./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 18:42:31,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 18:42:31,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 18:42:31,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 18:42:31,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 18:42:31,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 18:42:31,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 18:42:31,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 18:42:31,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 18:42:31,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 18:42:31,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 18:42:31,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 18:42:31,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 18:42:31,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 18:42:31,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 18:42:31,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 18:42:31,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 18:42:31,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 18:42:31,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 18:42:31,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 18:42:31,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 18:42:31,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 18:42:31,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 18:42:31,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 18:42:31,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 18:42:31,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 18:42:31,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 18:42:31,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 18:42:31,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 18:42:31,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 18:42:31,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 18:42:31,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 18:42:31,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 18:42:31,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 18:42:31,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 18:42:31,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 18:42:31,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 18:42:31,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 18:42:31,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 18:42:31,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 18:42:31,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 18:42:31,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 18:42:31,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 18:42:31,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 18:42:31,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 18:42:31,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 18:42:31,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 18:42:31,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 18:42:31,663 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 18:42:31,663 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 18:42:31,663 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 18:42:31,663 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 18:42:31,664 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 18:42:31,664 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 18:42:31,664 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 18:42:31,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 18:42:31,665 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 18:42:31,665 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 18:42:31,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 18:42:31,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 18:42:31,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 18:42:31,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 18:42:31,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 18:42:31,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 18:42:31,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 18:42:31,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 18:42:31,666 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 18:42:31,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 18:42:31,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 18:42:31,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 18:42:31,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 18:42:31,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 18:42:31,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 18:42:31,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 18:42:31,668 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 18:42:31,668 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb [2021-12-19 18:42:31,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 18:42:31,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 18:42:31,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 18:42:31,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 18:42:31,900 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 18:42:31,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2021-12-19 18:42:31,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933dbf63c/e813b1154f0340b2b5f06a98acf59370/FLAGa041703e4 [2021-12-19 18:42:32,453 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 18:42:32,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2021-12-19 18:42:32,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933dbf63c/e813b1154f0340b2b5f06a98acf59370/FLAGa041703e4 [2021-12-19 18:42:32,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933dbf63c/e813b1154f0340b2b5f06a98acf59370 [2021-12-19 18:42:32,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 18:42:32,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 18:42:32,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 18:42:32,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 18:42:32,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 18:42:32,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:42:32" (1/1) ... [2021-12-19 18:42:32,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403175d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:32, skipping insertion in model container [2021-12-19 18:42:32,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:42:32" (1/1) ... [2021-12-19 18:42:32,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 18:42:33,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 18:42:33,149 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c[1546,1559] [2021-12-19 18:42:33,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 18:42:33,429 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 18:42:33,437 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c[1546,1559] [2021-12-19 18:42:33,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 18:42:33,560 INFO L208 MainTranslator]: Completed translation [2021-12-19 18:42:33,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33 WrapperNode [2021-12-19 18:42:33,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 18:42:33,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 18:42:33,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 18:42:33,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 18:42:33,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (1/1) ... [2021-12-19 18:42:33,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (1/1) ... [2021-12-19 18:42:34,281 INFO L137 Inliner]: procedures = 97, calls = 354, calls flagged for inlining = 206, calls inlined = 2055, statements flattened = 69864 [2021-12-19 18:42:34,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 18:42:34,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 18:42:34,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 18:42:34,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 18:42:34,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (1/1) ... [2021-12-19 18:42:34,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (1/1) ... [2021-12-19 18:42:34,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (1/1) ... [2021-12-19 18:42:34,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (1/1) ... [2021-12-19 