./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:30:26,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:30:26,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:30:26,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:30:26,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:30:26,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:30:26,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:30:26,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:30:26,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:30:26,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:30:26,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:30:26,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:30:26,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:30:26,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:30:26,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:30:26,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:30:26,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:30:26,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:30:26,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:30:26,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:30:26,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:30:26,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:30:26,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:30:26,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:30:26,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:30:26,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:30:26,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:30:26,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:30:26,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:30:26,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:30:26,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:30:26,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:30:26,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:30:26,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:30:26,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:30:26,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:30:26,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:30:26,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:30:26,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:30:26,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:30:26,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:30:26,374 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-20 06:30:26,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:30:26,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:30:26,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:30:26,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:30:26,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:30:26,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:30:26,404 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:30:26,404 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 06:30:26,405 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 06:30:26,405 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 06:30:26,405 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 06:30:26,405 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 06:30:26,405 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 06:30:26,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:30:26,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:30:26,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:30:26,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:30:26,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:30:26,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:30:26,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 06:30:26,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 06:30:26,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 06:30:26,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:30:26,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:30:26,408 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 06:30:26,408 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:30:26,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 06:30:26,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:30:26,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:30:26,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:30:26,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:30:26,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:30:26,410 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 06:30:26,410 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_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a [2021-11-20 06:30:26,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:30:26,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:30:26,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:30:26,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:30:26,701 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:30:26,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2021-11-20 06:30:26,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/data/f6e2dec02/60b3d568fed54172b5e6989d4375c9e8/FLAG5baa8ec6c [2021-11-20 06:30:27,543 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:30:27,544 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2021-11-20 06:30:27,566 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/data/f6e2dec02/60b3d568fed54172b5e6989d4375c9e8/FLAG5baa8ec6c [2021-11-20 06:30:27,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/data/f6e2dec02/60b3d568fed54172b5e6989d4375c9e8 [2021-11-20 06:30:27,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:30:27,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:30:27,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:30:27,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:30:27,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:30:27,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:30:27" (1/1) ... [2021-11-20 06:30:27,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553a0790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:27, skipping insertion in model container [2021-11-20 06:30:27,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:30:27" (1/1) ... [2021-11-20 06:30:27,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:30:27,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:30:28,039 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_3fc73975-e4d5-4d04-9957-d572b0acea0e/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2021-11-20 06:30:28,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:30:28,545 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:30:28,561 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_3fc73975-e4d5-4d04-9957-d572b0acea0e/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2021-11-20 06:30:28,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:30:28,730 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:30:28,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28 WrapperNode [2021-11-20 06:30:28,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:30:28,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:30:28,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:30:28,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:30:28,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (1/1) ... [2021-11-20 06:30:28,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (1/1) ... [2021-11-20 06:30:29,915 INFO L137 Inliner]: procedures = 92, calls = 344, calls flagged for inlining = 196, calls inlined = 1755, statements flattened = 63923 [2021-11-20 06:30:29,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:30:29,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:30:29,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:30:29,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:30:29,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (1/1) ... [2021-11-20 06:30:29,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (1/1) ... [2021-11-20 06:30:30,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (1/1) ... [2021-11-20 06:30:30,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (1/1) ... [2021-11-20 06:30:30,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (1/1) ... [2021-11-20 06:30:31,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (1/1) ... [2021-11-20 06:30:31,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (1/1) ... [2021-11-20 06:30:31,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:30:31,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:30:31,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:30:31,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:30:31,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (1/1) ... [2021-11-20 06:30:31,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:30:31,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:30:31,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:30:31,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 06:30:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:30:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:30:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:30:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:30:32,162 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:30:32,165 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:30:52,141 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:30:52,271 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:30:52,271 INFO L301 CfgBuilder]: Removed 61 assume(true) statements. [2021-11-20 06:30:52,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:30:52 BoogieIcfgContainer [2021-11-20 06:30:52,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:30:52,293 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 06:30:52,293 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 06:30:52,296 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 06:30:52,297 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:30:52,297 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:30:27" (1/3) ... [2021-11-20 06:30:52,298 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@376a9001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:30:52, skipping insertion in model container [2021-11-20 06:30:52,298 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:30:52,299 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:30:28" (2/3) ... [2021-11-20 06:30:52,299 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@376a9001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:30:52, skipping insertion in model container [2021-11-20 06:30:52,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:30:52,299 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:30:52" (3/3) ... [2021-11-20 06:30:52,301 INFO L388 chiAutomizerObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2021-11-20 06:30:52,363 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 06:30:52,364 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 06:30:52,364 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 06:30:52,364 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 06:30:52,364 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 06:30:52,364 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 06:30:52,364 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 06:30:52,364 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 06:30:52,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17392 states, 17391 states have (on average 1.8840204703582313) internal successors, (32765), 17391 states have internal predecessors, (32765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:30:53,245 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:30:53,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:30:53,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:30:53,257 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, 1, 1, 1, 1, 1] [2021-11-20 06:30:53,257 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:30:53,257 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 06:30:53,301 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17392 states, 17391 states have (on average 1.8840204703582313) internal successors, (32765), 17391 states have internal predecessors, (32765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:30:53,533 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:30:53,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:30:53,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:30:53,537 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, 1, 1, 1, 1, 1] [2021-11-20 06:30:53,538 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:30:53,553 INFO L791 eck$LassoCheckResult]: Stem: 6961#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 4192#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 7614#L2919true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2779#L2912true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 15759#L2927true main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 16069#L3266true assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 10705#L3243true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 396#L2819true assume 0 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 4;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 3647#L2844true aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 3860#L2375true assume 0 == initPersonOnFloor_~floor#1; 15875#L2376true assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 13652#L2483-1true assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 7124#L2167true assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 11146#L2179-2true assume { :end_inline_callOnFloor } true; 15246#L2519true assume { :end_inline_initPersonOnFloor } true; 12449#L3004true assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 2567#L2819-1true assume 0 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 4;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 9670#L2844-1true angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 7081#L2375-1true assume 0 == initPersonOnFloor_~floor#1; 9991#L2376-2true assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 12662#L2483-3true assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 16573#L2167-2true assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 4274#L2179-5true assume { :end_inline_callOnFloor } true; 10275#L2519-1true assume { :end_inline_initPersonOnFloor } true; 14226#L3015true assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 4068#L738true __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 2151#L3288true assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 16154#L695true timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 9425#L1647true assume 0 != timeShift_~tmp~14#1; 13589#L1648true assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 16853#L1647-1true assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 13015#L3305true assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 10147#L3306true assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 2433#L1867true assume 1 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i~0#1 := 0;existInLiftCallsInDirection_~i~0#1 := 1 + ~currentFloorID~0; 7324#L1871-2true [2021-11-20 06:30:53,554 INFO L793 eck$LassoCheckResult]: Loop: 7324#L1871-2true assume !false; 68#L1872true assume existInLiftCallsInDirection_~i~0#1 < 5; 2752#L1873true assume !