions. [2022-11-20 12:38:22,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:38:22,691 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3369 states and 6221 transitions. [2022-11-20 12:38:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states and 6221 transitions. [2022-11-20 12:38:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 3222. [2022-11-20 12:38:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 3222 states have (on average 1.8395406579764122) internal successors, (5927), 3221 states have internal predecessors, (5927), 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) [2022-11-20 12:38:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 5927 transitions. [2022-11-20 12:38:22,761 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3222 states and 5927 transitions. [2022-11-20 12:38:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:38:22,762 INFO L428 stractBuchiCegarLoop]: Abstraction has 3222 states and 5927 transitions. [2022-11-20 12:38:22,762 INFO L335 stractBuchiCegarLoop]: ======== Iteration 13 ============ [2022-11-20 12:38:22,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3222 states and 5927 transitions. [2022-11-20 12:38:22,780 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 152 [2022-11-20 12:38:22,780 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:38:22,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:38:22,782 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [19, 17, 17, 9, 9, 1, 1, 1, 1] [2022-11-20 12:38:22,782 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [18, 17, 17, 9, 9, 1, 1] [2022-11-20 12:38:22,782 INFO L748 eck$LassoCheckResult]: Stem: 37487#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 37488#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; 37494#L18-1 assume !!(main_~i~0#1 > 0); 37793#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 37925#L12-2 assume !(10 == main_~i~0#1); 37926#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 40455#L18-1 assume !!(main_~i~0#1 > 0); 40454#L12 assume !(1 == main_~i~0#1); 38341#L12-2 assume !(10 == main_~i~0#1); 40567#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 38335#L18-1 assume !!(main_~i~0#1 > 0); 40564#L12 assume !(1 == main_~i~0#1); 38331#L12-2 assume !(10 == main_~i~0#1); 40561#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 38326#L18-1 assume !!(main_~i~0#1 > 0); 40558#L12 assume !(1 == main_~i~0#1); 38320#L12-2 assume !(10 == main_~i~0#1); 40555#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 38316#L18-1 assume !!(main_~i~0#1 > 0); 40552#L12 assume !(1 == main_~i~0#1); 38311#L12-2 assume !(10 == main_~i~0#1); 40549#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 38305#L18-1 assume !!(main_~i~0#1 > 0); 40546#L12 assume !(1 == main_~i~0#1); 38300#L12-2 assume !(10 == main_~i~0#1); 40543#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 38296#L18-1 assume !!(main_~i~0#1 > 0); 40540#L12 assume !(1 == main_~i~0#1); 38291#L12-2 assume !(10 == main_~i~0#1); 40537#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 38285#L18-1 assume !!(main_~i~0#1 > 0); 40534#L12 assume !(1 == main_~i~0#1); 38280#L12-2 assume !(10 == main_~i~0#1); 40531#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 38276#L18-1 assume !!(main_~i~0#1 > 0); 40525#L12 assume !(1 == main_~i~0#1); 38273#L12-2 assume !(10 == main_~i~0#1); 40527#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 38233#L18-1 assume !!(main_~i~0#1 > 0); 40523#L12 assume !(1 == main_~i~0#1); 40400#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 37922#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40387#L18-1 assume !!(main_~i~0#1 > 0); 40384#L12 assume !(1 == main_~i~0#1); 40380#L12-2 assume !(10 == main_~i~0#1); 40377#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40374#L18-1 assume !!(main_~i~0#1 > 0); 40371#L12 assume !(1 == main_~i~0#1); 40366#L12-2 assume !(10 == main_~i~0#1); 40360#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 39288#L18-1 assume !!(main_~i~0#1 > 0); 40353#L12 assume !(1 == main_~i~0#1); 40354#L12-2 assume !(10 == main_~i~0#1); 40359#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40356#L18-1 assume !!(main_~i~0#1 > 0); 40347#L12 assume !(1 == main_~i~0#1); 40352#L12-2 assume !(10 == main_~i~0#1); 40337#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 39271#L18-1 assume !!(main_~i~0#1 > 0); 40328#L12 assume !(1 == main_~i~0#1); 40329#L12-2 assume !(10 == main_~i~0#1); 40322#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 39262#L18-1 assume !!