./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0 --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 32bit --witnessprinter.graph.data.programhash 9a8265a1502e23b0364b9cd16198377a0ca498fc346156a58eeb954c0e23f901 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:35:06,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:35:06,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:35:06,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:35:06,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:35:06,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:35:06,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:35:06,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:35:06,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:35:06,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:35:06,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:35:06,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:35:06,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:35:06,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:35:06,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:35:06,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:35:06,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:35:06,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:35:06,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:35:06,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:35:06,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:35:06,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:35:06,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:35:06,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:35:06,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:35:06,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:35:06,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:35:06,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:35:06,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:35:06,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:35:06,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:35:06,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:35:06,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:35:06,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:35:06,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:35:06,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:35:06,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:35:06,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:35:06,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:35:06,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:35:06,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:35:06,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-22 15:35:06,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:35:06,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:35:06,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:35:06,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:35:06,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:35:06,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:35:06,701 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:35:06,701 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-22 15:35:06,701 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-22 15:35:06,701 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-22 15:35:06,702 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-22 15:35:06,702 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-22 15:35:06,703 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-22 15:35:06,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:35:06,703 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:35:06,703 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:35:06,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:35:06,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:35:06,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:35:06,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-22 15:35:06,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-22 15:35:06,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-22 15:35:06,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:35:06,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:35:06,705 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-22 15:35:06,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:35:06,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-22 15:35:06,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:35:06,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:35:06,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:35:06,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:35:06,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:35:06,709 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-22 15:35:06,709 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_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a8265a1502e23b0364b9cd16198377a0ca498fc346156a58eeb954c0e23f901 [2021-11-22 15:35:06,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:35:07,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:35:07,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:35:07,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:35:07,013 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:35:07,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c [2021-11-22 15:35:07,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/data/289f75b59/fc1ff0d041a84adaa71ac29cd29d921d/FLAG2c6b765f9 [2021-11-22 15:35:07,662 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:35:07,670 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c [2021-11-22 15:35:07,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/data/289f75b59/fc1ff0d041a84adaa71ac29cd29d921d/FLAG2c6b765f9 [2021-11-22 15:35:07,983 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/data/289f75b59/fc1ff0d041a84adaa71ac29cd29d921d [2021-11-22 15:35:07,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:35:07,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:35:07,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:35:07,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:35:07,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:35:07,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:35:07" (1/1) ... [2021-11-22 15:35:07,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106d36d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:07, skipping insertion in model container [2021-11-22 15:35:07,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:35:07" (1/1) ... [2021-11-22 15:35:08,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:35:08,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:35:08,286 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c[8209,8222] [2021-11-22 15:35:08,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:35:08,295 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:35:08,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c[8209,8222] [2021-11-22 15:35:08,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:35:08,353 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:35:08,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08 WrapperNode [2021-11-22 15:35:08,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:35:08,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:35:08,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:35:08,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:35:08,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (1/1) ... [2021-11-22 15:35:08,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (1/1) ... [2021-11-22 15:35:08,400 INFO L137 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 259 [2021-11-22 