(0 == existInLiftCallsInDirection_~i~0#1); 8198#L1886true assume !(1 == existInLiftCallsInDirection_~i~0#1); 9312#L1895true assume !(2 == existInLiftCallsInDirection_~i~0#1); 13390#L1904true assume !(3 == existInLiftCallsInDirection_~i~0#1); 10511#L1913true assume !(4 == existInLiftCallsInDirection_~i~0#1); 16552#L1914-1true existInLiftCallsInDirection_~i~0#1 := 1 + existInLiftCallsInDirection_~i~0#1; 7324#L1871-2true [2021-11-20 06:30:53,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:30:53,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1544398965, now seen corresponding path program 1 times [2021-11-20 06:30:53,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:30:53,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424834697] [2021-11-20 06:30:53,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:30:53,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:30:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:30:53,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:30:53,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424834697] [2021-11-20 06:30:53,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424834697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:30:53,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:30:53,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:30:53,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200076436] [2021-11-20 06:30:53,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:30:53,990 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:30:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:30:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1775462013, now seen corresponding path program 1 times [2021-11-20 06:30:53,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:30:53,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370453131] [2021-11-20 06:30:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:30:53,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:30:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:30:54,007 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:30:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:30:54,047 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:30:54,129 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:30:54,129 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:30:54,129 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:30:54,130 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:30:54,130 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:30:54,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:30:54,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:30:54,130 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:30:54,130 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product22.cil.c_Iteration1_Loop [2021-11-20 06:30:54,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:30:54,131 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:30:54,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:30:54,208 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:30:54,209 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:30:54,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:30:54,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:30:54,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:30:54,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:30:54,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:30:54,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 06:30:54,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:30:54,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:30:54,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:30:54,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:30:54,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 06:30:54,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:30:54,296 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:30:54,348 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:30:54,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:30:54,353 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:30:54,354 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:30:54,354 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:30:54,354 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:30:54,354 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:30:54,354 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:30:54,354 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:30:54,354 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:30:54,354 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product22.cil.c_Iteration1_Loop [2021-11-20 06:30:54,354 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:30:54,354 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:30:54,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:30:54,421 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:30:54,425 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:30:54,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:30:54,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:30:54,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:30:54,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 06:30:54,447 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:30:54,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:30:54,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:30:54,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:30:54,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:30:54,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:30:54,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:30:54,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:30:54,479 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:30:54,486 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-20 06:30:54,487 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 06:30:54,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:30:54,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:30:54,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:30:54,494 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:30:54,494 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:30:54,494 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:30:54,495 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_existInLiftCallsInDirection_~i~0#1) = -1*ULTIMATE.start_existInLiftCallsInDirection_~i~0#1 Supporting invariants [] [2021-11-20 06:30:54,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 06:30:54,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:30:54,534 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:30:54,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:30:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:54,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:30:54,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:30:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:54,830 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:30:54,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:30:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:30:55,093 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-11-20 06:30:55,125 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17392 states, 17391 states have (on average 1.8840204703582313) internal successors, (32765), 17391 states have internal predecessors, (32765), 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 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:30:55,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fc73975-e4d5-4d04-9957-d572b0acea0e/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:05,348 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17392 states, 17391 states have (on average 1.8840204703582313) internal successors, (32765), 17391 states have internal predecessors, (32765), 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 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 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 204458 states and 385081 transitions. Complement of second has 18 states. [2021-11-20 06:31:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-11-20 06:31:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208931 transitions. [2021-11-20 06:31:05,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 208931 transitions. Stem has 34 letters. Loop has 8 letters. [2021-11-20 06:31:05,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:31:05,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 208931 transitions. Stem has 42 letters. Loop has 8 letters. [2021-11-20 06:31:05,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:31:05,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 208931 transitions. Stem has 34 letters. Loop has 16 letters. [2021-11-20 06:31:05,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:31:05,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 204458 states and 385081 transitions. [2021-11-20 06:31:07,599 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 27864 [2021-11-20 06:31:08,460 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 204458 states to 110811 states and 208654 transitions. [2021-11-20 06:31:08,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110781 [2021-11-20 06:31:08,611 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110782 [2021-11-20 06:31:08,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110811 states and 208654 transitions. [2021-11-20 06:31:08,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:08,615 INFO L681 BuchiCegarLoop]: Abstraction has 110811 states and 208654 transitions. [2021-11-20 06:31:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110811 states and 208654 transitions. [2021-11-20 06:31:10,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110811 to 31274. [2021-11-20 06:31:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31274 states, 31274 states have (on average 1.8800601138325765) internal successors, (58797), 31273 states have internal predecessors, (58797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31274 states to 31274 states and 58797 transitions. [2021-11-20 06:31:10,195 INFO L704 BuchiCegarLoop]: Abstraction has 31274 states and 58797 transitions. [2021-11-20 06:31:10,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:10,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:31:10,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:10,203 INFO L87 Difference]: Start difference. First operand 31274 states and 58797 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:11,608 INFO L93 Difference]: Finished difference Result 45181 states and 84793 transitions. [2021-11-20 06:31:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:11,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45181 states and 84793 transitions. [2021-11-20 06:31:11,823 INFO L131 ngComponentsAnalysis]: Automaton has 78 accepting balls. 15034 [2021-11-20 06:31:11,995 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45181 states to 45168 states and 84780 transitions. [2021-11-20 06:31:11,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45149 [2021-11-20 06:31:12,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45149 [2021-11-20 06:31:12,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45168 states and 84780 transitions. [2021-11-20 06:31:12,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:12,113 INFO L681 BuchiCegarLoop]: Abstraction has 45168 states and 84780 transitions. [2021-11-20 06:31:12,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45168 states and 84780 transitions. [2021-11-20 06:31:12,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45168 to 17389. [2021-11-20 06:31:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17389 states, 17389 states have (on average 1.8769912013341767) internal successors, (32639), 17388 states have internal predecessors, (32639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17389 states to 17389 states and 32639 transitions. [2021-11-20 06:31:12,569 INFO L704 BuchiCegarLoop]: Abstraction has 17389 states and 32639 transitions. [2021-11-20 06:31:12,569 INFO L587 BuchiCegarLoop]: Abstraction has 17389 states and 32639 transitions. [2021-11-20 06:31:12,569 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 06:31:12,570 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17389 states and 32639 transitions. [2021-11-20 06:31:12,645 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:31:12,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:12,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:12,648 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:12,649 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:12,649 INFO L791 eck$LassoCheckResult]: Stem: 310407#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 306832#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 306833#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 304505#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 304506#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 315727#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 313672#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 299503#L2819 assume !(0 == getOrigin_~person#1); 299504#L2823 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 305975#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 305976#L2375 assume 0 == initPersonOnFloor_~floor#1; 306311#L2376 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 298821#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 310571#L2167 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 304439#L2179-2 assume { :end_inline_callOnFloor } true; 313949#L2519 assume { :end_inline_initPersonOnFloor } true; 314667#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 304112#L2819-1 assume !