18:42:34,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (1/1) ... [2021-12-19 18:42:35,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (1/1) ... [2021-12-19 18:42:35,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (1/1) ... [2021-12-19 18:42:35,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 18:42:35,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 18:42:35,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 18:42:35,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 18:42:35,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (1/1) ... [2021-12-19 18:42:35,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:42:35,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:42:35,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:42:35,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-19 18:42:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 18:42:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 18:42:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 18:42:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 18:42:35,765 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 18:42:35,770 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 18:42:48,415 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 18:42:48,622 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 18:42:48,623 INFO L301 CfgBuilder]: Removed 61 assume(true) statements. [2021-12-19 18:42:48,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:42:48 BoogieIcfgContainer [2021-12-19 18:42:48,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 18:42:48,640 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 18:42:48,640 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 18:42:48,642 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 18:42:48,643 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:42:48,643 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 06:42:32" (1/3) ... [2021-12-19 18:42:48,644 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@682ce171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 06:42:48, skipping insertion in model container [2021-12-19 18:42:48,644 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:42:48,644 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:42:33" (2/3) ... [2021-12-19 18:42:48,644 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@682ce171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 06:42:48, skipping insertion in model container [2021-12-19 18:42:48,644 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:42:48,645 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:42:48" (3/3) ... [2021-12-19 18:42:48,646 INFO L388 chiAutomizerObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2021-12-19 18:42:48,678 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 18:42:48,678 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 18:42:48,678 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 18:42:48,678 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 18:42:48,679 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 18:42:48,679 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 18:42:48,679 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 18:42:48,679 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 18:42:48,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18482 states, 18481 states have (on average 1.8746279963205454) internal successors, (34645), 18481 states have internal predecessors, (34645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:42:49,130 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4182 [2021-12-19 18:42:49,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:42:49,131 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:42:49,139 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] [2021-12-19 18:42:49,139 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:42:49,139 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 18:42:49,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18482 states, 18481 states have (on average 1.8746279963205454) internal successors, (34645), 18481 states have internal predecessors, (34645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:42:49,337 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4182 [2021-12-19 18:42:49,338 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:42:49,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:42:49,340 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] [2021-12-19 18:42:49,340 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:42:49,349 INFO L791 eck$LassoCheckResult]: Stem: 7529#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);~weight~0 := 0;~maximumWeight~0 := 100;~executiveFloor~0 := 4;~blocked~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~head~0.base, ~head~0.offset := 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; 4611#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret30#1, main_~retValue_acc~1#1, main_~tmp~11#1;havoc main_~retValue_acc~1#1;havoc main_~tmp~11#1;assume { :begin_inline_select_helpers } true; 3817#L1414true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 11721#L1407true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 2842#L1422true main_#t~ret30#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~11#1 := main_#t~ret30#1;havoc main_#t~ret30#1; 3985#L591true assume 0 != main_~tmp~11#1;assume { :begin_inline_setup } true; 14601#L564true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret19#1, aliceCall_~tmp~4#1;havoc aliceCall_~tmp~4#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~6#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~6#1; 6777#L1317true assume 0 == getOrigin_~person#1;getOrigin_~retValue_acc~6#1 := 4;getOrigin_#res#1 := getOrigin_~retValue_acc~6#1; 11788#L1342true aliceCall_#t~ret19#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~4#1 := aliceCall_#t~ret19#1;havoc aliceCall_#t~ret19#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~4#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 13494#L964true assume 0 == initPersonOnFloor_~floor#1; 17884#L965true assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 384#L1072-1true assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 13215#L756true assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 11192#L768-2true assume { :end_inline_callOnFloor } true; 11976#L1108true assume { :end_inline_initPersonOnFloor } true; 941#L324true assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret20#1, angelinaCall_~tmp~5#1;havoc angelinaCall_~tmp~5#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~6#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~6#1; 14638#L1317-1true assume 0 == getOrigin_~person#1;getOrigin_~retValue_acc~6#1 := 4;getOrigin_#res#1 := getOrigin_~retValue_acc~6#1; 17107#L1342-1true angelinaCall_#t~ret20#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~5#1 := angelinaCall_#t~ret20#1;havoc angelinaCall_#t~ret20#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~5#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 820#L964-1true assume 0 == initPersonOnFloor_~floor#1; 6159#L965-2true assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 5685#L1072-3true assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 10079#L756-2true assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 6978#L768-5true assume { :end_inline_callOnFloor } true; 5143#L1108-1true assume { :end_inline_initPersonOnFloor } true; 4458#L335true assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret115#1, timeShift_~tmp~29#1;havoc timeShift_~tmp~29#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret10#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~17#1;havoc getCurrentHeading_~retValue_acc~17#1;getCurrentHeading_~retValue_acc~17#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~17#1; 15889#L2092true __utac_acc__Specification13_spec__1_#t~ret10#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret10#1;havoc __utac_acc__Specification13_spec__1_#t~ret10#1; 4948#L170true assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~15#1;havoc areDoorsOpen_~retValue_acc~15#1;areDoorsOpen_~retValue_acc~15#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~15#1; 9012#L2049true timeShift_#t~ret115#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~29#1 := timeShift_#t~ret115#1;havoc timeShift_#t~ret115#1; 977#L3060true assume 0 != timeShift_~tmp~29#1; 9959#L3061true assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 9244#L3060-1true assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret11#1, __utac_acc__Specification13_spec__2_#t~ret12#1, __utac_acc__Specification13_spec__2_#t~ret13#1, __utac_acc__Specification13_spec__2_#t~ret14#1, __utac_acc__Specification13_spec__2_#t~ret15#1, __utac_acc__Specification13_spec__2_#t~ret16#1, __utac_acc__Specification13_spec__2_~tmp~2#1, __utac_acc__Specification13_spec__2_~tmp___0~2#1, __utac_acc__Specification13_spec__2_~tmp___1~2#1, __utac_acc__Specification13_spec__2_~tmp___2~0#1, __utac_acc__Specification13_spec__2_~tmp___3~0#1, __utac_acc__Specification13_spec__2_~tmp___4~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;havoc __utac_acc__Specification13_spec__2_~tmp~2#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~2#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~0#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3); 17948#L188true assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1; 7633#L189true 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~29#1, existInLiftCallsInDirection_~i~3#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~29#1;havoc existInLiftCallsInDirection_~i~3#1;havoc existInLiftCallsInDirection_~i___0~0#1; 2914#L3280true assume 1 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i~3#1 := 0;existInLiftCallsInDirection_~i~3#1 := 1 + ~currentFloorID~0; 15184#L3284-2true [2021-12-19 18:42:49,349 INFO L793 eck$LassoCheckResult]: Loop: 15184#L3284-2true assume !false; 3443#L3285true assume existInLiftCallsInDirection_~i~3#1 < 5; 5593#L3286true assume !(0 == existInLiftCallsInDirection_~i~3#1); 11228#L3299true assume !(1 == existInLiftCallsInDirection_~i~3#1); 11514#L3308true assume !(2 == existInLiftCallsInDirection_~i~3#1); 17188#L3317true assume !(3 == existInLiftCallsInDirection_~i~3#1); 15230#L3326true assume !(4 == existInLiftCallsInDirection_~i~3#1); 3542#L3327-1true existInLiftCallsInDirection_~i~3#1 := 1 + existInLiftCallsInDirection_~i~3#1; 15184#L3284-2true [2021-12-19 18:42:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:42:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1516016117, now seen corresponding path program 1 times [2021-12-19 18:42:49,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:42:49,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445887851] [2021-12-19 18:42:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:42:49,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:42:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:42:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:42:49,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 18:42:49,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445887851] [2021-12-19 18:42:49,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445887851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 18:42:49,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 18:42:49,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 18:42:49,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711205407] [2021-12-19 18:42:49,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 18:42:49,618 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 18:42:49,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:42:49,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1774605181, now seen corresponding path program 1 times [2021-12-19 18:42:49,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:42:49,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445078858] [2021-12-19 18:42:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:42:49,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:42:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:42:49,639 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:42:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:42:49,654 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:42:49,723 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:42:49,723 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:42:49,723 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:42:49,723 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:42:49,724 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 18:42:49,724 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:42:49,724 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:42:49,724 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:42:49,724 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product32.cil.c_Iteration1_Loop [2021-12-19 18:42:49,724 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:42:49,724 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:42:49,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:42:49,800 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:42:49,801 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 18:42:49,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:42:49,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:42:49,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:42:49,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-19 18:42:49,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:42:49,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:42:49,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-19 18:42:49,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:42:49,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:42:49,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:42:49,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-19 18:42:49,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 18:42:49,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:42:49,899 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 18:42:49,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-19 18:42:49,914 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:42:49,914 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:42:49,914 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:42:49,914 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:42:49,915 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 18:42:49,915 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:42:49,915 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:42:49,915 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:42:49,915 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product32.cil.c_Iteration1_Loop [2021-12-19 18:42:49,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:42:49,915 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:42:49,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:42:49,962 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:42:49,965 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 18:42:49,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:42:49,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:42:49,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:42:49,976 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:42:49,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:42:49,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:42:49,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:42:49,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:42:49,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:42:49,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:42:49,985 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:42:49,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-19 18:42:50,007 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 18:42:50,013 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 18:42:50,013 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 18:42:50,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:42:50,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:42:50,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:42:50,037 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 18:42:50,038 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 18:42:50,038 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 18:42:50,038 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_existInLiftCallsInDirection_~i~3#1) = -1*ULTIMATE.start_existInLiftCallsInDirection_~i~3#1 Supporting invariants [] [2021-12-19 18:42:50,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-19 18:42:50,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-19 18:42:50,086 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 18:42:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:42:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:42:50,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:42:50,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:42:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:42:50,278 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-19 18:42:50,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:42:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:42:50,412 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 [2021-12-19 18:42:50,439 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18482 states, 18481 states have (on average 1.8746279963205454) internal successors, (34645), 18481 states have internal predecessors, (34645), 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) [2021-12-19 18:42:51,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-19 18:42:58,047 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18482 states, 18481 states have (on average 1.8746279963205454) internal successors, (34645), 18481 states have internal predecessors, (34645), 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 217756 states and 408017 transitions. Complement of second has 18 states. [2021-12-19 18:42:58,048 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 [2021-12-19 18:42:58,052 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) [2021-12-19 18:42:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221339 transitions. [2021-12-19 18:42:58,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 221339 transitions. Stem has 34 letters. Loop has 8 letters. [2021-12-19 18:42:58,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:42:58,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 221339 transitions. Stem has 42 letters. Loop has 8 letters. [2021-12-19 18:42:58,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:42:58,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 221339 transitions. Stem has 34 letters. Loop has 16 letters. [2021-12-19 18:42:58,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:42:58,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 217756 states and 408017 transitions. [2021-12-19 18:42:59,792 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 29608 [2021-12-19 18:43:00,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 217756 states to 118005 states and 221062 transitions. [2021-12-19 18:43:00,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117975 [2021-12-19 18:43:00,752 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117976 [2021-12-19 18:43:00,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118005 states and 221062 transitions. [2021-12-19 18:43:00,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:43:00,755 INFO L681 BuchiCegarLoop]: Abstraction has 118005 states and 221062 transitions. [2021-12-19 18:43:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118005 states and 221062 transitions. [2021-12-19 18:43:01,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118005 to 33236. [2021-12-19 18:43:01,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33236 states, 33236 states have (on average 1.87089300758214) internal successors, (62181), 33235 states have internal predecessors, (62181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:43:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33236 states to 33236 states and 62181 transitions. [2021-12-19 18:43:02,252 INFO L704 BuchiCegarLoop]: Abstraction has 33236 states and 62181 transitions. [2021-12-19 18:43:02,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 18:43:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 18:43:02,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 18:43:02,285 INFO L87 Difference]: Start difference. First operand 33236 states and 62181 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) [2021-12-19 18:43:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 18:43:02,888 INFO L93 Difference]: Finished difference Result 48015 states and 89681 transitions. [2021-12-19 18:43:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 18:43:02,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48015 states and 89681 transitions. [2021-12-19 18:43:03,241 INFO L131 ngComponentsAnalysis]: Automaton has 78 accepting balls. 15906 [2021-12-19 18:43:03,385 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48015 states to 48002 states and 89668 transitions. [2021-12-19 18:43:03,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47983 [2021-12-19 18:43:03,429 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47983 [2021-12-19 18:43:03,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48002 states and 89668 transitions. [2021-12-19 18:43:03,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:43:03,430 INFO L681 BuchiCegarLoop]: Abstraction has 48002 states and 89668 transitions. [2021-12-19 18:43:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48002 states and 89668 transitions. [2021-12-19 18:43:03,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48002 to 18479. [2021-12-19 18:43:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18479 states, 18479 states have (on average 1.8680123383299962) internal successors, (34519), 18478 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:43:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18479 states to 18479 states and 34519 transitions. [2021-12-19 18:43:03,819 INFO L704 BuchiCegarLoop]: Abstraction has 18479 states and 34519 transitions. [2021-12-19 18:43:03,819 INFO L587 BuchiCegarLoop]: Abstraction has 18479 states and 34519 transitions. [2021-12-19 18:43:03,819 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 18:43:03,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18479 states and 34519 transitions. [2021-12-19 18:43:03,872 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4182 [2021-12-19 18:43:03,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:43:03,873 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:43:03,875 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] [2021-12-19 18:43:03,875 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:43:03,875 INFO L791 eck$LassoCheckResult]: Stem: 330483#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);~weight~0 := 0;~maximumWeight~0 := 100;~executiveFloor~0 := 4;~blocked~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~head~0.base, ~head~0.offset := 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; 326737#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret30#1, main_~retValue_acc~1#1, main_~tmp~11#1;havoc main_~retValue_acc~1#1;havoc main_~tmp~11#1;assume { :begin_inline_select_helpers } true; 325481#L1414 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 325482#L1407 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 323816#L1422 main_#t~ret30#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~11#1 := main_#t~ret30#1;havoc main_#t~ret30#1; 323817#L591 assume 0 != main_~tmp~11#1;assume { :begin_inline_setup } true; 325738#L564 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret19#1, aliceCall_~tmp~4#1;havoc aliceCall_~tmp~4#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~6#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~6#1; 329637#L1317 assume !(0 == getOrigin_~person#1); 329084#L1321 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~6#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~6#1; 326601#L1342 aliceCall_#t~ret19#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~4#1 := aliceCall_#t~ret19#1;havoc aliceCall_#t~ret19#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~4#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 334062#L964 assume 0 == initPersonOnFloor_~floor#1; 335052#L965 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 318688#L1072-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 318689#L756 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 319028#L768-2 assume { :end_inline_callOnFloor } true; 333682#L1108 assume { :end_inline_initPersonOnFloor } true; 320034#L324 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret20#1, angelinaCall_~tmp~5#1;havoc angelinaCall_~tmp~5#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~6#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~6#1; 320035#L1317-1 assume !(0 == getOrigin_~person#1); 329474#L1321-1 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~6#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~6#1; 327874#L1342-1 angelinaCall_#t~ret20#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~5#1 := angelinaCall_#t~ret20#1;havoc angelinaCall_#t~ret20#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~5#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 319754#L964-1 assume 0 == initPersonOnFloor_~floor#1; 319755#L965-2 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 317670#L1072-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 328238#L756-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 324861#L768-5 assume { :end_inline_callOnFloor } true; 327499#L1108-1 assume { :end_inline_initPersonOnFloor } true; 326470#L335 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret115#1, timeShift_~tmp~29#1;havoc timeShift_~tmp~29#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret10#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~17#1;havoc getCurrentHeading_~retValue_acc~17#1;getCurrentHeading_~retValue_acc~17#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~17#1; 326471#L2092 __utac_acc__Specification13_spec__1_#t~ret10#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret10#1;havoc __utac_acc__Specification13_spec__1_#t~ret10#1; 327216#L170 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~15#1;havoc areDoorsOpen_~retValue_acc~15#1;areDoorsOpen_~retValue_acc~15#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~15#1; 327217#L2049 timeShift_#t~ret115#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~29#1 := timeShift_#t~ret115#1;havoc timeShift_#t~ret115#1; 320114#L3060 assume 0 != timeShift_~tmp~29#1; 320116#L3061 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 332144#L3060-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret11#1, __utac_acc__Specification13_spec__2_#t~ret12#1, __utac_acc__Specification13_spec__2_#t~ret13#1, __utac_acc__Specification13_spec__2_#t~ret14#1, __utac_acc__Specification13_spec__2_#t~ret15#1, __utac_acc__Specification13_spec__2_#t~ret16#1, __utac_acc__Specification13_spec__2_~tmp~2#1, __utac_acc__Specification13_spec__2_~tmp___0~2#1, __utac_acc__Specification13_spec__2_~tmp___1~2#1, __utac_acc__Specification13_spec__2_~tmp___2~0#1, __utac_acc__Specification13_spec__2_~tmp___3~0#1, __utac_acc__Specification13_spec__2_~tmp___4~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;havoc __utac_acc__Specification13_spec__2_~tmp~2#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~2#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~0#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3); 332145#L188 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1; 330594#L189 assume !(1 == ~prevDir~0); 330595#L215 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~29#1, existInLiftCallsInDirection_~i~3#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~29#1;havoc existInLiftCallsInDirection_~i~3#1;havoc existInLiftCallsInDirection_~i___0~0#1; 321489#L3280-2 assume 1 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i~3#1 := 0;existInLiftCallsInDirection_~i~3#1 := 1 + ~currentFloorID~0; 321491#L3284-8 [2021-12-19 18:43:03,876 INFO L793 eck$LassoCheckResult]: Loop: 321491#L3284-8 assume !false; 329684#L3285-2 assume existInLiftCallsInDirection_~i~3#1 < 5; 329685#L3286-2 assume !(0 == existInLiftCallsInDirection_~i~3#1); 325502#L3299-2 assume !(1 == existInLiftCallsInDirection_~i~3#1); 319392#L3308-2 assume !(2 == existInLiftCallsInDirection_~i~3#1); 326695#L3317-2 assume !(3 == existInLiftCallsInDirection_~i~3#1); 324038#L3326-2 assume !(4 == existInLiftCallsInDirection_~i~3#1); 335397#L3327-5 existInLiftCallsInDirection_~i~3#1 := 1 + existInLiftCallsInDirection_~i~3#1; 321491#L3284-8 [2021-12-19 18:43:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:43:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1974373456, now seen corresponding path program 1 times [2021-12-19 18:43:03,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:43:03,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769003927] [2021-12-19 18:43:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:43:03,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:43:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:43:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:43:04,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 18:43:04,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769003927] [2021-12-19 18:43:04,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769003927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 18:43:04,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 18:43:04,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 18:43:04,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34140592] [2021-12-19 18:43:04,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 18:43:04,067 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 18:43:04,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:43:04,068 INFO L85 PathProgramCache]: Analyzing trace with hash -443123075, now seen corresponding path program 1 times [2021-12-19 18:43:04,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:43:04,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182981261] [2021-12-19 18:43:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:43:04,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:43:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:43:04,071 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:43:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:43:04,076 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:43:04,105 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:43:04,105 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:43:04,105 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:43:04,105 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:43:04,106 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 18:43:04,106 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:04,106 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:43:04,106 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:43:04,106 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product32.cil.c_Iteration2_Loop [2021-12-19 18:43:04,106 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:43:04,106 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:43:04,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:43:04,153 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:43:04,154 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 18:43:04,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:04,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:43:04,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:43:04,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-19 18:43:04,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:43:04,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:43:04,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-19 18:43:04,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:04,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:43:04,202 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:43:04,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-19 18:43:04,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 18:43:04,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:43:04,236 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 18:43:04,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-19 18:43:04,239 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:43:04,239 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:43:04,240 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:43:04,240 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:43:04,240 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 18:43:04,240 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:04,240 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:43:04,240 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:43:04,240 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product32.cil.c_Iteration2_Loop [2021-12-19 18:43:04,240 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:43:04,240 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:43:04,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:43:04,275 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:43:04,275 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 18:43:04,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:04,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:43:04,277 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:43:04,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-19 18:43:04,279 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:43:04,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:43:04,284 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:43:04,284 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:43:04,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:43:04,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:43:04,285 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:43:04,286 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:43:04,301 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 18:43:04,304 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 18:43:04,304 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 18:43:04,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:04,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:43:04,305 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:43:04,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-19 18:43:04,307 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 18:43:04,307 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 18:43:04,307 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 18:43:04,307 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_existInLiftCallsInDirection_~i~3#1) = -1*ULTIMATE.start_existInLiftCallsInDirection_~i~3#1 Supporting invariants [] [2021-12-19 18:43:04,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-19 18:43:04,323 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 18:43:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:43:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:43:04,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:43:04,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:43:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:43:04,472 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-19 18:43:04,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:43:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:43:04,607 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 [2021-12-19 18:43:04,607 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18479 states and 34519 transitions. cyclomatic complexity: 16074 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) [2021-12-19 18:43:05,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-19 18:43:10,963 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18479 states and 34519 transitions. cyclomatic complexity: 16074. 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 202763 states and 379773 transitions. Complement of second has 17 states. [2021-12-19 18:43:10,963 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 [2021-12-19 18:43:10,964 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) [2021-12-19 18:43:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193304 transitions. [2021-12-19 18:43:11,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 193304 transitions. Stem has 37 letters. Loop has 8 letters. [2021-12-19 18:43:11,127 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:43:11,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 193304 transitions. Stem has 45 letters. Loop has 8 letters. [2021-12-19 18:43:11,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:43:11,128 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 193304 transitions. Stem has 37 letters. Loop has 16 letters. [2021-12-19 18:43:11,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:43:11,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 202763 states and 379773 transitions. [2021-12-19 18:43:12,105 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 29608 [2021-12-19 18:43:12,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 202763 states to 118011 states and 220969 transitions. [2021-12-19 18:43:12,557 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117962 [2021-12-19 18:43:12,880 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117963 [2021-12-19 18:43:12,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118011 states and 220969 transitions. [2021-12-19 18:43:12,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:43:12,895 INFO L681 BuchiCegarLoop]: Abstraction has 118011 states and 220969 transitions. [2021-12-19 18:43:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118011 states and 220969 transitions. [2021-12-19 18:43:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118011 to 18503. [2021-12-19 18:43:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18503 states, 18503 states have (on average 1.8676430849051504) internal successors, (34557), 18502 states have internal predecessors, (34557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:43:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18503 states to 18503 states and 34557 transitions. [2021-12-19 18:43:13,556 INFO L704 BuchiCegarLoop]: Abstraction has 18503 states and 34557 transitions. [2021-12-19 18:43:13,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 18:43:13,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 18:43:13,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 18:43:13,557 INFO L87 Difference]: Start difference. First operand 18503 states and 34557 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) [2021-12-19 18:43:14,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 18:43:14,599 INFO L93 Difference]: Finished difference Result 55292 states and 103241 transitions. [2021-12-19 18:43:14,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 18:43:14,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55292 states and 103241 transitions. [2021-12-19 18:43:14,818 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 12558 [2021-12-19 18:43:14,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55292 states to 55292 states and 103241 transitions. [2021-12-19 18:43:14,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55178 [2021-12-19 18:43:15,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 55178 [2021-12-19 18:43:15,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55292 states and 103241 transitions. [2021-12-19 18:43:15,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:43:15,076 INFO L681 BuchiCegarLoop]: Abstraction has 55292 states and 103241 transitions. [2021-12-19 18:43:15,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55292 states and 103241 transitions. [2021-12-19 18:43:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55292 to 18518. [2021-12-19 18:43:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18518 states, 18518 states have (on average 1.8669402743276813) internal successors, (34572), 18517 states have internal predecessors, (34572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:43:15,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18518 states to 18518 states and 34572 transitions. [2021-12-19 18:43:15,748 INFO L704 BuchiCegarLoop]: Abstraction has 18518 states and 34572 transitions. [2021-12-19 18:43:15,748 INFO L587 BuchiCegarLoop]: Abstraction has 18518 states and 34572 transitions. [2021-12-19 18:43:15,748 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 18:43:15,748 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18518 states and 34572 transitions. [2021-12-19 18:43:15,805 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4186 [2021-12-19 18:43:15,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:43:15,805 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:43:15,806 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:43:15,806 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:43:15,807 INFO L791 eck$LassoCheckResult]: Stem: 625714#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);~weight~0 := 0;~maximumWeight~0 := 100;~executiveFloor~0 := 4;~blocked~0 := 0;~cleanupTimeShifts~0 := 12;~prevDir~0 := 0;~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~head~0.base, ~head~0.offset := 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; 621961#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret30#1, main_~retValue_acc~1#1, main_~tmp~11#1;havoc main_~retValue_acc~1#1;havoc main_~tmp~11#1;assume { :begin_inline_select_helpers } true; 620700#L1414 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 620701#L1407 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 619032#L1422 main_#t~ret30#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~11#1 := main_#t~ret30#1;havoc main_#t~ret30#1; 619033#L591 assume 0 != main_~tmp~11#1;assume { :begin_inline_setup } true; 620959#L564 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret19#1, aliceCall_~tmp~4#1;havoc aliceCall_~tmp~4#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~6#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~6#1; 624866#L1317 assume !(0 == getOrigin_~person#1); 624311#L1321 assume !(1 == getOrigin_~person#1); 624313#L1325 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~6#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~6#1; 621823#L1342 aliceCall_#t~ret19#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~4#1 := aliceCall_#t~ret19#1;havoc aliceCall_#t~ret19#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~4#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 631386#L964 assume 0 == initPersonOnFloor_~floor#1; 631364#L965 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 613905#L1072-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 613906#L756 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 614245#L768-2 assume { :end_inline_callOnFloor } true; 628915#L1108 assume { :end_inline_initPersonOnFloor } true; 615252#L324 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret20#1, angelinaCall_~tmp~5#1;havoc angelinaCall_~tmp~5#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~6#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~6#1; 615253#L1317-1 assume !(0 == getOrigin_~person#1); 624702#L1321-1 assume !(1 == getOrigin_~person#1); 623099#L1325-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~6#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~6#1; 623100#L1342-1 angelinaCall_#t~ret20#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~5#1 := angelinaCall_#t~ret20#1;havoc angelinaCall_#t~ret20#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~5#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 631392#L964-1 assume 0 == initPersonOnFloor_~floor#1; 624103#L965-2 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 612888#L1072-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 623464#L756-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 620080#L768-5 assume { :end_inline_callOnFloor } true; 622723#L1108-1 assume { :end_inline_initPersonOnFloor } true; 621692#L335 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret115#1, timeShift_~tmp~29#1;havoc timeShift_~tmp~29#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret10#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~17#1;havoc getCurrentHeading_~retValue_acc~17#1;getCurrentHeading_~retValue_acc~17#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~17#1; 621693#L2092 __utac_acc__Specification13_spec__1_#t~ret10#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret10#1;havoc __utac_acc__Specification13_spec__1_#t~ret10#1; 622439#L170 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~15#1;havoc areDoorsOpen_~retValue_acc~15#1;areDoorsOpen_~retValue_acc~15#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~15#1; 622440#L2049 timeShift_#t~ret115#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~29#1 := timeShift_#t~ret115#1;havoc timeShift_#t~ret115#1; 615332#L3060 assume 0 != timeShift_~tmp~29#1; 615334#L3061 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 627377#L3060-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret11#1, __utac_acc__Specification13_spec__2_#t~ret12#1, __utac_acc__Specification13_spec__2_#t~ret13#1, __utac_acc__Specification13_spec__2_#t~ret14#1, __utac_acc__Specification13_spec__2_#t~ret15#1, __utac_acc__Specification13_spec__2_#t~ret16#1, __utac_acc__Specification13_spec__2_~tmp~2#1, __utac_acc__Specification13_spec__2_~tmp___0~2#1, __utac_acc__Specification13_spec__2_~tmp___1~2#1, __utac_acc__Specification13_spec__2_~tmp___2~0#1, __utac_acc__Specification13_spec__2_~tmp___3~0#1, __utac_acc__Specification13_spec__2_~tmp___4~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;havoc __utac_acc__Specification13_spec__2_~tmp~2#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~2#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~0#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3); 627378#L188 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1; 625825#L189 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~29#1, existInLiftCallsInDirection_~i~3#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~29#1;havoc existInLiftCallsInDirection_~i~3#1;havoc existInLiftCallsInDirection_~i___0~0#1; 619166#L3280 assume 1 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i~3#1 := 0;existInLiftCallsInDirection_~i~3#1 := 1 + ~currentFloorID~0; 619167#L3284-2 assume !false; 620065#L3285 [2021-12-19 18:43:15,807 INFO L793 eck$LassoCheckResult]: Loop: 620065#L3285 assume existInLiftCallsInDirection_~i~3#1 < 5; 620067#L3286 assume !(0 == existInLiftCallsInDirection_~i~3#1); 623337#L3299 assume 1 == existInLiftCallsInDirection_~i~3#1; 623947#L3301 assume !(0 != ~floorButtons_1~0); 623948#L3308 assume !(2 == existInLiftCallsInDirection_~i~3#1); 621574#L3317 assume !(3 == existInLiftCallsInDirection_~i~3#1); 623205#L3326 assume !(4 == existInLiftCallsInDirection_~i~3#1); 620235#L3327-1 existInLiftCallsInDirection_~i~3#1 := 1 + existInLiftCallsInDirection_~i~3#1; 620236#L3284-2 assume !false; 620065#L3285 [2021-12-19 18:43:15,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:43:15,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1800201023, now seen corresponding path program 1 times [2021-12-19 18:43:15,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:43:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617745031] [2021-12-19 18:43:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:43:15,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:43:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:43:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:43:15,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 18:43:15,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617745031] [2021-12-19 18:43:15,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617745031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 18:43:15,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 18:43:15,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 18:43:15,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147907254] [2021-12-19 18:43:15,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 18:43:15,845 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 18:43:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:43:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 917806602, now seen corresponding path program 1 times [2021-12-19 18:43:15,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:43:15,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683409207] [2021-12-19 18:43:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:43:15,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:43:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:43:15,849 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:43:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:43:15,853 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:43:15,870 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:43:15,870 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:43:15,870 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:43:15,870 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:43:15,870 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 18:43:15,870 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:15,870 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:43:15,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:43:15,871 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product32.cil.c_Iteration3_Loop [2021-12-19 18:43:15,871 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:43:15,871 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:43:15,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:43:15,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:43:15,891 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:43:15,891 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 18:43:15,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:15,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:43:15,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:43:15,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:43:15,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:43:15,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-19 18:43:15,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-19 18:43:15,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:15,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:43:15,945 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:43:15,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-19 18:43:15,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 18:43:15,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:43:15,956 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 18:43:15,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-19 18:43:15,972 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:43:15,972 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:43:15,973 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:43:15,973 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:43:15,973 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 18:43:15,973 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:15,973 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:43:15,973 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:43:15,973 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product32.cil.c_Iteration3_Loop [2021-12-19 18:43:15,973 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:43:15,973 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:43:15,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:43:15,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:43:15,995 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:43:15,996 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 18:43:15,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:15,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:43:15,997 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:43:15,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-19 18:43:15,999 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:43:16,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:43:16,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:43:16,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:43:16,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:43:16,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:43:16,006 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:43:16,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:43:16,007 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 18:43:16,010 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 18:43:16,010 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 18:43:16,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:43:16,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:43:16,011 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:43:16,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-19 18:43:16,014 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 18:43:16,014 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 18:43:16,014 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 18:43:16,014 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_existInLiftCallsInDirection_~i~3#1) = -2*ULTIMATE.start_existInLiftCallsInDirection_~i~3#1 + 3 Supporting invariants [] [2021-12-19 18:43:16,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-19 18:43:16,030 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 18:43:16,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:43:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:43:16,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:43:16,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:43:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:43:16,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 18:43:16,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:43:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:43:16,242 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-19 18:43:16,243 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18518 states and 34572 transitions. cyclomatic complexity: 16089 Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:43:18,386 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18518 states and 34572 transitions. cyclomatic complexity: 16089. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104618 states and 195695 transitions. Complement of second has 8 states. [2021-12-19 18:43:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 18:43:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:43:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114982 transitions. [2021-12-19 18:43:18,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 114982 transitions. Stem has 39 letters. Loop has 9 letters. [2021-12-19 18:43:18,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:43:18,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 114982 transitions. Stem has 48 letters. Loop has 9 letters. [2021-12-19 18:43:18,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:43:18,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 114982 transitions. Stem has 39 letters. Loop has 18 letters. [2021-12-19 18:43:18,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:43:18,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104618 states and 195695 transitions. [2021-12-19 18:43:18,908 INFO L131 ngComponentsAnalysis]: Automaton has 62 accepting balls. 15378 [2021-12-19 18:43:19,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104618 states to 61565 states and 115126 transitions. [2021-12-19 18:43:19,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61483 [2021-12-19 18:43:19,393 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61486 [2021-12-19 18:43:19,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61565 states and 115126 transitions. [2021-12-19 18:43:19,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:43:19,450 INFO L681 BuchiCegarLoop]: Abstraction has 61565 states and 115126 transitions. [2021-12-19 18:43:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61565 states and 115126 transitions. [2021-12-19 18:43:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61565 to 18560. [2021-12-19 18:43:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18560 states, 18560 states have (on average 1.8657327586206895) internal successors, (34628), 18559 states have internal predecessors, (34628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:43:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18560 states to 18560 states and 34628 transitions. [2021-12-19 18:43:19,844 INFO L704 BuchiCegarLoop]: Abstraction has 18560 states and 34628 transitions. [2021-12-19 18:43:19,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 18:43:19,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 18:43:19,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 18:43:19,846 INFO L87 Difference]: Start difference. First operand 18560 states and 34628 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:43:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 18:43:20,226 INFO L93 Difference]: Finished difference Result 36941 states and 68929 transitions. [2021-12-19 18:43:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 18:43:20,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36941 states and 68929 transitions. [2021-12-19 18:43:20,387 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 8364