15:35:08,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:35:08,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:35:08,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:35:08,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:35:08,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (1/1) ... [2021-11-22 15:35:08,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (1/1) ... [2021-11-22 15:35:08,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (1/1) ... [2021-11-22 15:35:08,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (1/1) ... [2021-11-22 15:35:08,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (1/1) ... [2021-11-22 15:35:08,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (1/1) ... [2021-11-22 15:35:08,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (1/1) ... [2021-11-22 15:35:08,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:35:08,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:35:08,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:35:08,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:35:08,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (1/1) ... [2021-11-22 15:35:08,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:08,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:08,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:08,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-22 15:35:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:35:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:35:08,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:35:08,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:35:08,621 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:35:08,623 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:35:09,040 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:35:09,048 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:35:09,048 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:35:09,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:35:09 BoogieIcfgContainer [2021-11-22 15:35:09,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:35:09,051 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-22 15:35:09,051 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-22 15:35:09,054 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-22 15:35:09,055 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:35:09,055 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 03:35:07" (1/3) ... [2021-11-22 15:35:09,057 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7accfdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:35:09, skipping insertion in model container [2021-11-22 15:35:09,057 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:35:09,057 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:08" (2/3) ... [2021-11-22 15:35:09,057 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7accfdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:35:09, skipping insertion in model container [2021-11-22 15:35:09,058 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:35:09,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:35:09" (3/3) ... [2021-11-22 15:35:09,059 INFO L388 chiAutomizerObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c [2021-11-22 15:35:09,102 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-22 15:35:09,102 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-22 15:35:09,103 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-22 15:35:09,103 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-22 15:35:09,103 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-22 15:35:09,103 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-22 15:35:09,103 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-22 15:35:09,103 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-22 15:35:09,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 76 states, 75 states have (on average 1.6933333333333334) internal successors, (127), 75 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:09,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-11-22 15:35:09,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:35:09,143 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:35:09,150 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:09,151 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:09,151 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-22 15:35:09,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 76 states, 75 states have (on average 1.6933333333333334) internal successors, (127), 75 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:09,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-11-22 15:35:09,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:35:09,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:35:09,160 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:09,160 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:09,167 INFO L791 eck$LassoCheckResult]: Stem: 54#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 43#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 17#L161true assume !(0 == ~r1~0);init_~tmp~0#1 := 0; 10#L161-1true init_#res#1 := init_~tmp~0#1; 58#L254true main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 12#L310true assume !(0 == main_~i2~0#1); 5#L310-2true ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 18#L320-2true [2021-11-22 15:35:09,168 INFO L793 eck$LassoCheckResult]: Loop: 18#L320-2true assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 7#L61true assume !(0 != ~mode1~0 % 256); 74#L75true assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite4#1 := ~send1~0; 52#L75-2true ~p1_new~0 := (if node1_#t~ite4#1 % 256 <= 127 then node1_#t~ite4#1 % 256 else node1_#t~ite4#1 % 256 - 256);havoc node1_#t~ite4#1;~mode1~0 := 1; 50#L61-2true assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 62#L87true assume !(0 != ~mode2~0 % 256); 65#L100true assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite5#1 := ~send2~0; 38#L100-2true ~p2_new~0 := (if node2_#t~ite5#1 % 256 <= 127 then node2_#t~ite5#1 % 256 else node2_#t~ite5#1 % 256 - 256);havoc node2_#t~ite5#1;~mode2~0 := 1; 9#L87-2true assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 57#L112true assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 67#L115true assume !(node3_~m3~0#1 != ~nomsg~0); 73#L115-1true ~mode3~0 := 0; 68#L112-2true assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 75#L137true assume !(0 != ~mode4~0 % 256); 34#L150true assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite7#1 := ~send4~0; 23#L150-2true ~p4_new~0 := (if node4_#t~ite7#1 % 256 <= 127 then node4_#t~ite7#1 % 256 else node4_#t~ite7#1 % 256 - 256);havoc node4_#t~ite7#1;~mode4~0 := 1; 51#L137-2true assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 69#L262true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1#1 := 0; 29#L262-1true check_#res#1 := check_~tmp~1#1; 6#L282true main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 49#L347true assume !