(0 == getOrigin_~person#1); 304113#L2823-1 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 308631#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 310525#L2375-1 assume 0 == initPersonOnFloor_~floor#1; 310526#L2376-2 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 298957#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 314770#L2167-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 306941#L2179-5 assume { :end_inline_callOnFloor } true; 306942#L2519-1 assume { :end_inline_initPersonOnFloor } true; 313386#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 306644#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 303322#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 303323#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 312741#L1647 assume 0 != timeShift_~tmp~14#1; 312742#L1648 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 314812#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 314917#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 313293#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 303852#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 303853#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 302107#L1937-2 [2021-11-20 06:31:12,650 INFO L793 eck$LassoCheckResult]: Loop: 302107#L1937-2 assume !false; 302108#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 303756#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 305700#L1946-2 assume !false; 304970#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 304972#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 302107#L1937-2 [2021-11-20 06:31:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1440334859, now seen corresponding path program 1 times [2021-11-20 06:31:12,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:12,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821726741] [2021-11-20 06:31:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:12,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:12,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:12,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821726741] [2021-11-20 06:31:12,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821726741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:12,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:12,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:31:12,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998914498] [2021-11-20 06:31:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:12,807 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:12,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:12,808 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 1 times [2021-11-20 06:31:12,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:12,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609374882] [2021-11-20 06:31:12,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:12,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:12,818 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:12,829 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:12,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:12,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:31:12,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:31:12,866 INFO L87 Difference]: Start difference. First operand 17389 states and 32639 transitions. cyclomatic complexity: 15284 Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:14,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:14,488 INFO L93 Difference]: Finished difference Result 51950 states and 97487 transitions. [2021-11-20 06:31:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:14,490 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51950 states and 97487 transitions. [2021-11-20 06:31:15,004 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 11892 [2021-11-20 06:31:15,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51950 states to 51950 states and 97487 transitions. [2021-11-20 06:31:15,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51893 [2021-11-20 06:31:15,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51893 [2021-11-20 06:31:15,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51950 states and 97487 transitions. [2021-11-20 06:31:15,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:15,217 INFO L681 BuchiCegarLoop]: Abstraction has 51950 states and 97487 transitions. [2021-11-20 06:31:15,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51950 states and 97487 transitions. [2021-11-20 06:31:15,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51950 to 17404. [2021-11-20 06:31:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17404 states, 17404 states have (on average 1.876235348195817) internal successors, (32654), 17403 states have internal predecessors, (32654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17404 states to 17404 states and 32654 transitions. [2021-11-20 06:31:15,625 INFO L704 BuchiCegarLoop]: Abstraction has 17404 states and 32654 transitions. [2021-11-20 06:31:15,626 INFO L587 BuchiCegarLoop]: Abstraction has 17404 states and 32654 transitions. [2021-11-20 06:31:15,626 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 06:31:15,626 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17404 states and 32654 transitions. [2021-11-20 06:31:15,687 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:31:15,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:15,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:15,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:15,699 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:15,700 INFO L791 eck$LassoCheckResult]: Stem: 379752#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 376173#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 376174#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 373847#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 373848#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 385076#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 383018#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 368851#L2819 assume !(0 == getOrigin_~person#1); 368852#L2823 assume !(1 == getOrigin_~person#1); 377364#L2827 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 377365#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 385229#L2375 assume 0 == initPersonOnFloor_~floor#1; 385091#L2376 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 368169#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 379915#L2167 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 373783#L2179-2 assume { :end_inline_callOnFloor } true; 383295#L2519 assume { :end_inline_initPersonOnFloor } true; 384012#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 373456#L2819-1 assume !(0 == getOrigin_~person#1); 373457#L2823-1 assume !(1 == getOrigin_~person#1); 377975#L2827-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 379992#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 385225#L2375-1 assume 0 == initPersonOnFloor_~floor#1; 382532#L2376-2 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 368305#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 384116#L2167-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 376282#L2179-5 assume { :end_inline_callOnFloor } true; 376283#L2519-1 assume { :end_inline_initPersonOnFloor } true; 382732#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 375985#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 372668#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 372669#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 382086#L1647 assume 0 != timeShift_~tmp~14#1; 382087#L1648 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 384157#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 384263#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 382639#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 373197#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 373198#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 371452#L1937-2 [2021-11-20 06:31:15,700 INFO L793 eck$LassoCheckResult]: Loop: 371452#L1937-2 assume !false; 371453#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 373099#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 375042#L1946-2 assume !false; 374314#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 374316#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 371452#L1937-2 [2021-11-20 06:31:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash 920334271, now seen corresponding path program 1 times [2021-11-20 06:31:15,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:15,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133456824] [2021-11-20 06:31:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:15,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:15,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:15,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133456824] [2021-11-20 06:31:15,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133456824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:15,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:15,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:31:15,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005120583] [2021-11-20 06:31:15,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:15,780 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 2 times [2021-11-20 06:31:15,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:15,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448746861] [2021-11-20 06:31:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:15,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:15,794 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:15,805 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:15,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:15,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:31:15,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:31:15,831 INFO L87 Difference]: Start difference. First operand 17404 states and 32654 transitions. cyclomatic complexity: 15284 Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:16,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:16,586 INFO L93 Difference]: Finished difference Result 34629 states and 64981 transitions. [2021-11-20 06:31:16,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:31:16,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34629 states and 64981 transitions. [2021-11-20 06:31:16,699 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 7928 [2021-11-20 06:31:16,813 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34629 states to 34629 states and 64981 transitions. [2021-11-20 06:31:16,814 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34591 [2021-11-20 06:31:16,837 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34591 [2021-11-20 06:31:16,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34629 states and 64981 transitions. [2021-11-20 06:31:16,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:16,864 INFO L681 BuchiCegarLoop]: Abstraction has 34629 states and 64981 transitions. [2021-11-20 06:31:16,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34629 states and 64981 transitions. [2021-11-20 06:31:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34629 to 17370. [2021-11-20 06:31:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17370 states, 17370 states have (on average 1.875993091537133) internal successors, (32586), 17369 states have internal predecessors, (32586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17370 states to 17370 states and 32586 transitions. [2021-11-20 06:31:17,179 INFO L704 BuchiCegarLoop]: Abstraction has 17370 states and 32586 transitions. [2021-11-20 06:31:17,179 INFO L587 BuchiCegarLoop]: Abstraction has 17370 states and 32586 transitions. [2021-11-20 06:31:17,179 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 06:31:17,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17370 states and 32586 transitions. [2021-11-20 06:31:17,239 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:31:17,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:17,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:17,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:17,241 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:17,241 INFO L791 eck$LassoCheckResult]: Stem: 431774#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 428204#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 428205#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 425881#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 425882#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 437091#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 435037#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 420887#L2819 assume !(0 == getOrigin_~person#1); 420888#L2823 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 427349#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 427350#L2375 assume !(0 == initPersonOnFloor_~floor#1); 421851#L2402 assume !(1 == initPersonOnFloor_~floor#1); 421852#L2429 assume !(2 == initPersonOnFloor_~floor#1); 424751#L2456 assume 3 == initPersonOnFloor_~floor#1; 424752#L2457 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_3~0 := 1; 434161#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 431936#L2167 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 425815#L2179-2 assume { :end_inline_callOnFloor } true; 435312#L2519 assume { :end_inline_initPersonOnFloor } true; 436029#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 425488#L2819-1 assume !(0 == getOrigin_~person#1); 425489#L2823-1 assume !(1 == getOrigin_~person#1); 430001#L2827-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 432013#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 437238#L2375-1 assume 0 == initPersonOnFloor_~floor#1; 434548#L2376-2 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 420341#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 436133#L2167-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 428313#L2179-5 assume { :end_inline_callOnFloor } true; 428314#L2519-1 assume { :end_inline_initPersonOnFloor } true; 434749#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 428016#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 424702#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 424703#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 434102#L1647 assume 0 != timeShift_~tmp~14#1; 434103#L1648 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 436175#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 436279#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 434656#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 425229#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 425230#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 423487#L1937-2 [2021-11-20 06:31:17,242 INFO L793 eck$LassoCheckResult]: Loop: 423487#L1937-2 assume !false; 423488#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 425133#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 427074#L1946-2 assume !false; 426346#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 426348#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 423487#L1937-2 [2021-11-20 06:31:17,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:17,242 INFO L85 PathProgramCache]: Analyzing trace with hash -89409166, now seen corresponding path program 1 times [2021-11-20 06:31:17,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:17,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114135581] [2021-11-20 06:31:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:17,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:17,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:17,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114135581] [2021-11-20 06:31:17,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114135581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:17,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:17,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:31:17,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253632856] [2021-11-20 06:31:17,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:17,308 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:17,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:17,309 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 3 times [2021-11-20 06:31:17,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:17,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361824383] [2021-11-20 06:31:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:17,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:17,316 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:17,327 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:17,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:17,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:31:17,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:17,351 INFO L87 Difference]: Start difference. First operand 17370 states and 32586 transitions. cyclomatic complexity: 15250 Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:18,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:18,187 INFO L93 Difference]: Finished difference Result 24290 states and 45566 transitions. [2021-11-20 06:31:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:18,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24290 states and 45566 transitions. [2021-11-20 06:31:18,286 INFO L131 ngComponentsAnalysis]: Automaton has 42 accepting balls. 7564 [2021-11-20 06:31:18,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24290 states to 24290 states and 45566 transitions. [2021-11-20 06:31:18,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24271 [2021-11-20 06:31:18,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24271 [2021-11-20 06:31:18,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24290 states and 45566 transitions. [2021-11-20 06:31:18,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:18,406 INFO L681 BuchiCegarLoop]: Abstraction has 24290 states and 45566 transitions. [2021-11-20 06:31:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24290 states and 45566 transitions. [2021-11-20 06:31:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24290 to 17370. [2021-11-20 06:31:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17370 states, 17370 states have (on average 1.8756476683937824) internal successors, (32580), 17369 states have internal predecessors, (32580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17370 states to 17370 states and 32580 transitions. [2021-11-20 06:31:18,692 INFO L704 BuchiCegarLoop]: Abstraction has 17370 states and 32580 transitions. [2021-11-20 06:31:18,692 INFO L587 BuchiCegarLoop]: Abstraction has 17370 states and 32580 transitions. [2021-11-20 06:31:18,692 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 06:31:18,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17370 states and 32580 transitions. [2021-11-20 06:31:18,744 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:31:18,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:18,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:18,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:18,745 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:18,745 INFO L791 eck$LassoCheckResult]: Stem: 473447#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 469877#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 469878#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 467552#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 467553#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 478760#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 476706#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 462560#L2819 assume !(0 == getOrigin_~person#1); 462561#L2823 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 469022#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 469023#L2375 assume !(0 == initPersonOnFloor_~floor#1); 463524#L2402 assume !(1 == initPersonOnFloor_~floor#1); 463525#L2429 assume !(2 == initPersonOnFloor_~floor#1); 466423#L2456 assume 3 == initPersonOnFloor_~floor#1; 466424#L2457 assume !(0 == initPersonOnFloor_~person#1); 478354#L2460 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 475834#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 473609#L2167 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 467488#L2179-2 assume { :end_inline_callOnFloor } true; 476983#L2519 assume { :end_inline_initPersonOnFloor } true; 477699#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 467161#L2819-1 assume !(0 == getOrigin_~person#1); 467162#L2823-1 assume !(1 == getOrigin_~person#1); 471674#L2827-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 473686#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 478912#L2375-1 assume 0 == initPersonOnFloor_~floor#1; 476222#L2376-2 assume !(0 == initPersonOnFloor_~person#1); 476223#L2379-2 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_0~0 := 1; 462014#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 477803#L2167-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 469986#L2179-5 assume { :end_inline_callOnFloor } true; 469987#L2519-1 assume { :end_inline_initPersonOnFloor } true; 476422#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 469689#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 466375#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 466376#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 475776#L1647 assume 0 != timeShift_~tmp~14#1; 475777#L1648 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 477845#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 477949#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 476329#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 466902#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 466903#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 465159#L1937-2 [2021-11-20 06:31:18,746 INFO L793 eck$LassoCheckResult]: Loop: 465159#L1937-2 assume !false; 465160#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 466804#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 468746#L1946-2 assume !false; 468019#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 468021#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 465159#L1937-2 [2021-11-20 06:31:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash 132035382, now seen corresponding path program 1 times [2021-11-20 06:31:18,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:18,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357660956] [2021-11-20 06:31:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:18,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:18,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:18,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357660956] [2021-11-20 06:31:18,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357660956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:18,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:18,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:31:18,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140751780] [2021-11-20 06:31:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:18,793 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:18,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:18,793 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 4 times [2021-11-20 06:31:18,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:18,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493648035] [2021-11-20 06:31:18,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:18,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:18,799 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:18,804 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:18,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:18,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:31:18,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:31:18,828 INFO L87 Difference]: Start difference. First operand 17370 states and 32580 transitions. cyclomatic complexity: 15244 Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:19,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:19,962 INFO L93 Difference]: Finished difference Result 51909 states and 97401 transitions. [2021-11-20 06:31:19,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:19,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51909 states and 97401 transitions. [2021-11-20 06:31:20,147 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 11892 [2021-11-20 06:31:20,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51909 states to 51909 states and 97401 transitions. [2021-11-20 06:31:20,608 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51852 [2021-11-20 06:31:20,635 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51852 [2021-11-20 06:31:20,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51909 states and 97401 transitions. [2021-11-20 06:31:20,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:20,641 INFO L681 BuchiCegarLoop]: Abstraction has 51909 states and 97401 transitions. [2021-11-20 06:31:20,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51909 states and 97401 transitions. [2021-11-20 06:31:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51909 to 17374. [2021-11-20 06:31:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17374 states, 17374 states have (on average 1.8753885115690112) internal successors, (32583), 17373 states have internal predecessors, (32583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17374 states to 17374 states and 32583 transitions. [2021-11-20 06:31:20,976 INFO L704 BuchiCegarLoop]: Abstraction has 17374 states and 32583 transitions. [2021-11-20 06:31:20,976 INFO L587 BuchiCegarLoop]: Abstraction has 17374 states and 32583 transitions. [2021-11-20 06:31:20,976 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-20 06:31:20,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17374 states and 32583 transitions. [2021-11-20 06:31:21,017 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:31:21,017 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:21,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:21,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:21,019 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:21,019 INFO L791 eck$LassoCheckResult]: Stem: 542737#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 539167#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 539168#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 536841#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 536842#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 548050#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 545996#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 531848#L2819 assume !(0 == getOrigin_~person#1); 531849#L2823 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 538311#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 538312#L2375 assume !(0 == initPersonOnFloor_~floor#1); 532812#L2402 assume !(1 == initPersonOnFloor_~floor#1); 532813#L2429 assume !(2 == initPersonOnFloor_~floor#1); 535712#L2456 assume 3 == initPersonOnFloor_~floor#1; 535713#L2457 assume !(0 == initPersonOnFloor_~person#1); 547644#L2460 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 545124#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 542899#L2167 assume !(0 == callOnFloor_~floorID#1); 536776#L2170 assume 1 == callOnFloor_~floorID#1;~calls_1~0 := 1; 536777#L2179-2 assume { :end_inline_callOnFloor } true; 546273#L2519 assume { :end_inline_initPersonOnFloor } true; 546990#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 536450#L2819-1 assume !(0 == getOrigin_~person#1); 536451#L2823-1 assume !(1 == getOrigin_~person#1); 540964#L2827-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 542976#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 548196#L2375-1 assume 0 == initPersonOnFloor_~floor#1; 545512#L2376-2 assume !(0 == initPersonOnFloor_~person#1); 545513#L2379-2 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_0~0 := 1; 538489#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 547093#L2167-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 539276#L2179-5 assume { :end_inline_callOnFloor } true; 539277#L2519-1 assume { :end_inline_initPersonOnFloor } true; 545712#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 538979#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 535664#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 535665#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 545066#L1647 assume 0 != timeShift_~tmp~14#1; 545067#L1648 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 547135#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 547239#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 545619#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 536191#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 536192#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 534448#L1937-2 [2021-11-20 06:31:21,019 INFO L793 eck$LassoCheckResult]: Loop: 534448#L1937-2 assume !false; 534449#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 536093#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 538035#L1946-2 assume !false; 537308#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 537310#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 534448#L1937-2 [2021-11-20 06:31:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:21,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1673489519, now seen corresponding path program 1 times [2021-11-20 06:31:21,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:21,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729116642] [2021-11-20 06:31:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:21,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:21,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:21,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729116642] [2021-11-20 06:31:21,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729116642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:21,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:21,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:31:21,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968129428] [2021-11-20 06:31:21,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:21,062 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:21,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 5 times [2021-11-20 06:31:21,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:21,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806771521] [2021-11-20 06:31:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:21,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:21,067 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:21,071 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:21,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:31:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:31:21,090 INFO L87 Difference]: Start difference. First operand 17374 states and 32583 transitions. cyclomatic complexity: 15243 Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:22,041 INFO L93 Difference]: Finished difference Result 51914 states and 97403 transitions. [2021-11-20 06:31:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:22,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51914 states and 97403 transitions. [2021-11-20 06:31:22,217 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 11892 [2021-11-20 06:31:22,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51914 states to 51914 states and 97403 transitions. [2021-11-20 06:31:22,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51857 [2021-11-20 06:31:22,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51857 [2021-11-20 06:31:22,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51914 states and 97403 transitions. [2021-11-20 06:31:22,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:22,378 INFO L681 BuchiCegarLoop]: Abstraction has 51914 states and 97403 transitions. [2021-11-20 06:31:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51914 states and 97403 transitions. [2021-11-20 06:31:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51914 to 17380. [2021-11-20 06:31:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17380 states, 17380 states have (on average 1.8750287686996547) internal successors, (32588), 17379 states have internal predecessors, (32588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:22,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17380 states to 17380 states and 32588 transitions. [2021-11-20 06:31:22,727 INFO L704 BuchiCegarLoop]: Abstraction has 17380 states and 32588 transitions. [2021-11-20 06:31:22,727 INFO L587 BuchiCegarLoop]: Abstraction has 17380 states and 32588 transitions. [2021-11-20 06:31:22,727 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-20 06:31:22,727 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17380 states and 32588 transitions. [2021-11-20 06:31:22,985 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:31:22,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:22,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:22,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:22,986 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:22,986 INFO L791 eck$LassoCheckResult]: Stem: 612035#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 608464#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 608465#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 606138#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 606139#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 617349#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 615295#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 601145#L2819 assume !