./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G --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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:39:54,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:39:54,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:39:54,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:39:54,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:39:54,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:39:54,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:39:54,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:39:54,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:39:54,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:39:54,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:39:54,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:39:54,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:39:54,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:39:54,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:39:54,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:39:54,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:39:54,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:39:54,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:39:55,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:39:55,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:39:55,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:39:55,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:39:55,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:39:55,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:39:55,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:39:55,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:39:55,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:39:55,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:39:55,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:39:55,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:39:55,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:39:55,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:39:55,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:39:55,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:39:55,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:39:55,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:39:55,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:39:55,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:39:55,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:39:55,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:39:55,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-23 13:39:55,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:39:55,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:39:55,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:39:55,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:39:55,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:39:55,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:39:55,093 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:39:55,093 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 13:39:55,094 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 13:39:55,094 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 13:39:55,095 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 13:39:55,095 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 13:39:55,095 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 13:39:55,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:39:55,096 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:39:55,096 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:39:55,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:39:55,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:39:55,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:39:55,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 13:39:55,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 13:39:55,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 13:39:55,098 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:39:55,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:39:55,098 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 13:39:55,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:39:55,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 13:39:55,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:39:55,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:39:55,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:39:55,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:39:55,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:39:55,101 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 13:39:55,102 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_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2021-11-23 13:39:55,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:39:55,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:39:55,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:39:55,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:39:55,419 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:39:55,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-23 13:39:55,492 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/data/2eb7a5fcc/309cf5a477494ddd80e021baf901d15f/FLAG1f7301ec9 [2021-11-23 13:39:56,249 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:39:56,250 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-23 13:39:56,273 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/data/2eb7a5fcc/309cf5a477494ddd80e021baf901d15f/FLAG1f7301ec9 [2021-11-23 13:39:56,442 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/data/2eb7a5fcc/309cf5a477494ddd80e021baf901d15f [2021-11-23 13:39:56,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:39:56,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:39:56,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:39:56,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:39:56,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:39:56,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:56" (1/1) ... [2021-11-23 13:39:56,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d19b503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:56, skipping insertion in model container [2021-11-23 13:39:56,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:56" (1/1) ... [2021-11-23 13:39:56,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:39:56,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:39:57,098 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_1c61734d-3b0e-486f-936f-82dbcc6e0f84/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-23 13:39:57,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:39:57,197 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:39:57,342 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_1c61734d-3b0e-486f-936f-82dbcc6e0f84/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-23 13:39:57,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:39:57,407 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:39:57,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57 WrapperNode [2021-11-23 13:39:57,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:39:57,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:39:57,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:39:57,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:39:57,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (1/1) ... [2021-11-23 13:39:57,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (1/1) ... [2021-11-23 13:39:58,494 INFO L137 Inliner]: procedures = 96, calls = 352, calls flagged for inlining = 204, calls inlined = 1935, statements flattened = 67284 [2021-11-23 13:39:58,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:39:58,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:39:58,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:39:58,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:39:58,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (1/1) ... [2021-11-23 13:39:58,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (1/1) ... [2021-11-23 13:39:58,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (1/1) ... [2021-11-23 13:39:58,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (1/1) ... [2021-11-23 13:39:59,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (1/1) ... [2021-11-23 13:39:59,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (1/1) ... [2021-11-23 13:39:59,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (1/1) ... [2021-11-23 13:40:00,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:40:00,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:40:00,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:40:00,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:40:00,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (1/1) ... [2021-11-23 13:40:00,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:00,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:00,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:00,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 13:40:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:40:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:40:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:40:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:40:00,919 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:40:00,920 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:40:21,824 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:40:21,946 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:40:21,946 INFO L301 CfgBuilder]: Removed 61 assume(true) statements. [2021-11-23 13:40:21,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:21 BoogieIcfgContainer [2021-11-23 13:40:21,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:40:21,969 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 13:40:21,969 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 13:40:21,973 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 13:40:21,974 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:40:21,974 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:39:56" (1/3) ... [2021-11-23 13:40:21,975 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1162f6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:40:21, skipping insertion in model container [2021-11-23 13:40:21,975 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:40:21,976 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:57" (2/3) ... [2021-11-23 13:40:21,976 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1162f6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:40:21, skipping insertion in model container [2021-11-23 13:40:21,976 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:40:21,976 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:21" (3/3) ... [2021-11-23 13:40:21,978 INFO L388 chiAutomizerObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2021-11-23 13:40:22,028 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 13:40:22,028 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 13:40:22,029 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 13:40:22,029 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 13:40:22,029 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 13:40:22,029 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 13:40:22,030 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 13:40:22,030 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 13:40:22,414 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17942 states, 17941 states have (on average 1.8775430578005685) internal successors, (33685), 17941 states have internal predecessors, (33685), 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) [2021-11-23 13:40:22,909 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4074 [2021-11-23 13:40:22,909 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:40:22,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:40:22,927 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] [2021-11-23 13:40:22,927 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:22,927 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 13:40:22,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17942 states, 17941 states have (on average 1.8775430578005685) internal successors, (33685), 17941 states have internal predecessors, (33685), 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) [2021-11-23 13:40:23,280 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4074 [2021-11-23 13:40:23,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:40:23,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:40:23,284 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] [2021-11-23 13:40:23,285 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:23,302 INFO L791 eck$LassoCheckResult]: Stem: 7238#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;~executiveFloor~0 := 4;~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;~cleanupTimeShifts~0 := 12;~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;~prevDir~0 := 0; 4324#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret129#1, main_~retValue_acc~23#1, main_~tmp~27#1;havoc main_~retValue_acc~23#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 1353#L3440true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 15646#L3433true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~31#1;havoc valid_product_~retValue_acc~31#1;valid_product_~retValue_acc~31#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~31#1; 2934#L3448true main_#t~ret129#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret129#1;havoc main_#t~ret129#1; 17086#L2436true assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 15768#L2410true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret118#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~28#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~28#1; 10919#L3343true assume 0 == getOrigin_~person#1;getOrigin_~retValue_acc~28#1 := 4;getOrigin_#res#1 := getOrigin_~retValue_acc~28#1; 1369#L3368true aliceCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret118#1;havoc aliceCall_#t~ret118#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; 10918#L2903true assume 0 == initPersonOnFloor_~floor#1; 5058#L2904true assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 12178#L3011-1true assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 4415#L2695true assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 8113#L2707-2true assume { :end_inline_callOnFloor } true; 17776#L3047true assume { :end_inline_initPersonOnFloor } true; 14484#L2171true assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret119#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~28#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~28#1; 17527#L3343-1true assume 0 == getOrigin_~person#1;getOrigin_~retValue_acc~28#1 := 4;getOrigin_#res#1 := getOrigin_~retValue_acc~28#1; 4159#L3368-1true angelinaCall_#t~ret119#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret119#1;havoc angelinaCall_#t~ret119#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; 4641#L2903-1true assume 0 == initPersonOnFloor_~floor#1; 1140#L2904-2true assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 2972#L3011-3true assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 11532#L2695-2true assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 17871#L2707-5true assume { :end_inline_callOnFloor } true; 16446#L3047-1true assume { :end_inline_initPersonOnFloor } true; 628#L2182true assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret86#1, timeShift_~tmp~16#1;havoc timeShift_~tmp~16#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret136#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; 6849#L732true __utac_acc__Specification13_spec__1_#t~ret136#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret136#1;havoc __utac_acc__Specification13_spec__1_#t~ret136#1; 4971#L3219true 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; 10797#L689true timeShift_#t~ret86#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~16#1 := timeShift_#t~ret86#1;havoc timeShift_#t~ret86#1; 17004#L1702true assume 0 != timeShift_~tmp~16#1; 8540#L1703true assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 3722#L1702-1true assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret137#1, __utac_acc__Specification13_spec__2_#t~ret138#1, __utac_acc__Specification13_spec__2_#t~ret139#1, __utac_acc__Specification13_spec__2_#t~ret140#1, __utac_acc__Specification13_spec__2_#t~ret141#1, __utac_acc__Specification13_spec__2_#t~ret142#1, __utac_acc__Specification13_spec__2_~tmp~30#1, __utac_acc__Specification13_spec__2_~tmp___0~13#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_tmp7~7#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~8#1;havoc __utac_acc__Specification13_spec__2_~tmp~30#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~13#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_tmp7~7#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~8#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~7#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~8#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~7#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~7#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~7#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~7#1 / 3); 1561#L3236true assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~8#1; 7772#L3237true 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~19#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~19#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 17341#L1922true assume 1 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i~0#1 := 0;existInLiftCallsInDirection_~i~0#1 := 1 + ~currentFloorID~0; 13685#L1926-2true [2021-11-23 13:40:23,302 INFO L793 eck$LassoCheckResult]: Loop: 13685#L1926-2true assume !false; 17208#L1927true assume existInLiftCallsInDirection_~i~0#1 < 5; 17553#L1928true assume !(0 == existInLiftCallsInDirection_~i~0#1); 6172#L1941true assume !(1 == existInLiftCallsInDirection_~i~0#1); 17378#L1950true assume !(2 == existInLiftCallsInDirection_~i~0#1); 11303#L1959true assume !(3 == existInLiftCallsInDirection_~i~0#1); 55#L1968true assume !(4 == existInLiftCallsInDirection_~i~0#1); 13116#L1969-1true existInLiftCallsInDirection_~i~0#1 := 1 + existInLiftCallsInDirection_~i~0#1; 13685#L1926-2true [2021-11-23 13:40:23,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1530792437, now seen corresponding path program 1 times [2021-11-23 13:40:23,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:23,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179345019] [2021-11-23 13:40:23,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:23,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:23,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:23,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179345019] [2021-11-23 13:40:23,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179345019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:40:23,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:40:23,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:40:23,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048397087] [2021-11-23 13:40:23,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:40:23,789 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:40:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash 629105533, now seen corresponding path program 1 times [2021-11-23 13:40:23,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:23,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496009583] [2021-11-23 13:40:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:23,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:40:23,799 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:40:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:40:23,840 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:40:23,956 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:40:23,957 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:40:23,957 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:40:23,958 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:40:23,958 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:40:23,958 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:23,959 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:40:23,959 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:40:23,959 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product24.cil.c_Iteration1_Loop [2021-11-23 13:40:23,959 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:40:23,960 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:40:23,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:40:24,055 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:40:24,056 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:40:24,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:24,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:24,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:24,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-23 13:40:24,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:40:24,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:40:24,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:40:24,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:24,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:24,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:40:24,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:40:24,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-23 13:40:24,218 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:40:24,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:40:24,234 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:40:24,235 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:40:24,235 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:40:24,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:40:24,235 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:40:24,235 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:24,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:40:24,235 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:40:24,236 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product24.cil.c_Iteration1_Loop [2021-11-23 13:40:24,236 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:40:24,236 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:40:24,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:40:24,300 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:40:24,306 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:40:24,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:24,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:24,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:24,312 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 [2021-11-23 13:40:24,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:40:24,324 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:40:24,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:40:24,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:40:24,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:40:24,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:40:24,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:40:24,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-23 13:40:24,349 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:40:24,356 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:40:24,356 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:40:24,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:24,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:24,360 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:24,368 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:40:24,368 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:40:24,369 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:40:24,369 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 [] [2021-11-23 13:40:24,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-23 13:40:24,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:40:24,408 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:40:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:24,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:40:24,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:40:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:24,633 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:40:24,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:40:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:24,892 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 [2021-11-23 13:40:24,933 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17942 states, 17941 states have (on average 1.8775430578005685) internal successors, (33685), 17941 states have internal predecessors, (33685), 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) [2021-11-23 13:40:27,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-11-23 13:40:37,225 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17942 states, 17941 states have (on average 1.8775430578005685) internal successors, (33685), 17941 states have internal predecessors, (33685), 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 211168 states and 396305 transitions. Complement of second has 18 states. [2021-11-23 13:40:37,226 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 [2021-11-23 13:40:37,232 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) [2021-11-23 13:40:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215003 transitions. [2021-11-23 13:40:37,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 215003 transitions. Stem has 34 letters. Loop has 8 letters. [2021-11-23 13:40:37,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:40:37,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 215003 transitions. Stem has 42 letters. Loop has 8 letters. [2021-11-23 13:40:37,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:40:37,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 215003 transitions. Stem has 34 letters. Loop has 16 letters. [2021-11-23 13:40:37,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:40:37,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 211168 states and 396305 transitions. [2021-11-23 13:40:39,943 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 28744 [2021-11-23 13:40:41,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 211168 states to 114441 states and 214726 transitions. [2021-11-23 13:40:41,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 114411 [2021-11-23 13:40:41,537 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 114412 [2021-11-23 13:40:41,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114441 states and 214726 transitions. [2021-11-23 13:40:41,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:40:41,540 INFO L681 BuchiCegarLoop]: Abstraction has 114441 states and 214726 transitions. [2021-11-23 13:40:41,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114441 states and 214726 transitions. [2021-11-23 13:40:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114441 to 32264. [2021-11-23 13:40:43,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32264 states, 32264 states have (on average 1.8736982395239277) internal successors, (60453), 32263 states have internal predecessors, (60453), 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) [2021-11-23 13:40:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32264 states to 32264 states and 60453 transitions. [2021-11-23 13:40:43,152 INFO L704 BuchiCegarLoop]: Abstraction has 32264 states and 60453 transitions. [2021-11-23 13:40:43,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:40:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:40:43,161 INFO L87 Difference]: Start difference. First operand 32264 states and 60453 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) [2021-11-23 13:40:44,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:40:44,849 INFO L93 Difference]: Finished difference Result 46611 states and 87185 transitions. [2021-11-23 13:40:44,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:40:44,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46611 states and 87185 transitions. [2021-11-23 13:40:45,110 INFO L131 ngComponentsAnalysis]: Automaton has 78 accepting balls. 15474 [2021-11-23 13:40:45,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46611 states to 46598 states and 87172 transitions. [2021-11-23 13:40:45,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46579 [2021-11-23 13:40:45,425 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46579 [2021-11-23 13:40:45,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46598 states and 87172 transitions. [2021-11-23 13:40:45,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:40:45,512 INFO L681 BuchiCegarLoop]: Abstraction has 46598 states and 87172 transitions. [2021-11-23 13:40:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46598 states and 87172 transitions. [2021-11-23 13:40:46,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46598 to 17939. [2021-11-23 13:40:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17939 states, 17939 states have (on average 1.8707285801884164) internal successors, (33559), 17938 states have internal predecessors, (33559), 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) [2021-11-23 13:40:46,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17939 states to 17939 states and 33559 transitions. [2021-11-23 13:40:46,510 INFO L704 BuchiCegarLoop]: Abstraction has 17939 states and 33559 transitions. [2021-11-23 13:40:46,510 INFO L587 BuchiCegarLoop]: Abstraction has 17939 states and 33559 transitions. [2021-11-23 13:40:46,510 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-23 13:40:46,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17939 states and 33559 transitions. [2021-11-23 13:40:46,583 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4074 [2021-11-23 13:40:46,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:40:46,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:40:46,587 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] [2021-11-23 13:40:46,587 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:46,588 INFO L791 eck$LassoCheckResult]: Stem: 320597#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;~executiveFloor~0 := 4;~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;~cleanupTimeShifts~0 := 12;~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;~prevDir~0 := 0; 316682#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret129#1, main_~retValue_acc~23#1, main_~tmp~27#1;havoc main_~retValue_acc~23#1;havoc main_~tmp~27#1;assume { :begin_inline_select_helpers } true; 311374#L3440 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 311375#L3433 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~31#1;havoc valid_product_~retValue_acc~31#1;valid_product_~retValue_acc~31#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~31#1; 314382#L3448 main_#t~ret129#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~27#1 := main_#t~ret129#1;havoc main_#t~ret129#1; 314383#L2436 assume 0 != main_~tmp~27#1;assume { :begin_inline_setup } true; 325876#L2410 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret118#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~28#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~28#1; 323749#L3343 assume !(0 == getOrigin_~person#1); 323750#L3347 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~28#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~28#1; 311410#L3368 aliceCall_#t~ret118#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~20#1 := aliceCall_#t~ret118#1;havoc aliceCall_#t~ret118#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; 311411#L2903 assume 0 == initPersonOnFloor_~floor#1; 317731#L2904 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 310920#L3011-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 316810#L2695 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 315734#L2707-2 assume { :end_inline_callOnFloor } true; 321517#L3047 assume { :end_inline_initPersonOnFloor } true; 325559#L2171 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret119#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~28#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~28#1; 325560#L3343-1 assume !(0 == getOrigin_~person#1); 326087#L3347-1 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~28#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~28#1; 311052#L3368-1 angelinaCall_#t~ret119#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~21#1 := angelinaCall_#t~ret119#1;havoc angelinaCall_#t~ret119#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; 316438#L2903-1 assume 0 == initPersonOnFloor_~floor#1; 310923#L2904-2 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 308202#L3011-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 314447#L2695-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 322051#L2707-5 assume { :end_inline_callOnFloor } true; 325984#L3047-1 assume { :end_inline_initPersonOnFloor } true; 309737#L2182 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret86#1, timeShift_~tmp~16#1;havoc timeShift_~tmp~16#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret136#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; 309738#L732 __utac_acc__Specification13_spec__1_#t~ret136#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret136#1;havoc __utac_acc__Specification13_spec__1_#t~ret136#1; 317615#L3219 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; 317616#L689 timeShift_#t~ret86#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~16#1 := timeShift_#t~ret86#1;havoc timeShift_#t~ret86#1; 323662#L1702 assume 0 != timeShift_~tmp~16#1; 321893#L1703 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 313285#L1702-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret137#1, __utac_acc__Specification13_spec__2_#t~ret138#1, __utac_acc__Specification13_spec__2_#t~ret139#1, __utac_acc__Specification13_spec__2_#t~ret140#1, __utac_acc__Specification13_spec__2_#t~ret141#1, __utac_acc__Specification13_spec__2_#t~ret142#1, __utac_acc__Specification13_spec__2_~tmp~30#1, __utac_acc__Specification13_spec__2_~tmp___0~13#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_tmp7~7#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~8#1;havoc __utac_acc__Specification13_spec__2_~tmp~30#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~13#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_tmp7~7#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~8#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~7#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~8#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~7#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~7#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~7#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~7#1 / 3); 311806#L3236 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~8#1; 311807#L3237 assume !(1 == ~prevDir~0); 310688#L3263 assume 0 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 1;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~19#1, existInLiftCallsInDirection_~i~0#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~19#1;havoc existInLiftCallsInDirection_~i~0#1;havoc existInLiftCallsInDirection_~i___0~0#1; 310690#L1922-2 assume 1 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i~0#1 := 0;existInLiftCallsInDirection_~i~0#1 := 1 + ~currentFloorID~0; 322309#L1926-8 [2021-11-23 13:40:46,588 INFO L793 eck$LassoCheckResult]: Loop: 322309#L1926-8 assume !false; 323317#L1927-2 assume existInLiftCallsInDirection_~i~0#1 < 5; 310056#L1928-2 assume !(0 == existInLiftCallsInDirection_~i~0#1); 310058#L1941-2 assume !(1 == existInLiftCallsInDirection_~i~0#1); 320562#L1950-2 assume !(2 == existInLiftCallsInDirection_~i~0#1); 320564#L1959-2 assume !(3 == existInLiftCallsInDirection_~i~0#1); 319255#L1968-2 assume !(4 == existInLiftCallsInDirection_~i~0#1); 318012#L1969-5 existInLiftCallsInDirection_~i~0#1 := 1 + existInLiftCallsInDirection_~i~0#1; 322309#L1926-8 [2021-11-23 13:40:46,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:46,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1862527440, now seen corresponding path program 1 times [2021-11-23 13:40:46,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:46,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791914393] [2021-11-23 13:40:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:46,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:46,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:46,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791914393] [2021-11-23 13:40:46,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791914393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:40:46,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:40:46,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:40:46,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781465192] [2021-11-23 13:40:46,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:40:46,687 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:40:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1588622723, now seen corresponding path program 1 times [2021-11-23 13:40:46,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:46,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508642727] [2021-11-23 13:40:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:46,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:40:46,694 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:40:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:40:46,704 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:40:46,744 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:40:46,745 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:40:46,745 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:40:46,745 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:40:46,745 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:40:46,745 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:46,745 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:40:46,746 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:40:46,746 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product24.cil.c_Iteration2_Loop [2021-11-23 13:40:46,746 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:40:46,746 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:40:46,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:40:46,807 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:40:46,807 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:40:46,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:46,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:46,809 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:46,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:40:46,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:40:46,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-23 13:40:46,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:40:46,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:46,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:46,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:46,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-23 13:40:46,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:40:46,882 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:40:46,946 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:40:46,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:40:46,955 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:40:46,955 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:40:46,955 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:40:46,955 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:40:46,955 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:40:46,955 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:46,955 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:40:46,955 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:40:46,955 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product24.cil.c_Iteration2_Loop [2021-11-23 13:40:46,955 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:40:46,956 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:40:46,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:40:47,019 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:40:47,019 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:40:47,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:47,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:47,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:47,027 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 [2021-11-23 13:40:47,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:40:47,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:40:47,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:40:47,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:40:47,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:40:47,038 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:40:47,038 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:40:47,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-23 13:40:47,053 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:40:47,056 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-23 13:40:47,056 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-23 13:40:47,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:40:47,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:47,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:47,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-23 13:40:47,062 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:40:47,062 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:40:47,062 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:40:47,062 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 [] [2021-11-23 13:40:47,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:40:47,100 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:40:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:47,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:40:47,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:40:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:47,301 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:40:47,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:40:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:47,511 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 [2021-11-23 13:40:47,512 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17939 states and 33559 transitions. cyclomatic complexity: 15654 Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 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) [2021-11-23 13:40:48,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c61734d-3b0e-486f-936f-82dbcc6e0f84/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:40:56,637 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17939 states and 33559 transitions. cyclomatic complexity: 15654. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 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) Result 196607 states and 368829 transitions. Complement of second has 17 states. [2021-11-23 13:40:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-11-23 13:40:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 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) [2021-11-23 13:40:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187736 transitions. [2021-11-23 13:40:56,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 187736 transitions. Stem has 37 letters. Loop has 8 letters. [2021-11-23 13:40:56,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:40:56,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 187736 transitions. Stem has 45 letters. Loop has 8 letters. [2021-11-23 13:40:56,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:40:56,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 187736 transitions. Stem has 37 letters. Loop has 16 letters. [2021-11-23 13:40:56,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:40:56,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196607 states and 368829 transitions. [2021-11-23 13:40:57,967 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 28744 [2021-11-23 13:40:58,753 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196607 states to 114447 states and 214633 transitions. [2021-11-23 13:40:58,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 114398 [2021-11-23 13:40:58,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 114399 [2021-11-23 13:40:58,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114447 states and 214633 transitions. [2021-11-23 13:40:58,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:40:58,927 INFO L681 BuchiCegarLoop]: Abstraction has 114447 states and 214633 transitions. [2021-11-23 13:40:59,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114447 states and 214633 transitions. [2021-11-23 13:40:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114447 to 17963. [2021-11-23 13:40:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17963 states, 17963 states have (on average 1.8703445972276347) internal successors, (33597), 17962 states have internal predecessors, (33597), 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) [2021-11-23 13:40:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17963 states to 17963 states and 33597 transitions. [2021-11-23 13:40:59,764 INFO L704 BuchiCegarLoop]: Abstraction has 17963 states and 33597 transitions. [2021-11-23 13:40:59,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:59,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:40:59,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:40:59,766 INFO L87 Difference]: Start difference. First operand 17963 states and 33597 transitions. 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)