(0 == assert_~arg#1 % 256); 40#L342true assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 18#L320-2true [2021-11-22 15:35:09,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1932780748, now seen corresponding path program 1 times [2021-11-22 15:35:09,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:09,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487326245] [2021-11-22 15:35:09,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:09,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:09,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:09,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487326245] [2021-11-22 15:35:09,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487326245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:09,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:09,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:35:09,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162392195] [2021-11-22 15:35:09,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:09,426 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:35:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1135428887, now seen corresponding path program 1 times [2021-11-22 15:35:09,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:09,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67046362] [2021-11-22 15:35:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:09,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:09,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:09,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67046362] [2021-11-22 15:35:09,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67046362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:09,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:09,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:35:09,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002909303] [2021-11-22 15:35:09,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:09,687 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-22 15:35:09,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:35:09,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:09,733 INFO L87 Difference]: Start difference. First operand has 76 states, 75 states have (on average 1.6933333333333334) internal successors, (127), 75 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) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:09,878 INFO L93 Difference]: Finished difference Result 122 states and 194 transitions. [2021-11-22 15:35:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:35:09,888 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 122 states and 194 transitions. [2021-11-22 15:35:09,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-11-22 15:35:09,911 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 122 states to 113 states and 163 transitions. [2021-11-22 15:35:09,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2021-11-22 15:35:09,915 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2021-11-22 15:35:09,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 113 states and 163 transitions. [2021-11-22 15:35:09,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:35:09,918 INFO L681 BuchiCegarLoop]: Abstraction has 113 states and 163 transitions. [2021-11-22 15:35:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states and 163 transitions. [2021-11-22 15:35:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 71. [2021-11-22 15:35:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.352112676056338) internal successors, (96), 70 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 96 transitions. [2021-11-22 15:35:09,963 INFO L704 BuchiCegarLoop]: Abstraction has 71 states and 96 transitions. [2021-11-22 15:35:09,963 INFO L587 BuchiCegarLoop]: Abstraction has 71 states and 96 transitions. [2021-11-22 15:35:09,963 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-22 15:35:09,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 96 transitions. [2021-11-22 15:35:09,968 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-11-22 15:35:09,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:35:09,968 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:35:09,970 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:09,970 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:09,971 INFO L791 eck$LassoCheckResult]: Stem: 278#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 268#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 243#L161 assume 0 == ~r1~0; 244#L162 assume ~id1~0 >= 0; 264#L163 assume 0 == ~st1~0; 247#L164 assume ~send1~0 == ~id1~0; 238#L165 assume 0 == ~mode1~0 % 256; 239#L166 assume ~id2~0 >= 0; 251#L167 assume 0 == ~st2~0; 229#L168 assume ~send2~0 == ~id2~0; 230#L169 assume 0 == ~mode2~0 % 256; 286#L170 assume ~id3~0 >= 0; 271#L171 assume 0 == ~st3~0; 269#L172 assume ~send3~0 == ~id3~0; 270#L173 assume 0 == ~mode3~0 % 256; 282#L174 assume ~id4~0 >= 0; 222#L175 assume 0 == ~st4~0; 223#L176 assume ~send4~0 == ~id4~0; 272#L177 assume 0 == ~mode4~0 % 256; 261#L178 assume ~id1~0 != ~id2~0; 262#L179 assume ~id1~0 != ~id3~0; 216#L180 assume ~id1~0 != ~id4~0; 217#L181 assume ~id2~0 != ~id3~0; 256#L182 assume ~id2~0 != ~id4~0; 257#L183 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 231#L161-1 init_#res#1 := init_~tmp~0#1; 232#L254 main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 233#L310 assume !(0 == main_~i2~0#1); 218#L310-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 219#L320-2 [2021-11-22 15:35:09,974 INFO L793 eck$LassoCheckResult]: Loop: 219#L320-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 224#L61 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 225#L65 assume !(node1_~m1~0#1 != ~nomsg~0); 246#L65-1 ~mode1~0 := 0; 274#L61-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 275#L87 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 280#L90 assume !(node2_~m2~0#1 != ~nomsg~0); 252#L90-1 ~mode2~0 := 0; 227#L87-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 228#L112 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 279#L115 assume !(node3_~m3~0#1 != ~nomsg~0); 259#L115-1 ~mode3~0 := 0; 237#L112-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 284#L137 assume !(0 != ~mode4~0 % 256); 263#L150 assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite7#1 := ~send4~0; 249#L150-2 ~p4_new~0 := (if node4_#t~ite7#1 % 256 <= 127 then node4_#t~ite7#1 % 256 else node4_#t~ite7#1 % 256 - 256);havoc node4_#t~ite7#1;~mode4~0 := 1; 250#L137-2 assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 276#L262 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1#1 := 0; 241#L262-1 check_#res#1 := check_~tmp~1#1; 220#L282 main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 221#L347 assume !(0 == assert_~arg#1 % 256); 266#L342 assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 219#L320-2 [2021-11-22 15:35:09,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:09,975 INFO L85 PathProgramCache]: Analyzing trace with hash -24004505, now seen corresponding path program 1 times [2021-11-22 15:35:09,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:09,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518203484] [2021-11-22 15:35:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:09,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:35:10,020 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:35:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:35:10,086 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:35:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:10,087 INFO L85 PathProgramCache]: Analyzing trace with hash 374777131, now seen corresponding path program 1 times [2021-11-22 15:35:10,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:10,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674994849] [2021-11-22 15:35:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:10,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:10,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:10,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674994849] [2021-11-22 15:35:10,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674994849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:10,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:10,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:35:10,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843113549] [2021-11-22 15:35:10,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:10,218 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-22 15:35:10,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:35:10,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:10,220 