(main_~i~0#1 > 0); 40405#L12 assume !(1 == main_~i~0#1); 40402#L12-2 assume !(10 == main_~i~0#1); 40311#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40300#L18-1 assume !!(main_~i~0#1 > 0); 40297#L12 assume !(1 == main_~i~0#1); 40298#L12-2 assume !(10 == main_~i~0#1); 40399#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40493#L18-1 assume !!(main_~i~0#1 > 0); 39232#L12 assume !(1 == main_~i~0#1); 40305#L12-2 assume !(10 == main_~i~0#1); 40295#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40296#L18-1 assume !!(main_~i~0#1 > 0); 38219#L12 [2022-11-20 12:38:22,783 INFO L750 eck$LassoCheckResult]: Loop: 38219#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 37482#L12-2 assume !(10 == main_~i~0#1); 37483#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 37496#L18-1 assume !!(main_~i~0#1 > 0); 37495#L12 assume !(1 == main_~i~0#1); 37485#L12-2 assume !(10 == main_~i~0#1); 37486#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 40698#L18-1 assume !!(main_~i~0#1 > 0); 40696#L12 assume !(1 == main_~i~0#1); 40694#L12-2 assume !(10 == main_~i~0#1); 40692#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 40690#L18-1 assume !!(main_~i~0#1 > 0); 40688#L12 assume !(1 == main_~i~0#1); 40686#L12-2 assume !(10 == main_~i~0#1); 40684#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 40682#L18-1 assume !!(main_~i~0#1 > 0); 40680#L12 assume !(1 == main_~i~0#1); 40678#L12-2 assume !(10 == main_~i~0#1); 40676#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 40674#L18-1 assume !!(main_~i~0#1 > 0); 40672#L12 assume !(1 == main_~i~0#1); 40670#L12-2 assume !(10 == main_~i~0#1); 40668#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 40666#L18-1 assume !!(main_~i~0#1 > 0); 40664#L12 assume !(1 == main_~i~0#1); 40662#L12-2 assume !(10 == main_~i~0#1); 40660#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 40658#L18-1 assume !!(main_~i~0#1 > 0); 40656#L12 assume !(1 == main_~i~0#1); 40654#L12-2 assume !(10 == main_~i~0#1); 40652#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 40650#L18-1 assume !!(main_~i~0#1 > 0); 40648#L12 assume !(1 == main_~i~0#1); 40647#L12-2 assume !(10 == main_~i~0#1); 40500#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 40501#L18-1 assume !!(main_~i~0#1 > 0); 40457#L12 assume !(1 == main_~i~0#1); 40458#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 39430#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40403#L18-1 assume !!(main_~i~0#1 > 0); 40389#L12 assume !(1 == main_~i~0#1); 40388#L12-2 assume !(10 == main_~i~0#1); 40386#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40382#L18-1 assume !!(main_~i~0#1 > 0); 40378#L12 assume !(1 == main_~i~0#1); 40375#L12-2 assume !(10 == main_~i~0#1); 40373#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40368#L18-1 assume !!(main_~i~0#1 > 0); 40369#L12 assume !(1 == main_~i~0#1); 40361#L12-2 assume !(10 == main_~i~0#1); 40362#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40421#L18-1 assume !!(main_~i~0#1 > 0); 40419#L12 assume !(1 == main_~i~0#1); 40342#L12-2 assume !(10 == main_~i~0#1); 40343#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40335#L18-1 assume !!(main_~i~0#1 > 0); 40336#L12 assume !(1 == main_~i~0#1); 40327#L12-2 assume !(10 == main_~i~0#1); 40323#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40320#L18-1 assume !!(main_~i~0#1 > 0); 40321#L12 assume !(1 == main_~i~0#1); 40303#L12-2 assume !(10 == main_~i~0#1); 40304#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40415#L18-1 assume !!(main_~i~0#1 > 0); 40416#L12 assume !(1 == main_~i~0#1); 40414#L12-2 assume !(10 == main_~i~0#1); 40308#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40292#L18-1 assume !!(main_~i~0#1 > 0); 40293#L12 assume !(1 == main_~i~0#1); 39451#L12-2 assume !(10 == main_~i~0#1); 39438#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 40496#L18-1 assume !!(main_~i~0#1 > 0); 38219#L12 [2022-11-20 12:38:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:22,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1568126196, now seen corresponding path program 7 times [2022-11-20 12:38:22,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:22,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812292893] [2022-11-20 12:38:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:22,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:22,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:22,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash 537366349, now seen corresponding path program 4 times [2022-11-20 12:38:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:22,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367806331] [2022-11-20 12:38:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:22,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:22,813 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:22,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:22,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:38:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 758614336, now seen corresponding path program 8 times [2022-11-20 12:38:22,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:38:22,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814631585] [2022-11-20 12:38:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:38:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:38:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:22,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:22,851 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:38:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:23,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:38:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:38:23,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 12:38:23 BoogieIcfgContainer [2022-11-20 12:38:23,734 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 12:38:23,735 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:38:23,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:38:23,735 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:38:23,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:38:07" (3/4) ... [2022-11-20 12:38:23,739 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-20 12:38:23,824 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:38:23,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:38:23,825 INFO L158 Benchmark]: Toolchain (without parser) took 16553.59ms. Allocated memory was 157.3MB in the beginning and 237.0MB in the end (delta: 79.7MB). Free memory was 119.4MB in the beginning and 72.4MB in the end (delta: 47.0MB). Peak memory consumption was 129.0MB. Max. memory is 16.1GB. [2022-11-20 12:38:23,825 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory was 77.1MB in the beginning and 77.0MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:38:23,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.18ms. Allocated memory is still 157.3MB. Free memory was 119.4MB in the beginning and 110.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 12:38:23,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.40ms. Allocated memory is still 157.3MB. Free memory was 110.2MB in the beginning and 108.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:38:23,827 INFO L158 Benchmark]: Boogie Preprocessor took 18.06ms. Allocated memory is still 157.3MB. Free memory was 108.7MB in the beginning and 107.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:38:23,827 INFO L158 Benchmark]: RCFGBuilder took 240.61ms. Allocated memory is still 157.3MB. Free memory was 107.6MB in the beginning and 99.7MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 12:38:23,827 INFO L158 Benchmark]: BuchiAutomizer took 15965.90ms. Allocated memory was 157.3MB in the beginning and 237.0MB in the end (delta: 79.7MB). Free memory was 99.2MB in the beginning and 77.6MB in the end (delta: 21.6MB). Peak memory consumption was 101.7MB. Max. memory is 16.1GB. [2022-11-20 12:38:23,828 INFO L158 Benchmark]: Witness Printer took 89.55ms. Allocated memory is still 237.0MB. Free memory was 77.6MB in the beginning and 72.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 12:38:23,830 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory was 77.1MB in the beginning and 77.0MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.18ms. Allocated memory is still 157.3MB. Free memory was 119.4MB in the beginning and 110.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.40ms. Allocated memory is still 157.3MB. Free memory was 110.2MB in the beginning and 108.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.06ms. Allocated memory is still 157.3MB. Free memory was 108.7MB in the beginning and 107.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 240.61ms. Allocated memory is still 157.3MB. Free memory was 107.6MB in the beginning and 99.7MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 15965.90ms. Allocated memory was 157.3MB in the beginning and 237.0MB in the end (delta: 79.7MB). Free memory was 99.2MB in the beginning and 77.6MB in the end (delta: 21.6MB). Peak memory consumption was 101.7MB. Max. memory is 16.1GB. * Witness Printer took 89.55ms. Allocated memory is still 237.0MB. Free memory was 77.6MB in the beginning and 72.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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 17 terminating modules (9 trivial, 5 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 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 3222 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.8s and 13 iterations. TraceHistogramMax:19. Analysis of lassos took 8.6s. Construction of modules took 0.6s. Büchi inclusion checks took 6.0s. Highest rank in rank-based complementation 5. Minimization of det autom 2. Minimization of nondet autom 15. Automata minimization 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 2653 StatesRemovedByMinimization, 14 NontrivialMinimizations. Non-live state removal took 0.3s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 1, 0, 2]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 570/640 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 420 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 387 mSDsluCounter, 232 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 768 IncrementalHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 201 mSDtfsCounter, 768 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT2 conc0 concLT2 SILN0 SILU0 SILI2 SILT3 lasso1 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax174 hnf100 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf92 smp91 dnf137 smp95 tf107 neg95 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 124ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 12]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 VAL [up=0] [L11] COND TRUE i > 0 VAL [i=1, up=0] [L12] COND TRUE i == 1 [L13] up = 1 VAL [i=1, up=1] [L15] COND FALSE !(i == 10) VAL [i=1, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=2, up=1] [L11] COND TRUE i > 0 VAL [i=2, up=1] [L12] COND FALSE !(i == 1) VAL [i=2, up=1] [L15] COND FALSE !(i == 10) VAL [i=2, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=3, up=1] [L11] COND TRUE i > 0 VAL [i=3, up=1] [L12] COND FALSE !(i == 1) VAL [i=3, up=1] [L15] COND FALSE !(i == 10) VAL [i=3, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=4, up=1] [L11] COND TRUE i > 0 VAL [i=4, up=1] [L12] COND FALSE !(i == 1) VAL [i=4, up=1] [L15] COND FALSE !(i == 10) VAL [i=4, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=5, up=1] [L11] COND TRUE i > 0 VAL [i=5, up=1] [L12] COND FALSE !(i == 1) VAL [i=5, up=1] [L15] COND FALSE !(i == 10) VAL [i=5, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=6, up=1] [L11] COND TRUE i > 0 VAL [i=6, up=1] [L12] COND FALSE !(i == 1) VAL [i=6, up=1] [L15] COND FALSE !(i == 10) VAL [i=6, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=7, up=1] [L11] COND TRUE i > 0 VAL [i=7, up=1] [L12] COND FALSE !(i == 1) VAL [i=7, up=1] [L15] COND FALSE !(i == 10) VAL [i=7, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=8, up=1] [L11] COND TRUE i > 0 VAL [i=8, up=1] [L12] COND FALSE !(i == 1) VAL [i=8, up=1] [L15] COND FALSE !(i == 10) VAL [i=8, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=9, up=1] [L11] COND TRUE i > 0 VAL [i=9, up=1] [L12] COND FALSE !(i == 1) VAL [i=9, up=1] [L15] COND FALSE !(i == 10) VAL [i=9, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=10, up=1] [L11] COND TRUE i > 0 VAL [i=10, up=1] [L12] COND FALSE !(i == 1) VAL [i=10, up=1] [L15] COND TRUE i == 10 [L16] up = 0 VAL [i=10, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=9, up=0] [L11] COND TRUE i > 0 VAL [i=9, up=0] [L12] COND FALSE !(i == 1) VAL [i=9, up=0] [L15] COND FALSE !(i == 10) VAL [i=9, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=8, up=0] [L11] COND TRUE i > 0 VAL [i=8, up=0] [L12] COND FALSE !(i == 1) VAL [i=8, up=0] [L15] COND FALSE !(i == 10) VAL [i=8, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=7, up=0] [L11] COND TRUE i > 0 VAL [i=7, up=0] [L12] COND FALSE !(i == 1) VAL [i=7, up=0] [L15] COND FALSE !(i == 10) VAL [i=7, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=6, up=0] [L11] COND TRUE i > 0 VAL [i=6, up=0] [L12] COND FALSE !(i == 1) VAL [i=6, up=0] [L15] COND FALSE !(i == 10) VAL [i=6, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=5, up=0] [L11] COND TRUE i > 0 VAL [i=5, up=0] [L12] COND FALSE !(i == 1) VAL [i=5, up=0] [L15] COND FALSE !(i == 10) VAL [i=5, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=4, up=0] [L11] COND TRUE i > 0 VAL [i=4, up=0] [L12] COND FALSE !(i == 1) VAL [i=4, up=0] [L15] COND FALSE !(i == 10) VAL [i=4, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=3, up=0] [L11] COND TRUE i > 0 VAL [i=3, up=0] [L12] COND FALSE !(i == 1) VAL [i=3, up=0] [L15] COND FALSE !(i == 10) VAL [i=3, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=2, up=0] [L11] COND TRUE i > 0 VAL [i=2, up=0] [L12] COND FALSE !(i == 1) VAL [i=2, up=0] [L15] COND FALSE !(i == 10) VAL [i=2, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=1, up=0] [L11] COND TRUE i > 0 VAL [i=1, up=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. - 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 VAL [up=0] [L11] COND TRUE i > 0 VAL [i=1, up=0] [L12] COND TRUE i == 1 [L13] up = 1 VAL [i=1, up=1] [L15] COND FALSE !(i == 10) VAL [i=1, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=2, up=1] [L11] COND TRUE i > 0 VAL [i=2, up=1] [L12] COND FALSE !(i == 1) VAL [i=2, up=1] [L15] COND FALSE !(i == 10) VAL [i=2, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=3, up=1] [L11] COND TRUE i > 0 VAL [i=3, up=1] [L12] COND FALSE !(i == 1) VAL [i=3, up=1] [L15] COND FALSE !(i == 10) VAL [i=3, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=4, up=1] [L11] COND TRUE i > 0 VAL [i=4, up=1] [L12] COND FALSE !(i == 1) VAL [i=4, up=1] [L15] COND FALSE !(i == 10) VAL [i=4, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=5, up=1] [L11] COND TRUE i > 0 VAL [i=5, up=1] [L12] COND FALSE !(i == 1) VAL [i=5, up=1] [L15] COND FALSE !(i == 10) VAL [i=5, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=6, up=1] [L11] COND TRUE i > 0 VAL [i=6, up=1] [L12] COND FALSE !(i == 1) VAL [i=6, up=1] [L15] COND FALSE !(i == 10) VAL [i=6, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=7, up=1] [L11] COND TRUE i > 0 VAL [i=7, up=1] [L12] COND FALSE !(i == 1) VAL [i=7, up=1] [L15] COND FALSE !(i == 10) VAL [i=7, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=8, up=1] [L11] COND TRUE i > 0 VAL [i=8, up=1] [L12] COND FALSE !(i == 1) VAL [i=8, up=1] [L15] COND FALSE !(i == 10) VAL [i=8, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=9, up=1] [L11] COND TRUE i > 0 VAL [i=9, up=1] [L12] COND FALSE !(i == 1) VAL [i=9, up=1] [L15] COND FALSE !(i == 10) VAL [i=9, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=10, up=1] [L11] COND TRUE i > 0 VAL [i=10, up=1] [L12] COND FALSE !(i == 1) VAL [i=10, up=1] [L15] COND TRUE i == 10 [L16] up = 0 VAL [i=10, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=9, up=0] [L11] COND TRUE i > 0 VAL [i=9, up=0] [L12] COND FALSE !(i == 1) VAL [i=9, up=0] [L15] COND FALSE !(i == 10) VAL [i=9, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=8, up=0] [L11] COND TRUE i > 0 VAL [i=8, up=0] [L12] COND FALSE !(i == 1) VAL [i=8, up=0] [L15] COND FALSE !(i == 10) VAL [i=8, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=7, up=0] [L11] COND TRUE i > 0 VAL [i=7, up=0] [L12] COND FALSE !(i == 1) VAL [i=7, up=0] [L15] COND FALSE !(i == 10) VAL [i=7, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=6, up=0] [L11] COND TRUE i > 0 VAL [i=6, up=0] [L12] COND FALSE !(i == 1) VAL [i=6, up=0] [L15] COND FALSE !(i == 10) VAL [i=6, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=5, up=0] [L11] COND TRUE i > 0 VAL [i=5, up=0] [L12] COND FALSE !(i == 1) VAL [i=5, up=0] [L15] COND FALSE !(i == 10) VAL [i=5, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=4, up=0] [L11] COND TRUE i > 0 VAL [i=4, up=0] [L12] COND FALSE !(i == 1) VAL [i=4, up=0] [L15] COND FALSE !(i == 10) VAL [i=4, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=3, up=0] [L11] COND TRUE i > 0 VAL [i=3, up=0] [L12] COND FALSE !(i == 1) VAL [i=3, up=0] [L15] COND FALSE !(i == 10) VAL [i=3, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=2, up=0] [L11] COND TRUE i > 0 VAL [i=2, up=0] [L12] COND FALSE !(i == 1) VAL [i=2, up=0] [L15] COND FALSE !(i == 10) VAL [i=2, up=0] [L18] COND FALSE !(up == 1) [L21] i = i-1 VAL [i=1, up=0] [L11] COND TRUE i > 0 VAL [i=1, up=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! [2022-11-20 12:38:23,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:24,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-11-20 12:38:24,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-11-20 12:38:24,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-20 12:38:24,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-20 12:38:24,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7203ce44-d172-4ed5-8145-3acd59333120/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)