(0 == getOrigin_~person#1); 601146#L2823 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 607608#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 607609#L2375 assume !(0 == initPersonOnFloor_~floor#1); 602110#L2402 assume !(1 == initPersonOnFloor_~floor#1); 602111#L2429 assume !(2 == initPersonOnFloor_~floor#1); 605010#L2456 assume 3 == initPersonOnFloor_~floor#1; 605011#L2457 assume !(0 == initPersonOnFloor_~person#1); 616943#L2460 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 614423#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 612197#L2167 assume !(0 == callOnFloor_~floorID#1); 606074#L2170 assume !(1 == callOnFloor_~floorID#1); 606075#L2173 assume 2 == callOnFloor_~floorID#1;~calls_2~0 := 1; 613138#L2179-2 assume { :end_inline_callOnFloor } true; 615572#L2519 assume { :end_inline_initPersonOnFloor } true; 616288#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 605748#L2819-1 assume !(0 == getOrigin_~person#1); 605749#L2823-1 assume !(1 == getOrigin_~person#1); 610262#L2827-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 612274#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 617497#L2375-1 assume 0 == initPersonOnFloor_~floor#1; 614811#L2376-2 assume !(0 == initPersonOnFloor_~person#1); 614812#L2379-2 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_0~0 := 1; 607786#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 617504#L2167-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 608573#L2179-5 assume { :end_inline_callOnFloor } true; 608574#L2519-1 assume { :end_inline_initPersonOnFloor } true; 615011#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 608276#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 604962#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 604963#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 614365#L1647 assume 0 != timeShift_~tmp~14#1; 614366#L1648 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 616433#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 616538#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 614918#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 605489#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 605490#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 603746#L1937-2 [2021-11-20 06:31:22,986 INFO L793 eck$LassoCheckResult]: Loop: 603746#L1937-2 assume !false; 603747#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 605391#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 607332#L1946-2 assume !false; 606605#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 606607#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 603746#L1937-2 [2021-11-20 06:31:22,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:22,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1655087567, now seen corresponding path program 1 times [2021-11-20 06:31:22,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:22,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141523840] [2021-11-20 06:31:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:22,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:23,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:23,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141523840] [2021-11-20 06:31:23,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141523840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:23,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:23,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:31:23,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737925815] [2021-11-20 06:31:23,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:23,035 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:23,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:23,036 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 6 times [2021-11-20 06:31:23,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:23,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012571318] [2021-11-20 06:31:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:23,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:23,041 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:23,046 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:23,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:23,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:31:23,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:31:23,066 INFO L87 Difference]: Start difference. First operand 17380 states and 32588 transitions. cyclomatic complexity: 15242 Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:24,051 INFO L93 Difference]: Finished difference Result 51921 states and 97407 transitions. [2021-11-20 06:31:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:24,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51921 states and 97407 transitions. [2021-11-20 06:31:24,612 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 11892 [2021-11-20 06:31:24,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51921 states to 51921 states and 97407 transitions. [2021-11-20 06:31:24,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51864 [2021-11-20 06:31:24,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51864 [2021-11-20 06:31:24,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51921 states and 97407 transitions. [2021-11-20 06:31:24,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:24,796 INFO L681 BuchiCegarLoop]: Abstraction has 51921 states and 97407 transitions. [2021-11-20 06:31:24,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51921 states and 97407 transitions. [2021-11-20 06:31:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51921 to 17388. [2021-11-20 06:31:25,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17388 states, 17388 states have (on average 1.874568668046929) internal successors, (32595), 17387 states have internal predecessors, (32595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17388 states to 17388 states and 32595 transitions. [2021-11-20 06:31:25,095 INFO L704 BuchiCegarLoop]: Abstraction has 17388 states and 32595 transitions. [2021-11-20 06:31:25,095 INFO L587 BuchiCegarLoop]: Abstraction has 17388 states and 32595 transitions. [2021-11-20 06:31:25,095 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-20 06:31:25,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17388 states and 32595 transitions. [2021-11-20 06:31:25,139 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:31:25,139 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:25,139 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:25,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:25,140 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:25,140 INFO L791 eck$LassoCheckResult]: Stem: 681347#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 677774#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 677775#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 675450#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 675451#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 686663#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 684608#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 670455#L2819 assume !(0 == getOrigin_~person#1); 670456#L2823 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 676918#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 676919#L2375 assume !(0 == initPersonOnFloor_~floor#1); 671420#L2402 assume !(1 == initPersonOnFloor_~floor#1); 671421#L2429 assume !(2 == initPersonOnFloor_~floor#1); 674320#L2456 assume 3 == initPersonOnFloor_~floor#1; 674321#L2457 assume !(0 == initPersonOnFloor_~person#1); 686257#L2460 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 683736#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 681509#L2167 assume !(0 == callOnFloor_~floorID#1); 675384#L2170 assume !(1 == callOnFloor_~floorID#1); 675385#L2173 assume !(2 == callOnFloor_~floorID#1); 684397#L2176 assume 3 == callOnFloor_~floorID#1;~calls_3~0 := 1; 682450#L2179-2 assume { :end_inline_callOnFloor } true; 684885#L2519 assume { :end_inline_initPersonOnFloor } true; 685603#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 675058#L2819-1 assume !(0 == getOrigin_~person#1); 675059#L2823-1 assume !(1 == getOrigin_~person#1); 679573#L2827-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 681586#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 686809#L2375-1 assume 0 == initPersonOnFloor_~floor#1; 684124#L2376-2 assume !(0 == initPersonOnFloor_~person#1); 684125#L2379-2 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_0~0 := 1; 677096#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 686820#L2167-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 677883#L2179-5 assume { :end_inline_callOnFloor } true; 677884#L2519-1 assume { :end_inline_initPersonOnFloor } true; 684324#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 677586#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 674272#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 674273#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 683678#L1647 assume 0 != timeShift_~tmp~14#1; 683679#L1648 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 685748#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 685852#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 684231#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 674799#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 674800#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 673055#L1937-2 [2021-11-20 06:31:25,141 INFO L793 eck$LassoCheckResult]: Loop: 673055#L1937-2 assume !false; 673056#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 674701#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 676643#L1946-2 assume !false; 675915#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 675917#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 673055#L1937-2 [2021-11-20 06:31:25,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash -929528020, now seen corresponding path program 1 times [2021-11-20 06:31:25,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:25,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582534418] [2021-11-20 06:31:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:25,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:25,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:25,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582534418] [2021-11-20 06:31:25,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582534418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:25,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:25,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:31:25,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496019352] [2021-11-20 06:31:25,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:25,192 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:25,192 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 7 times [2021-11-20 06:31:25,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:25,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277658677] [2021-11-20 06:31:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:25,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:25,197 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:25,202 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:25,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:25,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:31:25,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:25,221 INFO L87 Difference]: Start difference. First operand 17388 states and 32595 transitions. cyclomatic complexity: 15241 Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:26,224 INFO L93 Difference]: Finished difference Result 38204 states and 71648 transitions. [2021-11-20 06:31:26,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:31:26,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38204 states and 71648 transitions. [2021-11-20 06:31:26,353 INFO L131 ngComponentsAnalysis]: Automaton has 60 accepting balls. 14764 [2021-11-20 06:31:26,448 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38204 states to 38204 states and 71648 transitions. [2021-11-20 06:31:26,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38185 [2021-11-20 06:31:26,470 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38185 [2021-11-20 06:31:26,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38204 states and 71648 transitions. [2021-11-20 06:31:26,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:26,472 INFO L681 BuchiCegarLoop]: Abstraction has 38204 states and 71648 transitions. [2021-11-20 06:31:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38204 states and 71648 transitions. [2021-11-20 06:31:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38204 to 17374. [2021-11-20 06:31:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17374 states, 17374 states have (on average 1.8745827097962473) internal successors, (32569), 17373 states have internal predecessors, (32569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17374 states to 17374 states and 32569 transitions. [2021-11-20 06:31:26,727 INFO L704 BuchiCegarLoop]: Abstraction has 17374 states and 32569 transitions. [2021-11-20 06:31:26,727 INFO L587 BuchiCegarLoop]: Abstraction has 17374 states and 32569 transitions. [2021-11-20 06:31:26,727 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-20 06:31:26,727 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17374 states and 32569 transitions. [2021-11-20 06:31:26,772 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:31:26,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:26,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:26,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:26,773 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:26,773 INFO L791 eck$LassoCheckResult]: Stem: 736951#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 733381#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 733382#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 731057#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 731058#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 742263#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 740208#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 726063#L2819 assume !(0 == getOrigin_~person#1); 726064#L2823 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 732527#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 732528#L2375 assume !(0 == initPersonOnFloor_~floor#1); 727028#L2402 assume !(1 == initPersonOnFloor_~floor#1); 727029#L2429 assume !(2 == initPersonOnFloor_~floor#1); 729929#L2456 assume 3 == initPersonOnFloor_~floor#1; 729930#L2457 assume !(0 == initPersonOnFloor_~person#1); 741856#L2460 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 739336#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 737112#L2167 assume !(0 == callOnFloor_~floorID#1); 730993#L2170 assume !(1 == callOnFloor_~floorID#1); 730994#L2173 assume !(2 == callOnFloor_~floorID#1); 739995#L2176 assume 3 == callOnFloor_~floorID#1;~calls_3~0 := 1; 738052#L2179-2 assume { :end_inline_callOnFloor } true; 740485#L2519 assume { :end_inline_initPersonOnFloor } true; 741200#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 730667#L2819-1 assume !(0 == getOrigin_~person#1); 730668#L2823-1 assume !(1 == getOrigin_~person#1); 735178#L2827-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 737189#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 737067#L2375-1 assume !(0 == initPersonOnFloor_~floor#1); 732913#L2402-1 assume 1 == initPersonOnFloor_~floor#1; 732914#L2403-2 assume !(0 == initPersonOnFloor_~person#1); 733510#L2406-2 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_1~0 := 1; 726607#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 742409#L2167-2 assume !(0 == callOnFloor_~floorID#1); 742407#L2170-2 assume 1 == callOnFloor_~floorID#1;~calls_1~0 := 1; 733490#L2179-5 assume { :end_inline_callOnFloor } true; 733491#L2519-1 assume { :end_inline_initPersonOnFloor } true; 739922#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 733193#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 729881#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 729882#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 739278#L1647 assume 0 != timeShift_~tmp~14#1; 739279#L1648 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 741347#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 741451#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 739829#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 730408#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 730409#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 728664#L1937-2 [2021-11-20 06:31:26,774 INFO L793 eck$LassoCheckResult]: Loop: 728664#L1937-2 assume !false; 728665#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 730310#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 732251#L1946-2 assume !false; 731524#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 731526#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 728664#L1937-2 [2021-11-20 06:31:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:26,774 INFO L85 PathProgramCache]: Analyzing trace with hash 897706626, now seen corresponding path program 1 times [2021-11-20 06:31:26,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:26,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408302113] [2021-11-20 06:31:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:26,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:26,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:26,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408302113] [2021-11-20 06:31:26,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408302113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:26,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:26,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:31:26,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929700542] [2021-11-20 06:31:26,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:26,823 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:26,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 8 times [2021-11-20 06:31:26,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:26,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989415153] [2021-11-20 06:31:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:26,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:26,828 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:26,833 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:26,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:31:26,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:26,852 INFO L87 Difference]: Start difference. First operand 17374 states and 32569 transitions. cyclomatic complexity: 15229 Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:27,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:27,716 INFO L93 Difference]: Finished difference Result 38178 states and 71599 transitions. [2021-11-20 06:31:27,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:31:27,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38178 states and 71599 transitions. [2021-11-20 06:31:27,853 INFO L131 ngComponentsAnalysis]: Automaton has 60 accepting balls. 14764 [2021-11-20 06:31:27,954 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38178 states to 38178 states and 71599 transitions. [2021-11-20 06:31:27,954 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38159 [2021-11-20 06:31:27,979 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38159 [2021-11-20 06:31:27,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38178 states and 71599 transitions. [2021-11-20 06:31:27,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:27,980 INFO L681 BuchiCegarLoop]: Abstraction has 38178 states and 71599 transitions. [2021-11-20 06:31:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38178 states and 71599 transitions. [2021-11-20 06:31:28,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38178 to 17368. [2021-11-20 06:31:28,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17368 states, 17368 states have (on average 1.8744818056195303) internal successors, (32556), 17367 states have internal predecessors, (32556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17368 states to 17368 states and 32556 transitions. [2021-11-20 06:31:28,600 INFO L704 BuchiCegarLoop]: Abstraction has 17368 states and 32556 transitions. [2021-11-20 06:31:28,600 INFO L587 BuchiCegarLoop]: Abstraction has 17368 states and 32556 transitions. [2021-11-20 06:31:28,601 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-20 06:31:28,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17368 states and 32556 transitions. [2021-11-20 06:31:28,655 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:31:28,655 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:28,656 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:28,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:28,656 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:28,656 INFO L791 eck$LassoCheckResult]: Stem: 792512#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 788944#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 788945#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 786620#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 786621#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 797826#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 795772#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 781631#L2819 assume !(0 == getOrigin_~person#1); 781632#L2823 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 788090#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 788091#L2375 assume !(0 == initPersonOnFloor_~floor#1); 782593#L2402 assume !(1 == initPersonOnFloor_~floor#1); 782594#L2429 assume !(2 == initPersonOnFloor_~floor#1); 785492#L2456 assume 3 == initPersonOnFloor_~floor#1; 785493#L2457 assume !(0 == initPersonOnFloor_~person#1); 797420#L2460 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 794900#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 792673#L2167 assume !(0 == callOnFloor_~floorID#1); 786556#L2170 assume !(1 == callOnFloor_~floorID#1); 786557#L2173 assume !(2 == callOnFloor_~floorID#1); 795559#L2176 assume 3 == callOnFloor_~floorID#1;~calls_3~0 := 1; 793613#L2179-2 assume { :end_inline_callOnFloor } true; 796049#L2519 assume { :end_inline_initPersonOnFloor } true; 796765#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 786230#L2819-1 assume !(0 == getOrigin_~person#1); 786231#L2823-1 assume !(1 == getOrigin_~person#1); 790739#L2827-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 792750#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 792628#L2375-1 assume !(0 == initPersonOnFloor_~floor#1); 788475#L2402-1 assume !(1 == initPersonOnFloor_~floor#1); 788476#L2429-1 assume 2 == initPersonOnFloor_~floor#1; 785067#L2430-2 assume !(0 == initPersonOnFloor_~person#1); 785068#L2433-2 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_2~0 := 1; 781085#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 796869#L2167-2 assume !(0 == callOnFloor_~floorID#1); 797974#L2170-2 assume !(1 == callOnFloor_~floorID#1); 797973#L2173-2 assume 2 == callOnFloor_~floorID#1;~calls_2~0 := 1; 789053#L2179-5 assume { :end_inline_callOnFloor } true; 789054#L2519-1 assume { :end_inline_initPersonOnFloor } true; 795486#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 788756#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 785444#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 785445#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 794842#L1647 assume 0 != timeShift_~tmp~14#1; 794843#L1648 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 796910#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 797015#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 795393#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 785971#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 785972#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 784229#L1937-2 [2021-11-20 06:31:28,657 INFO L793 eck$LassoCheckResult]: Loop: 784229#L1937-2 assume !false; 784230#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 785873#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 787814#L1946-2 assume !false; 787087#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 787089#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 784229#L1937-2 [2021-11-20 06:31:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1058059427, now seen corresponding path program 1 times [2021-11-20 06:31:28,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:28,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479863088] [2021-11-20 06:31:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:28,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:28,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:28,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479863088] [2021-11-20 06:31:28,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479863088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:28,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:28,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:31:28,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984481145] [2021-11-20 06:31:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:28,708 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:28,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:28,708 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 9 times [2021-11-20 06:31:28,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:28,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785549851] [2021-11-20 06:31:28,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:28,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:28,713 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:28,718 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:28,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:28,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:31:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:31:28,738 INFO L87 Difference]: Start difference. First operand 17368 states and 32556 transitions. cyclomatic complexity: 15222 Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:29,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:29,357 INFO L93 Difference]: Finished difference Result 24329 states and 45593 transitions. [2021-11-20 06:31:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:29,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24329 states and 45593 transitions. [2021-11-20 06:31:29,458 INFO L131 ngComponentsAnalysis]: Automaton has 42 accepting balls. 7564 [2021-11-20 06:31:29,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24329 states to 24329 states and 45593 transitions. [2021-11-20 06:31:29,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24310 [2021-11-20 06:31:29,552 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24310 [2021-11-20 06:31:29,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24329 states and 45593 transitions. [2021-11-20 06:31:29,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:29,554 INFO L681 BuchiCegarLoop]: Abstraction has 24329 states and 45593 transitions. [2021-11-20 06:31:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24329 states and 45593 transitions. [2021-11-20 06:31:29,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24329 to 17368. [2021-11-20 06:31:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17368 states, 17368 states have (on average 1.8740211883924458) internal successors, (32548), 17367 states have internal predecessors, (32548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17368 states to 17368 states and 32548 transitions. [2021-11-20 06:31:29,805 INFO L704 BuchiCegarLoop]: Abstraction has 17368 states and 32548 transitions. [2021-11-20 06:31:29,805 INFO L587 BuchiCegarLoop]: Abstraction has 17368 states and 32548 transitions. [2021-11-20 06:31:29,805 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-11-20 06:31:29,805 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17368 states and 32548 transitions. [2021-11-20 06:31:29,860 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 3964 [2021-11-20 06:31:29,860 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:29,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:29,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:29,861 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:29,861 INFO L791 eck$LassoCheckResult]: Stem: 834220#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 830650#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 830651#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 828326#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 828327#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 839528#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 837475#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 823338#L2819 assume !(0 == getOrigin_~person#1); 823339#L2823 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 829796#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 829797#L2375 assume !(0 == initPersonOnFloor_~floor#1); 824300#L2402 assume !(1 == initPersonOnFloor_~floor#1); 824301#L2429 assume !(2 == initPersonOnFloor_~floor#1); 827198#L2456 assume 3 == initPersonOnFloor_~floor#1; 827199#L2457 assume !(0 == initPersonOnFloor_~person#1); 839122#L2460 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 836606#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 834381#L2167 assume !(0 == callOnFloor_~floorID#1); 828262#L2170 assume !(1 == callOnFloor_~floorID#1); 828263#L2173 assume !(2 == callOnFloor_~floorID#1); 837264#L2176 assume 3 == callOnFloor_~floorID#1;~calls_3~0 := 1; 835321#L2179-2 assume { :end_inline_callOnFloor } true; 837752#L2519 assume { :end_inline_initPersonOnFloor } true; 838467#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 827936#L2819-1 assume !(0 == getOrigin_~person#1); 827937#L2823-1 assume !(1 == getOrigin_~person#1); 832447#L2827-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 834458#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 834336#L2375-1 assume !(0 == initPersonOnFloor_~floor#1); 830183#L2402-1 assume !(1 == initPersonOnFloor_~floor#1); 830184#L2429-1 assume 2 == initPersonOnFloor_~floor#1; 826773#L2430-2 assume !(0 == initPersonOnFloor_~person#1); 826774#L2433-2 assume !(1 == initPersonOnFloor_~person#1); 834330#L2436-2 assume 2 == initPersonOnFloor_~person#1;~personOnFloor_2_2~0 := 1; 822792#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 839680#L2167-2 assume !(0 == callOnFloor_~floorID#1); 839679#L2170-2 assume !(1 == callOnFloor_~floorID#1); 839678#L2173-2 assume 2 == callOnFloor_~floorID#1;~calls_2~0 := 1; 830759#L2179-5 assume { :end_inline_callOnFloor } true; 830760#L2519-1 assume { :end_inline_initPersonOnFloor } true; 837191#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 830462#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 827150#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 827151#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 836548#L1647 assume 0 != timeShift_~tmp~14#1; 836549#L1648 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 838613#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 838717#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 837098#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 827677#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 827678#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 825935#L1937-2 [2021-11-20 06:31:29,861 INFO L793 eck$LassoCheckResult]: Loop: 825935#L1937-2 assume !false; 825936#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 827579#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 829520#L1946-2 assume !false; 828793#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 828795#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 825935#L1937-2 [2021-11-20 06:31:29,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:29,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1946841046, now seen corresponding path program 1 times [2021-11-20 06:31:29,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:29,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384370013] [2021-11-20 06:31:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:29,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:29,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:29,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384370013] [2021-11-20 06:31:29,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384370013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:29,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:29,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:31:29,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526406423] [2021-11-20 06:31:29,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:29,927 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:29,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 10 times [2021-11-20 06:31:29,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:29,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219967645] [2021-11-20 06:31:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:29,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:29,933 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:29,937 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:29,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:29,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:31:29,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:31:29,957 INFO L87 Difference]: Start difference. First operand 17368 states and 32548 transitions. cyclomatic complexity: 15214 Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:30,993 INFO L93 Difference]: Finished difference Result 32858 states and 61690 transitions. [2021-11-20 06:31:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:31:30,995 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32858 states and 61690 transitions. [2021-11-20 06:31:31,124 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 6896 [2021-11-20 06:31:31,208 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32858 states to 32858 states and 61690 transitions. [2021-11-20 06:31:31,208 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32820 [2021-11-20 06:31:31,228 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32820 [2021-11-20 06:31:31,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32858 states and 61690 transitions. [2021-11-20 06:31:31,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:31:31,240 INFO L681 BuchiCegarLoop]: Abstraction has 32858 states and 61690 transitions. [2021-11-20 06:31:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32858 states and 61690 transitions. [2021-11-20 06:31:31,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32858 to 27846. [2021-11-20 06:31:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27846 states, 27846 states have (on average 1.8746678158442864) internal successors, (52202), 27845 states have internal predecessors, (52202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27846 states to 27846 states and 52202 transitions. [2021-11-20 06:31:31,580 INFO L704 BuchiCegarLoop]: Abstraction has 27846 states and 52202 transitions. [2021-11-20 06:31:31,580 INFO L587 BuchiCegarLoop]: Abstraction has 27846 states and 52202 transitions. [2021-11-20 06:31:31,580 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-11-20 06:31:31,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27846 states and 52202 transitions. [2021-11-20 06:31:31,651 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 6896 [2021-11-20 06:31:31,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:31:31,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:31:31,652 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:31,652 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:31:31,652 INFO L791 eck$LassoCheckResult]: Stem: 884638#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);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(10, 16);call #Ultimate.allocInit(4, 17);call write~init~int(91, 17, 0, 1);call write~init~int(95, 17, 1, 1);call write~init~int(93, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(4, 18);call write~init~int(91, 18, 0, 1);call write~init~int(93, 18, 1, 1);call write~init~int(32, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(5, 19);call write~init~int(32, 19, 0, 1);call write~init~int(97, 19, 1, 1);call write~init~int(116, 19, 2, 1);call write~init~int(32, 19, 3, 1);call write~init~int(0, 19, 4, 1);call #Ultimate.allocInit(3, 20);call write~init~int(37, 20, 0, 1);call write~init~int(105, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(10, 21);call #Ultimate.allocInit(3, 22);call write~init~int(117, 22, 0, 1);call write~init~int(112, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(5, 23);call write~init~int(100, 23, 0, 1);call write~init~int(111, 23, 1, 1);call write~init~int(119, 23, 2, 1);call write~init~int(110, 23, 3, 1);call write~init~int(0, 23, 4, 1);call #Ultimate.allocInit(7, 24);call write~init~int(32, 24, 0, 1);call write~init~int(73, 24, 1, 1);call write~init~int(76, 24, 2, 1);call write~init~int(95, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(4, 25);call write~init~int(32, 25, 0, 1);call write~init~int(37, 25, 1, 1);call write~init~int(105, 25, 2, 1);call write~init~int(0, 25, 3, 1);call #Ultimate.allocInit(4, 26);call write~init~int(32, 26, 0, 1);call write~init~int(37, 26, 1, 1);call write~init~int(105, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(4, 27);call write~init~int(32, 27, 0, 1);call write~init~int(37, 27, 1, 1);call write~init~int(105, 27, 2, 1);call write~init~int(0, 27, 3, 1);call #Ultimate.allocInit(4, 28);call write~init~int(32, 28, 0, 1);call write~init~int(37, 28, 1, 1);call write~init~int(105, 28, 2, 1);call write~init~int(0, 28, 3, 1);call #Ultimate.allocInit(4, 29);call write~init~int(32, 29, 0, 1);call write~init~int(37, 29, 1, 1);call write~init~int(105, 29, 2, 1);call write~init~int(0, 29, 3, 1);call #Ultimate.allocInit(6, 30);call write~init~int(32, 30, 0, 1);call write~init~int(70, 30, 1, 1);call write~init~int(95, 30, 2, 1);call write~init~int(112, 30, 3, 1);call write~init~int(58, 30, 4, 1);call write~init~int(0, 30, 5, 1);call #Ultimate.allocInit(4, 31);call write~init~int(32, 31, 0, 1);call write~init~int(37, 31, 1, 1);call write~init~int(105, 31, 2, 1);call write~init~int(0, 31, 3, 1);call #Ultimate.allocInit(4, 32);call write~init~int(32, 32, 0, 1);call write~init~int(37, 32, 1, 1);call write~init~int(105, 32, 2, 1);call write~init~int(0, 32, 3, 1);call #Ultimate.allocInit(4, 33);call write~init~int(32, 33, 0, 1);call write~init~int(37, 33, 1, 1);call write~init~int(105, 33, 2, 1);call write~init~int(0, 33, 3, 1);call #Ultimate.allocInit(4, 34);call write~init~int(32, 34, 0, 1);call write~init~int(37, 34, 1, 1);call write~init~int(105, 34, 2, 1);call write~init~int(0, 34, 3, 1);call #Ultimate.allocInit(4, 35);call write~init~int(32, 35, 0, 1);call write~init~int(37, 35, 1, 1);call write~init~int(105, 35, 2, 1);call write~init~int(0, 35, 3, 1);call #Ultimate.allocInit(2, 36);call write~init~int(10, 36, 0, 1);call write~init~int(0, 36, 1, 1);call #Ultimate.allocInit(9, 37);~head~0.base, ~head~0.offset := 0, 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0; 880958#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret128#1, main_~retValue_acc~27#1, main_~tmp~27#1;havoc main_~retValue_acc~27#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 880959#L2919 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 878598#L2912 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~25#1;havoc valid_product_~retValue_acc~25#1;valid_product_~retValue_acc~25#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~25#1; 878599#L2927 main_#t~ret128#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret128#1;havoc main_#t~ret128#1; 890598#L3266 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 888146#L3243 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret117#1, aliceCall_~tmp~20#1;havoc aliceCall_~tmp~20#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 873571#L2819 assume !(0 == getOrigin_~person#1); 873572#L2823 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 880081#L2844 aliceCall_#t~ret117#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret117#1;havoc aliceCall_#t~ret117#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~20#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 880082#L2375 assume !(0 == initPersonOnFloor_~floor#1); 874535#L2402 assume !(1 == initPersonOnFloor_~floor#1); 874536#L2429 assume !(2 == initPersonOnFloor_~floor#1); 877455#L2456 assume 3 == initPersonOnFloor_~floor#1; 877456#L2457 assume !(0 == initPersonOnFloor_~person#1); 890041#L2460 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 887194#L2483-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 884810#L2167 assume !(0 == callOnFloor_~floorID#1); 878531#L2170 assume !(1 == callOnFloor_~floorID#1); 878532#L2173 assume !(2 == callOnFloor_~floorID#1); 887911#L2176 assume 3 == callOnFloor_~floorID#1;~calls_3~0 := 1; 885806#L2179-2 assume { :end_inline_callOnFloor } true; 888456#L2519 assume { :end_inline_initPersonOnFloor } true; 889278#L3004 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret118#1, angelinaCall_~tmp~21#1;havoc angelinaCall_~tmp~21#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~22#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~22#1; 878202#L2819-1 assume !(0 == getOrigin_~person#1); 878203#L2823-1 assume !(1 == getOrigin_~person#1); 882801#L2827-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~22#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~22#1; 884890#L2844-1 angelinaCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret118#1;havoc angelinaCall_#t~ret118#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~21#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 884762#L2375-1 assume !(0 == initPersonOnFloor_~floor#1); 880478#L2402-1 assume !(1 == initPersonOnFloor_~floor#1); 880479#L2429-1 assume 2 == initPersonOnFloor_~floor#1; 877023#L2430-2 assume !(0 == initPersonOnFloor_~person#1); 877024#L2433-2 assume !(1 == initPersonOnFloor_~person#1); 884758#L2436-2 assume 2 == initPersonOnFloor_~person#1;~personOnFloor_2_2~0 := 1; 873024#L2483-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 890843#L2167-2 assume !(0 == callOnFloor_~floorID#1); 890842#L2170-2 assume !(1 == callOnFloor_~floorID#1); 890841#L2173-2 assume 2 == callOnFloor_~floorID#1;~calls_2~0 := 1; 881073#L2179-5 assume { :end_inline_callOnFloor } true; 881074#L2519-1 assume { :end_inline_initPersonOnFloor } true; 887837#L3015 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret79#1, timeShift_~tmp~14#1;havoc timeShift_~tmp~14#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret129#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~7#1;havoc getCurrentHeading_~retValue_acc~7#1;getCurrentHeading_~retValue_acc~7#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~7#1; 880762#L738 __utac_acc__Specification13_spec__1_#t~ret129#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret129#1;havoc __utac_acc__Specification13_spec__1_#t~ret129#1; 877406#L3288 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~5#1;havoc areDoorsOpen_~retValue_acc~5#1;areDoorsOpen_~retValue_acc~5#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; 877407#L695 timeShift_#t~ret79#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~14#1 := timeShift_#t~ret79#1;havoc timeShift_#t~ret79#1; 887130#L1647 assume !(0 != timeShift_~tmp~14#1);~blocked~0 := 0;assume { :begin_inline_timeShift__wrappee__twothirdsfull } true;havoc timeShift__wrappee__twothirdsfull_#t~ret68#1, timeShift__wrappee__twothirdsfull_#t~ret69#1, timeShift__wrappee__twothirdsfull_#t~ret70#1, timeShift__wrappee__twothirdsfull_#t~ret71#1, timeShift__wrappee__twothirdsfull_#t~ret72#1, timeShift__wrappee__twothirdsfull_#t~ret73#1, timeShift__wrappee__twothirdsfull_#t~ret74#1, timeShift__wrappee__twothirdsfull_#t~ret75#1, timeShift__wrappee__twothirdsfull_#t~ret76#1, timeShift__wrappee__twothirdsfull_#t~ret77#1, timeShift__wrappee__twothirdsfull_#t~ret78#1, timeShift__wrappee__twothirdsfull_~tmp~13#1, timeShift__wrappee__twothirdsfull_~tmp___0~5#1, timeShift__wrappee__twothirdsfull_~tmp___1~3#1, timeShift__wrappee__twothirdsfull_~tmp___2~3#1, timeShift__wrappee__twothirdsfull_~tmp___3~3#1, timeShift__wrappee__twothirdsfull_~tmp___4~2#1, timeShift__wrappee__twothirdsfull_~tmp___5~2#1, timeShift__wrappee__twothirdsfull_~tmp___6~2#1, timeShift__wrappee__twothirdsfull_~tmp___7~2#1, timeShift__wrappee__twothirdsfull_~tmp___8~2#1, timeShift__wrappee__twothirdsfull_~tmp___9~2#1;havoc timeShift__wrappee__twothirdsfull_~tmp~13#1;havoc timeShift__wrappee__twothirdsfull_~tmp___0~5#1;havoc timeShift__wrappee__twothirdsfull_~tmp___1~3#1;havoc timeShift__wrappee__twothirdsfull_~tmp___2~3#1;havoc timeShift__wrappee__twothirdsfull_~tmp___3~3#1;havoc timeShift__wrappee__twothirdsfull_~tmp___4~2#1;havoc timeShift__wrappee__twothirdsfull_~tmp___5~2#1;havoc timeShift__wrappee__twothirdsfull_~tmp___6~2#1;havoc timeShift__wrappee__twothirdsfull_~tmp___7~2#1;havoc timeShift__wrappee__twothirdsfull_~tmp___8~2#1;havoc timeShift__wrappee__twothirdsfull_~tmp___9~2#1;assume { :begin_inline_stopRequestedAtCurrentFloor } true;havoc stopRequestedAtCurrentFloor_#res#1;havoc stopRequestedAtCurrentFloor_#t~ret53#1, stopRequestedAtCurrentFloor_#t~ret54#1, stopRequestedAtCurrentFloor_#t~ret55#1, stopRequestedAtCurrentFloor_~retValue_acc~15#1, stopRequestedAtCurrentFloor_~tmp~11#1, stopRequestedAtCurrentFloor_~tmp___0~3#1, stopRequestedAtCurrentFloor_~__cil_tmp4~2#1, stopRequestedAtCurrentFloor_~__cil_tmp5~4#1;havoc stopRequestedAtCurrentFloor_~retValue_acc~15#1;havoc stopRequestedAtCurrentFloor_~tmp~11#1;havoc stopRequestedAtCurrentFloor_~tmp___0~3#1;havoc stopRequestedAtCurrentFloor_~__cil_tmp4~2#1;havoc stopRequestedAtCurrentFloor_~__cil_tmp5~4#1;stopRequestedAtCurrentFloor_~__cil_tmp4~2#1 := 2 * ~maximumWeight~0;stopRequestedAtCurrentFloor_~__cil_tmp5~4#1 := (if stopRequestedAtCurrentFloor_~__cil_tmp4~2#1 < 0 && 0 != stopRequestedAtCurrentFloor_~__cil_tmp4~2#1 % 3 then 1 + stopRequestedAtCurrentFloor_~__cil_tmp4~2#1 / 3 else stopRequestedAtCurrentFloor_~__cil_tmp4~2#1 / 3); 883213#L1367-1 assume ~weight~0 > stopRequestedAtCurrentFloor_~__cil_tmp5~4#1;assume { :begin_inline_getCurrentFloorID } true;havoc getCurrentFloorID_#res#1;havoc getCurrentFloorID_~retValue_acc~4#1;havoc getCurrentFloorID_~retValue_acc~4#1;getCurrentFloorID_~retValue_acc~4#1 := ~currentFloorID~0;getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~4#1; 883214#L686-1 stopRequestedAtCurrentFloor_#t~ret53#1 := getCurrentFloorID_#res#1;assume { :end_inline_getCurrentFloorID } true;stopRequestedAtCurrentFloor_~tmp~11#1 := stopRequestedAtCurrentFloor_#t~ret53#1;havoc stopRequestedAtCurrentFloor_#t~ret53#1;assume { :begin_inline_buttonForFloorIsPressed } true;buttonForFloorIsPressed_#in~floorID#1 := stopRequestedAtCurrentFloor_~tmp~11#1;havoc buttonForFloorIsPressed_#res#1;havoc buttonForFloorIsPressed_~floorID#1, buttonForFloorIsPressed_~retValue_acc~6#1;buttonForFloorIsPressed_~floorID#1 := buttonForFloorIsPressed_#in~floorID#1;havoc buttonForFloorIsPressed_~retValue_acc~6#1; 889109#L703-2 assume 0 == buttonForFloorIsPressed_~floorID#1;buttonForFloorIsPressed_~retValue_acc~6#1 := ~floorButtons_0~0;buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~6#1; 873360#L724-2 stopRequestedAtCurrentFloor_#t~ret54#1 := buttonForFloorIsPressed_#res#1;assume { :end_inline_buttonForFloorIsPressed } true;stopRequestedAtCurrentFloor_~tmp___0~3#1 := stopRequestedAtCurrentFloor_#t~ret54#1;havoc stopRequestedAtCurrentFloor_#t~ret54#1;stopRequestedAtCurrentFloor_~retValue_acc~15#1 := (if 1 == stopRequestedAtCurrentFloor_~tmp___0~3#1 then 1 else 0);stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~15#1; 884677#L1378-1 timeShift__wrappee__twothirdsfull_#t~ret68#1 := stopRequestedAtCurrentFloor_#res#1;assume { :end_inline_stopRequestedAtCurrentFloor } true;timeShift__wrappee__twothirdsfull_~tmp___9~2#1 := timeShift__wrappee__twothirdsfull_#t~ret68#1;havoc timeShift__wrappee__twothirdsfull_#t~ret68#1; 878053#L1514-2 assume !(0 != timeShift__wrappee__twothirdsfull_~tmp___9~2#1); 878054#L1605-3 assume !(1 == ~doorState~0); 879916#L1605-5 assume { :begin_inline_stopRequestedInDirection } true;stopRequestedInDirection_#in~dir#1, stopRequestedInDirection_#in~respectFloorCalls#1, stopRequestedInDirection_#in~respectInLiftCalls#1 := ~currentHeading~0, 1, 1;havoc stopRequestedInDirection_#res#1;havoc stopRequestedInDirection_#t~ret46#1, stopRequestedInDirection_#t~ret47#1, stopRequestedInDirection_#t~ret48#1, stopRequestedInDirection_#t~ret49#1, stopRequestedInDirection_~dir#1, stopRequestedInDirection_~respectFloorCalls#1, stopRequestedInDirection_~respectInLiftCalls#1, stopRequestedInDirection_~retValue_acc~12#1, stopRequestedInDirection_~overload~0#1, stopRequestedInDirection_~buttonPressed~0#1, stopRequestedInDirection_~tmp~8#1, stopRequestedInDirection_~__cil_tmp8~5#1, stopRequestedInDirection_~__cil_tmp9~5#1;stopRequestedInDirection_~dir#1 := stopRequestedInDirection_#in~dir#1;stopRequestedInDirection_~respectFloorCalls#1 := stopRequestedInDirection_#in~respectFloorCalls#1;stopRequestedInDirection_~respectInLiftCalls#1 := stopRequestedInDirection_#in~respectInLiftCalls#1;havoc stopRequestedInDirection_~retValue_acc~12#1;havoc stopRequestedInDirection_~overload~0#1;havoc stopRequestedInDirection_~buttonPressed~0#1;havoc stopRequestedInDirection_~tmp~8#1;havoc stopRequestedInDirection_~__cil_tmp8~5#1;havoc stopRequestedInDirection_~__cil_tmp9~5#1;stopRequestedInDirection_~__cil_tmp8~5#1 := 2 * ~maximumWeight~0;stopRequestedInDirection_~__cil_tmp9~5#1 := (if stopRequestedInDirection_~__cil_tmp8~5#1 < 0 && 0 != stopRequestedInDirection_~__cil_tmp8~5#1 % 3 then 1 + stopRequestedInDirection_~__cil_tmp8~5#1 / 3 else stopRequestedInDirection_~__cil_tmp8~5#1 / 3);stopRequestedInDirection_~overload~0#1 := (if ~weight~0 > stopRequestedInDirection_~__cil_tmp9~5#1 then 1 else 0);assume { :begin_inline_isAnyLiftButtonPressed } true;havoc isAnyLiftButtonPressed_#res#1;havoc isAnyLiftButtonPressed_~retValue_acc~13#1;havoc isAnyLiftButtonPressed_~retValue_acc~13#1; 883260#L1270-2 assume 0 != ~floorButtons_0~0;isAnyLiftButtonPressed_~retValue_acc~13#1 := 1;isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~13#1; 876426#L1291-2 stopRequestedInDirection_#t~ret46#1 := isAnyLiftButtonPressed_#res#1;assume { :end_inline_isAnyLiftButtonPressed } true;stopRequestedInDirection_~tmp~8#1 := stopRequestedInDirection_#t~ret46#1;havoc stopRequestedInDirection_#t~ret46#1;stopRequestedInDirection_~buttonPressed~0#1 := stopRequestedInDirection_~tmp~8#1; 889579#L1243-2 assume !(0 != stopRequestedInDirection_~overload~0#1);assume { :begin_inline_stopRequestedInDirection__wrappee__weight } true;stopRequestedInDirection__wrappee__weight_#in~dir#1, stopRequestedInDirection__wrappee__weight_#in~respectFloorCalls#1, stopRequestedInDirection__wrappee__weight_#in~respectInLiftCalls#1 := stopRequestedInDirection_~dir#1, stopRequestedInDirection_~respectFloorCalls#1, stopRequestedInDirection_~respectInLiftCalls#1;havoc stopRequestedInDirection__wrappee__weight_#res#1;havoc stopRequestedInDirection__wrappee__weight_#t~ret35#1, stopRequestedInDirection__wrappee__weight_#t~ret36#1, stopRequestedInDirection__wrappee__weight_#t~ret37#1, stopRequestedInDirection__wrappee__weight_#t~ret38#1, stopRequestedInDirection__wrappee__weight_#t~ret39#1, stopRequestedInDirection__wrappee__weight_#t~ret40#1, stopRequestedInDirection__wrappee__weight_#t~ret41#1, stopRequestedInDirection__wrappee__weight_#t~ret42#1, stopRequestedInDirection__wrappee__weight_#t~ret43#1, stopRequestedInDirection__wrappee__weight_#t~ret44#1, stopRequestedInDirection__wrappee__weight_#t~ret45#1, stopRequestedInDirection__wrappee__weight_~dir#1, stopRequestedInDirection__wrappee__weight_~respectFloorCalls#1, stopRequestedInDirection__wrappee__weight_~respectInLiftCalls#1, stopRequestedInDirection__wrappee__weight_~retValue_acc~11#1, stopRequestedInDirection__wrappee__weight_~tmp~7#1, stopRequestedInDirection__wrappee__weight_~tmp___0~1#1, stopRequestedInDirection__wrappee__weight_~tmp___1~1#1, stopRequestedInDirection__wrappee__weight_~tmp___2~1#1, stopRequestedInDirection__wrappee__weight_~tmp___3~1#1, stopRequestedInDirection__wrappee__weight_~tmp___4~0#1, stopRequestedInDirection__wrappee__weight_~tmp___5~0#1, stopRequestedInDirection__wrappee__weight_~tmp___6~0#1, stopRequestedInDirection__wrappee__weight_~tmp___7~0#1, stopRequestedInDirection__wrappee__weight_~tmp___8~0#1, stopRequestedInDirection__wrappee__weight_~tmp___9~0#1;stopRequestedInDirection__wrappee__weight_~dir#1 := stopRequestedInDirection__wrappee__weight_#in~dir#1;stopRequestedInDirection__wrappee__weight_~respectFloorCalls#1 := stopRequestedInDirection__wrappee__weight_#in~respectFloorCalls#1;stopRequestedInDirection__wrappee__weight_~respectInLiftCalls#1 := stopRequestedInDirection__wrappee__weight_#in~respectInLiftCalls#1;havoc stopRequestedInDirection__wrappee__weight_~retValue_acc~11#1;havoc stopRequestedInDirection__wrappee__weight_~tmp~7#1;havoc stopRequestedInDirection__wrappee__weight_~tmp___0~1#1;havoc stopRequestedInDirection__wrappee__weight_~tmp___1~1#1;havoc stopRequestedInDirection__wrappee__weight_~tmp___2~1#1;havoc stopRequestedInDirection__wrappee__weight_~tmp___3~1#1;havoc stopRequestedInDirection__wrappee__weight_~tmp___4~0#1;havoc stopRequestedInDirection__wrappee__weight_~tmp___5~0#1;havoc stopRequestedInDirection__wrappee__weight_~tmp___6~0#1;havoc stopRequestedInDirection__wrappee__weight_~tmp___7~0#1;havoc stopRequestedInDirection__wrappee__weight_~tmp___8~0#1;havoc stopRequestedInDirection__wrappee__weight_~tmp___9~0#1; 877681#L890-8 assume !(1 == stopRequestedInDirection__wrappee__weight_~dir#1); 877682#L1059-8 assume 0 == ~currentFloorID~0;stopRequestedInDirection__wrappee__weight_~retValue_acc~11#1 := 0;stopRequestedInDirection__wrappee__weight_#res#1 := stopRequestedInDirection__wrappee__weight_~retValue_acc~11#1; 874209#L1212-8 stopRequestedInDirection_#t~ret49#1 := stopRequestedInDirection__wrappee__weight_#res#1;assume { :end_inline_stopRequestedInDirection__wrappee__weight } true;stopRequestedInDirection_~retValue_acc~12#1 := stopRequestedInDirection_#t~ret49#1;havoc stopRequestedInDirection_#t~ret49#1;stopRequestedInDirection_#res#1 := stopRequestedInDirection_~retValue_acc~12#1; 874210#L1261-2 timeShift__wrappee__twothirdsfull_#t~ret75#1 := stopRequestedInDirection_#res#1;assume { :end_inline_stopRequestedInDirection } true;timeShift__wrappee__twothirdsfull_~tmp___8~2#1 := timeShift__wrappee__twothirdsfull_#t~ret75#1;havoc timeShift__wrappee__twothirdsfull_#t~ret75#1; 884001#L1613-2 assume 0 != timeShift__wrappee__twothirdsfull_~tmp___8~2#1;assume { :begin_inline_continueInDirection } true;continueInDirection_#in~dir#1 := ~currentHeading~0;havoc continueInDirection_#t~ret50#1, continueInDirection_~dir#1, continueInDirection_~tmp~9#1;continueInDirection_~dir#1 := continueInDirection_#in~dir#1;havoc continueInDirection_~tmp~9#1;~currentHeading~0 := continueInDirection_~dir#1; 882560#L1305-3 assume !(1 == ~currentHeading~0); 882562#L1315-9 assume 0 == ~currentFloorID~0;~currentHeading~0 := 1; 874120#L1315-11 assume !(1 == ~currentHeading~0);~currentFloorID~0 := ~currentFloorID~0 - 1; 887083#L1321-7 assume { :end_inline_continueInDirection } true; 874176#L1622-5 assume { :end_inline_timeShift__wrappee__twothirdsfull } true; 889441#L1647-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret130#1, __utac_acc__Specification13_spec__2_#t~ret131#1, __utac_acc__Specification13_spec__2_#t~ret132#1, __utac_acc__Specification13_spec__2_#t~ret133#1, __utac_acc__Specification13_spec__2_#t~ret134#1, __utac_acc__Specification13_spec__2_#t~ret135#1, __utac_acc__Specification13_spec__2_~tmp~28#1, __utac_acc__Specification13_spec__2_~tmp___0~11#1, __utac_acc__Specification13_spec__2_~tmp___1~8#1, __utac_acc__Specification13_spec__2_~tmp___2~6#1, __utac_acc__Specification13_spec__2_~tmp___3~5#1, __utac_acc__Specification13_spec__2_~tmp___4~3#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;havoc __utac_acc__Specification13_spec__2_~tmp~28#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~11#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~8#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~6#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~5#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~3#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~7#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~6#1 / 3); 890794#L3305 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~7#1; 891000#L3306 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~17#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~17#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 891009#L1867 assume !(1 == existInLiftCallsInDirection_~d#1); 892030#L1933 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 892031#L1937-2 [2021-11-20 06:31:31,653 INFO L793 eck$LassoCheckResult]: Loop: 892031#L1937-2 assume !false; 892028#L1938 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 892029#L1939 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 892036#L1946-2 assume !false; 892035#L1947 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 892033#L2005 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 892031#L1937-2 [2021-11-20 06:31:31,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:31,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1502347685, now seen corresponding path program 1 times [2021-11-20 06:31:31,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:31,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957206718] [2021-11-20 06:31:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:31,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:31,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:31,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957206718] [2021-11-20 06:31:31,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957206718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:31,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:31,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:31:31,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668092616] [2021-11-20 06:31:31,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:31,730 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:31:31,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash 763776811, now seen corresponding path program 11 times [2021-11-20 06:31:31,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:31,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142230492] [2021-11-20 06:31:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:31,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:31,734 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:31:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:31:31,739 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:31:31,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:31,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:31:31,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:31:31,763 INFO L87 Difference]: Start difference. First operand 27846 states and 52202 transitions. cyclomatic complexity: 24424 Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:31:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:32,843 INFO L93 Difference]: Finished difference Result 47140 states and 86966 transitions. [2021-11-20 06:31:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:31:32,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47140 states and 86966 transitions.