INFO L87 Difference]: Start difference. First operand 71 states and 96 transitions. cyclomatic complexity: 26 Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:10,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:10,261 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2021-11-22 15:35:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:35:10,262 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 98 transitions. [2021-11-22 15:35:10,264 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-11-22 15:35:10,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 71 states and 93 transitions. [2021-11-22 15:35:10,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 71 [2021-11-22 15:35:10,265 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2021-11-22 15:35:10,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 93 transitions. [2021-11-22 15:35:10,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:35:10,266 INFO L681 BuchiCegarLoop]: Abstraction has 71 states and 93 transitions. [2021-11-22 15:35:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 93 transitions. [2021-11-22 15:35:10,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-22 15:35:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:10,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2021-11-22 15:35:10,272 INFO L704 BuchiCegarLoop]: Abstraction has 71 states and 93 transitions. [2021-11-22 15:35:10,272 INFO L587 BuchiCegarLoop]: Abstraction has 71 states and 93 transitions. [2021-11-22 15:35:10,272 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-22 15:35:10,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 93 transitions. [2021-11-22 15:35:10,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-11-22 15:35:10,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:35:10,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:35:10,276 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:10,276 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:10,276 INFO L791 eck$LassoCheckResult]: Stem: 435#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 425#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 399#L161 assume 0 == ~r1~0; 400#L162 assume ~id1~0 >= 0; 421#L163 assume 0 == ~st1~0; 403#L164 assume ~send1~0 == ~id1~0; 395#L165 assume 0 == ~mode1~0 % 256; 396#L166 assume ~id2~0 >= 0; 407#L167 assume 0 == ~st2~0; 386#L168 assume ~send2~0 == ~id2~0; 387#L169 assume 0 == ~mode2~0 % 256; 443#L170 assume ~id3~0 >= 0; 428#L171 assume 0 == ~st3~0; 426#L172 assume ~send3~0 == ~id3~0; 427#L173 assume 0 == ~mode3~0 % 256; 439#L174 assume ~id4~0 >= 0; 379#L175 assume 0 == ~st4~0; 380#L176 assume ~send4~0 == ~id4~0; 429#L177 assume 0 == ~mode4~0 % 256; 418#L178 assume ~id1~0 != ~id2~0; 419#L179 assume ~id1~0 != ~id3~0; 373#L180 assume ~id1~0 != ~id4~0; 374#L181 assume ~id2~0 != ~id3~0; 413#L182 assume ~id2~0 != ~id4~0; 414#L183 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 388#L161-1 init_#res#1 := init_~tmp~0#1; 389#L254 main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 390#L310 assume !(0 == main_~i2~0#1); 375#L310-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 376#L320-2 [2021-11-22 15:35:10,276 INFO L793 eck$LassoCheckResult]: Loop: 376#L320-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 381#L61 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 382#L65 assume !(node1_~m1~0#1 != ~nomsg~0); 402#L65-1 ~mode1~0 := 0; 431#L61-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 432#L87 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 437#L90 assume !(node2_~m2~0#1 != ~nomsg~0); 408#L90-1 ~mode2~0 := 0; 384#L87-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 385#L112 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 436#L115 assume !(node3_~m3~0#1 != ~nomsg~0); 416#L115-1 ~mode3~0 := 0; 394#L112-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 441#L137 assume !(0 != ~mode4~0 % 256); 420#L150 assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite7#1 := ~send4~0; 405#L150-2 ~p4_new~0 := (if node4_#t~ite7#1 % 256 <= 127 then node4_#t~ite7#1 % 256 else node4_#t~ite7#1 % 256 - 256);havoc node4_#t~ite7#1;~mode4~0 := 1; 406#L137-2 assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 433#L262 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 442#L263 assume ~r1~0 >= 4; 398#L267 assume ~r1~0 < 4;check_~tmp~1#1 := 1; 411#L262-1 check_#res#1 := check_~tmp~1#1; 377#L282 main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 378#L347 assume !(0 == assert_~arg#1 % 256); 423#L342 assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 376#L320-2 [2021-11-22 15:35:10,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash -24004505, now seen corresponding path program 2 times [2021-11-22 15:35:10,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:10,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402354543] [2021-11-22 15:35:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:10,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:35:10,295 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:35:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:35:10,320 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:35:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2032251205, now seen corresponding path program 1 times [2021-11-22 15:35:10,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:10,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060126295] [2021-11-22 15:35:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:10,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:10,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:10,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060126295] [2021-11-22 15:35:10,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060126295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:10,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:10,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:10,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980082300] [2021-11-22 15:35:10,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:10,391 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-22 15:35:10,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:10,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:10,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:10,393 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. cyclomatic complexity: 23 Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:10,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:10,440 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2021-11-22 15:35:10,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:10,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 146 transitions. [2021-11-22 15:35:10,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2021-11-22 15:35:10,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 107 states and 146 transitions. [2021-11-22 15:35:10,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2021-11-22 15:35:10,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2021-11-22 15:35:10,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 146 transitions. [2021-11-22 15:35:10,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:35:10,447 INFO L681 BuchiCegarLoop]: Abstraction has 107 states and 146 transitions. [2021-11-22 15:35:10,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 146 transitions. [2021-11-22 15:35:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-22 15:35:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 106 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 146 transitions. [2021-11-22 15:35:10,455 INFO L704 BuchiCegarLoop]: Abstraction has 107 states and 146 transitions. [2021-11-22 15:35:10,455 INFO L587 BuchiCegarLoop]: Abstraction has 107 states and 146 transitions. [2021-11-22 15:35:10,455 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-22 15:35:10,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 107 states and 146 transitions. [2021-11-22 15:35:10,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2021-11-22 15:35:10,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:35:10,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:35:10,459 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:10,459 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:10,459 INFO L791 eck$LassoCheckResult]: Stem: 621#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 611#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 583#L161 assume 0 == ~r1~0; 584#L162 assume ~id1~0 >= 0; 607#L163 assume 0 == ~st1~0; 587#L164 assume ~send1~0 == ~id1~0; 581#L165 assume 0 == ~mode1~0 % 256; 582#L166 assume ~id2~0 >= 0; 591#L167 assume 0 == ~st2~0; 570#L168 assume ~send2~0 == ~id2~0; 571#L169 assume 0 == ~mode2~0 % 256; 631#L170 assume ~id3~0 >= 0; 614#L171 assume 0 == ~st3~0; 612#L172 assume ~send3~0 == ~id3~0; 613#L173 assume 0 == ~mode3~0 % 256; 626#L174 assume ~id4~0 >= 0; 566#L175 assume 0 == ~st4~0; 567#L176 assume ~send4~0 == ~id4~0; 615#L177 assume 0 == ~mode4~0 % 256; 603#L178 assume ~id1~0 != ~id2~0; 604#L179 assume ~id1~0 != ~id3~0; 557#L180 assume ~id1~0 != ~id4~0; 558#L181 assume ~id2~0 != ~id3~0; 598#L182 assume ~id2~0 != ~id4~0; 602#L183 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 572#L161-1 init_#res#1 := init_~tmp~0#1; 573#L254 main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 574#L310 assume !(0 == main_~i2~0#1); 559#L310-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 560#L320-2 [2021-11-22 15:35:10,459 INFO L793 eck$LassoCheckResult]: Loop: 560#L320-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 563#L61 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 564#L65 assume !(node1_~m1~0#1 != ~nomsg~0); 586#L65-1 ~mode1~0 := 0; 617#L61-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 618#L87 assume !(0 != ~mode2~0 % 256); 624#L100 assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite5#1 := ~send2~0; 608#L100-2 ~p2_new~0 := (if node2_#t~ite5#1 % 256 <= 127 then node2_#t~ite5#1 % 256 else node2_#t~ite5#1 % 256 - 256);havoc node2_#t~ite5#1;~mode2~0 := 1; 568#L87-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 569#L112 assume !(0 != ~mode3~0 % 256); 588#L125 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite6#1 := ~send3~0; 577#L125-2 ~p3_new~0 := (if node3_#t~ite6#1 % 256 <= 127 then node3_#t~ite6#1 % 256 else node3_#t~ite6#1 % 256 - 256);havoc node3_#t~ite6#1;~mode3~0 := 1; 578#L112-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 642#L137 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 640#L140 assume !(node4_~m4~0#1 != ~nomsg~0); 637#L140-1 ~mode4~0 := 0; 635#L137-2 assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 634#L262 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 633#L263 assume !(~r1~0 >= 4); 579#L266 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0; 580#L267 assume ~r1~0 < 4;check_~tmp~1#1 := 1; 597#L262-1 check_#res#1 := check_~tmp~1#1; 561#L282 main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 562#L347 assume !(0 == assert_~arg#1 % 256); 609#L342 assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 560#L320-2 [2021-11-22 15:35:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash -24004505, now seen corresponding path program 3 times [2021-11-22 15:35:10,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:10,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222991755] [2021-11-22 15:35:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:10,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:35:10,478 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:35:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:35:10,504 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:35:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash 452535279, now seen corresponding path program 1 times [2021-11-22 15:35:10,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:10,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963053561] [2021-11-22 15:35:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:10,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:35:10,523 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:35:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:35:10,552 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:35:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -505574839, now seen corresponding path program 1 times [2021-11-22 15:35:10,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:10,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176249322] [2021-11-22 15:35:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:10,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:10,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:10,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176249322] [2021-11-22 15:35:10,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176249322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:10,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:10,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:10,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647894241] [2021-11-22 15:35:10,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:11,779 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:35:11,780 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:35:11,780 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:35:11,780 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:35:11,780 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:35:11,780 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:11,780 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:35:11,781 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:35:11,781 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4.ufo.BOUNDED-8.pals.c_Iteration4_Loop [2021-11-22 15:35:11,781 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:35:11,781 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:35:11,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:11,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:11,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:11,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:11,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:11,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:11,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:11,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:11,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:11,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:11,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:12,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:12,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:12,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:12,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:12,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:12,392 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-22 15:35:16,806 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:35:16,807 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:35:16,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:16,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:16,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:16,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:35:16,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:35:16,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-22 15:35:16,862 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-22 15:35:16,862 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post27#1=0} Honda state: {ULTIMATE.start_main_#t~post27#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-22 15:35:16,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:16,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:16,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:16,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:16,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:35:16,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:35:16,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-22 15:35:16,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:16,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:16,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:16,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:16,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:35:16,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:35:17,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-22 15:35:17,200 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-22 15:35:17,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:17,206 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:35:17,206 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:35:17,206 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:35:17,206 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:35:17,206 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:35:17,206 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:17,206 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:35:17,207 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:35:17,207 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4.ufo.BOUNDED-8.pals.c_Iteration4_Loop [2021-11-22 15:35:17,207 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:35:17,207 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:35:17,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:35:17,808 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-22 15:35:21,825 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:35:21,829 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:35:21,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:21,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:21,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:21,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-22 15:35:21,833 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 15:35:21,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:35:21,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:35:21,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:35:21,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:35:21,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:35:21,843 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:35:21,843 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:35:21,849 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:35:21,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:21,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:21,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:21,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:21,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-22 15:35:21,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 15:35:21,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:35:21,880 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:35:21,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:35:21,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:35:21,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:35:21,881 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:35:21,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:35:21,883 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:35:21,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:21,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:21,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:21,907 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:21,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-22 15:35:21,912 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 15:35:21,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:35:21,919 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:35:21,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:35:21,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:35:21,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:35:21,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:35:21,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:35:21,950 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:35:21,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:21,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:21,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:21,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:22,003 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 15:35:22,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-22 15:35:22,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:35:22,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:35:22,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:35:22,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:35:22,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:35:22,013 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:35:22,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:35:22,022 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:35:22,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:22,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:22,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:22,053 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:22,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-22 15:35:22,055 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 15:35:22,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:35:22,064 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:35:22,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:35:22,064 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-22 15:35:22,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:35:22,069 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-22 15:35:22,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:35:22,082 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:35:22,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:22,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:22,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:22,123 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:22,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-22 15:35:22,125 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 15:35:22,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:35:22,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:35:22,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:35:22,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:35:22,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:35:22,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:35:22,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:35:22,138 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:35:22,141 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-22 15:35:22,141 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-22 15:35:22,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:35:22,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:22,155 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:22,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-22 15:35:22,159 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:35:22,159 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-22 15:35:22,159 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:35:22,160 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0#1) = -2*ULTIMATE.start_main_~i2~0#1 + 15 Supporting invariants [] [2021-11-22 15:35:22,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:22,198 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-22 15:35:22,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:22,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:35:22,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:35:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:22,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:35:22,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:35:22,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:35:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:22,648 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-22 15:35:22,648 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 107 states and 146 transitions. cyclomatic complexity: 40 Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:22,716 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 107 states and 146 transitions. cyclomatic complexity: 40. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 184 states and 263 transitions. Complement of second has 4 states. [2021-11-22 15:35:22,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-22 15:35:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2021-11-22 15:35:22,720 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 93 transitions. Stem has 29 letters. Loop has 25 letters. [2021-11-22 15:35:22,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:35:22,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 93 transitions. Stem has 54 letters. Loop has 25 letters. [2021-11-22 15:35:22,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:35:22,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 93 transitions. Stem has 29 letters. Loop has 50 letters. [2021-11-22 15:35:22,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:35:22,729 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 263 transitions. [2021-11-22 15:35:22,738 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-22 15:35:22,738 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 0 states and 0 transitions. [2021-11-22 15:35:22,738 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-22 15:35:22,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-22 15:35:22,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-22 15:35:22,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:35:22,739 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:35:22,739 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:35:22,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:22,740 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:22,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:22,741 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-11-22 15:35:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:35:22,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-11-22 15:35:22,743 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-22 15:35:22,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 15:35:22,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-22 15:35:22,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-22 15:35:22,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-22 15:35:22,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:35:22,744 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:35:22,744 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:35:22,744 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:35:22,745 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-22 15:35:22,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-22 15:35:22,745 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-22 15:35:22,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-22 15:35:22,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.11 03:35:22 BoogieIcfgContainer [2021-11-22 15:35:22,756 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-22 15:35:22,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:35:22,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:35:22,757 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:35:22,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:35:09" (3/4) ... [2021-11-22 15:35:22,761 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 15:35:22,761 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:35:22,763 INFO L158 Benchmark]: Toolchain (without parser) took 14775.08ms. Allocated memory was 104.9MB in the beginning and 192.9MB in the end (delta: 88.1MB). Free memory was 65.2MB in the beginning and 145.1MB in the end (delta: -79.9MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-11-22 15:35:22,763 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:35:22,764 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.35ms. Allocated memory is still 104.9MB. Free memory was 65.0MB in the beginning and 76.0MB in the end (delta: -11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:35:22,765 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.31ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 73.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:35:22,765 INFO L158 Benchmark]: Boogie Preprocessor took 50.22ms. Allocated memory is still 104.9MB. Free memory was 73.7MB in the beginning and 72.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:35:22,773 INFO L158 Benchmark]: RCFGBuilder took 598.16ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 55.5MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-22 15:35:22,773 INFO L158 Benchmark]: BuchiAutomizer took 13704.71ms. Allocated memory was 104.9MB in the beginning and 192.9MB in the end (delta: 88.1MB). Free memory was 55.5MB in the beginning and 145.1MB in the end (delta: -89.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:35:22,773 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 192.9MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:35:22,776 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 is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.35ms. Allocated memory is still 104.9MB. Free memory was 65.0MB in the beginning and 76.0MB in the end (delta: -11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.31ms. Allocated memory is still 104.9MB. Free memory was 76.0MB in the beginning and 73.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.22ms. Allocated memory is still 104.9MB. Free memory was 73.7MB in the beginning and 72.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 598.16ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 55.5MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 13704.71ms. Allocated memory was 104.9MB in the beginning and 192.9MB in the end (delta: 88.1MB). Free memory was 55.5MB in the beginning and 145.1MB in the end (delta: -89.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 192.9MB. Free memory is still 145.1MB. There was no memory consumed. 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 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 15 + -2 * i2 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 12.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 42 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 107 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 279 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 1195 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 752 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 443 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital194 mio100 ax100 hnf100 lsp76 ukn67 mio100 lsp100 div162 bol100 ite100 ukn100 eq171 hnf69 smp100 dnf5114 smp24 tf100 neg98 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-22 15:35:22,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f87f4f-f073-489d-87c4-6b985b8e23f4/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE