./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be08b04703653fc518e8f41dc63d028f83e90f3984633a298492c10e4ad9cfd9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:00:39,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:00:39,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:00:39,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:00:39,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:00:39,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:00:39,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:00:39,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:00:39,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:00:39,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:00:39,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:00:39,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:00:39,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:00:39,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:00:39,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:00:39,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:00:39,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:00:39,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:00:39,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:00:39,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:00:39,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:00:39,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:00:39,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:00:39,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:00:39,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:00:39,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:00:39,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:00:39,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:00:39,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:00:39,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:00:39,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:00:39,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:00:39,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:00:39,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:00:39,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:00:39,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:00:39,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:00:39,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:00:39,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:00:39,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:00:39,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:00:39,582 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:00:39,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:00:39,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:00:39,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:00:39,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:00:39,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:00:39,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:00:39,624 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:00:39,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:00:39,625 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:00:39,625 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:00:39,626 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:00:39,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:00:39,627 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:00:39,627 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:00:39,627 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:00:39,628 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:00:39,628 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:00:39,628 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:00:39,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:00:39,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:00:39,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:00:39,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:00:39,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:00:39,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:00:39,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:00:39,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:00:39,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:00:39,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:00:39,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:00:39,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:00:39,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:00:39,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:00:39,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:00:39,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:00:39,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:00:39,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:00:39,636 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:00:39,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:00:39,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:00:39,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:00:39,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:00:39,637 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be08b04703653fc518e8f41dc63d028f83e90f3984633a298492c10e4ad9cfd9 [2021-11-23 03:00:39,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:00:39,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:00:40,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:00:40,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:00:40,004 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:00:40,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2021-11-23 03:00:40,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/data/82e9e740b/b182c9564e0d4b69a82bc7cf12a99535/FLAG48351a13c [2021-11-23 03:00:40,929 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:00:40,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2021-11-23 03:00:40,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/data/82e9e740b/b182c9564e0d4b69a82bc7cf12a99535/FLAG48351a13c [2021-11-23 03:00:41,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/data/82e9e740b/b182c9564e0d4b69a82bc7cf12a99535 [2021-11-23 03:00:41,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:00:41,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:00:41,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:00:41,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:00:41,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:00:41,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:00:41" (1/1) ... [2021-11-23 03:00:41,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb7fc2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:41, skipping insertion in model container [2021-11-23 03:00:41,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:00:41" (1/1) ... [2021-11-23 03:00:41,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:00:41,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:00:41,921 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2021-11-23 03:00:41,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:00:42,000 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:00:42,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2021-11-23 03:00:42,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:00:42,197 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:00:42,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42 WrapperNode [2021-11-23 03:00:42,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:00:42,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:00:42,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:00:42,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:00:42,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (1/1) ... [2021-11-23 03:00:42,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (1/1) ... [2021-11-23 03:00:42,348 INFO L137 Inliner]: procedures = 96, calls = 348, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 911 [2021-11-23 03:00:42,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:00:42,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:00:42,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:00:42,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:00:42,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (1/1) ... [2021-11-23 03:00:42,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (1/1) ... [2021-11-23 03:00:42,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (1/1) ... [2021-11-23 03:00:42,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (1/1) ... [2021-11-23 03:00:42,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (1/1) ... [2021-11-23 03:00:42,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (1/1) ... [2021-11-23 03:00:42,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (1/1) ... [2021-11-23 03:00:42,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:00:42,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:00:42,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:00:42,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:00:42,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (1/1) ... [2021-11-23 03:00:42,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:00:42,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:00:42,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:00:42,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:00:42,677 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2021-11-23 03:00:42,678 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2021-11-23 03:00:42,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:00:42,678 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-11-23 03:00:42,678 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-11-23 03:00:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-23 03:00:42,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-23 03:00:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-23 03:00:42,679 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-23 03:00:42,680 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-23 03:00:42,680 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-23 03:00:42,680 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-11-23 03:00:42,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-11-23 03:00:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-23 03:00:42,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-23 03:00:42,681 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-23 03:00:42,681 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-23 03:00:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 03:00:42,682 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 03:00:42,682 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 03:00:42,682 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 03:00:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-23 03:00:42,683 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-23 03:00:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-23 03:00:42,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-23 03:00:42,683 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-23 03:00:42,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-23 03:00:42,684 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-23 03:00:42,684 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-23 03:00:42,684 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-23 03:00:42,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-23 03:00:42,685 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-23 03:00:42,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-23 03:00:42,685 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-23 03:00:42,686 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-23 03:00:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-23 03:00:42,686 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-23 03:00:42,686 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-23 03:00:42,687 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-23 03:00:42,687 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-23 03:00:42,714 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-23 03:00:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-23 03:00:42,714 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-23 03:00:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:00:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-23 03:00:42,716 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-23 03:00:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-23 03:00:42,718 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-23 03:00:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-23 03:00:42,719 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-23 03:00:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-23 03:00:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-23 03:00:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2021-11-23 03:00:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2021-11-23 03:00:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:00:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:00:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-23 03:00:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-23 03:00:43,029 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:00:43,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:00:44,702 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:00:45,497 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:00:45,497 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:00:45,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:00:45 BoogieIcfgContainer [2021-11-23 03:00:45,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:00:45,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:00:45,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:00:45,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:00:45,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:00:41" (1/3) ... [2021-11-23 03:00:45,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e133014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:00:45, skipping insertion in model container [2021-11-23 03:00:45,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:00:42" (2/3) ... [2021-11-23 03:00:45,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e133014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:00:45, skipping insertion in model container [2021-11-23 03:00:45,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:00:45" (3/3) ... [2021-11-23 03:00:45,518 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product23.cil.c [2021-11-23 03:00:45,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:00:45,530 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:00:45,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:00:45,634 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:00:45,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:00:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-23 03:00:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 03:00:45,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:45,751 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:45,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:00:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:45,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1891006212, now seen corresponding path program 1 times [2021-11-23 03:00:45,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:45,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081373563] [2021-11-23 03:00:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:45,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:00:46,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:46,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081373563] [2021-11-23 03:00:46,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081373563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:46,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:46,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:00:46,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000899181] [2021-11-23 03:00:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:46,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:00:46,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:46,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:00:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:00:46,626 INFO L87 Difference]: Start difference. First operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-23 03:00:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:46,985 INFO L93 Difference]: Finished difference Result 422 states and 661 transitions. [2021-11-23 03:00:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:00:46,991 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2021-11-23 03:00:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:47,031 INFO L225 Difference]: With dead ends: 422 [2021-11-23 03:00:47,033 INFO L226 Difference]: Without dead ends: 400 [2021-11-23 03:00:47,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:00:47,044 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:47,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:00:47,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-11-23 03:00:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2021-11-23 03:00:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 268 states have (on average 1.5597014925373134) internal successors, (418), 287 states have internal predecessors, (418), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2021-11-23 03:00:47,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 623 transitions. [2021-11-23 03:00:47,221 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 623 transitions. Word has length 88 [2021-11-23 03:00:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:47,227 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 623 transitions. [2021-11-23 03:00:47,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-23 03:00:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 623 transitions. [2021-11-23 03:00:47,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 03:00:47,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:47,240 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:47,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:00:47,243 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:00:47,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash 841970578, now seen corresponding path program 1 times [2021-11-23 03:00:47,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:47,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975021039] [2021-11-23 03:00:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:47,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:00:47,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:47,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975021039] [2021-11-23 03:00:47,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975021039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:47,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:47,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 03:00:47,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658903259] [2021-11-23 03:00:47,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:47,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:00:47,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:47,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:00:47,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:00:47,601 INFO L87 Difference]: Start difference. First operand 400 states and 623 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-23 03:00:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:50,884 INFO L93 Difference]: Finished difference Result 1217 states and 1930 transitions. [2021-11-23 03:00:50,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:00:50,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2021-11-23 03:00:50,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:50,905 INFO L225 Difference]: With dead ends: 1217 [2021-11-23 03:00:50,905 INFO L226 Difference]: Without dead ends: 840 [2021-11-23 03:00:50,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:00:50,915 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1192 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:50,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 1921 Invalid, 2870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [481 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-23 03:00:50,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-23 03:00:51,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 791. [2021-11-23 03:00:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 540 states have (on average 1.5740740740740742) internal successors, (850), 573 states have internal predecessors, (850), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2021-11-23 03:00:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1253 transitions. [2021-11-23 03:00:51,090 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1253 transitions. Word has length 89 [2021-11-23 03:00:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:51,091 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1253 transitions. [2021-11-23 03:00:51,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-23 03:00:51,092 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1253 transitions. [2021-11-23 03:00:51,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 03:00:51,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:51,095 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:51,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:00:51,096 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:00:51,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:51,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1641248, now seen corresponding path program 1 times [2021-11-23 03:00:51,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:51,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562052551] [2021-11-23 03:00:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:51,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:00:51,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:51,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562052551] [2021-11-23 03:00:51,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562052551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:51,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:51,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:00:51,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252855595] [2021-11-23 03:00:51,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:51,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:00:51,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:51,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:00:51,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:00:51,301 INFO L87 Difference]: Start difference. First operand 791 states and 1253 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 03:00:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:51,980 INFO L93 Difference]: Finished difference Result 862 states and 1365 transitions. [2021-11-23 03:00:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:00:51,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2021-11-23 03:00:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:51,998 INFO L225 Difference]: With dead ends: 862 [2021-11-23 03:00:51,998 INFO L226 Difference]: Without dead ends: 847 [2021-11-23 03:00:52,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:00:52,013 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 715 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:52,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1547 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:00:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-23 03:00:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 795. [2021-11-23 03:00:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5698529411764706) internal successors, (854), 577 states have internal predecessors, (854), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2021-11-23 03:00:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1257 transitions. [2021-11-23 03:00:52,101 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1257 transitions. Word has length 93 [2021-11-23 03:00:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:52,103 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 1257 transitions. [2021-11-23 03:00:52,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 03:00:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1257 transitions. [2021-11-23 03:00:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-23 03:00:52,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:52,109 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:52,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:00:52,109 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:00:52,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1200315626, now seen corresponding path program 1 times [2021-11-23 03:00:52,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:52,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649596793] [2021-11-23 03:00:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:52,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:00:52,327 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:52,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649596793] [2021-11-23 03:00:52,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649596793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:52,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:00:52,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:00:52,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346007298] [2021-11-23 03:00:52,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:52,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:00:52,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:00:52,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:00:52,331 INFO L87 Difference]: Start difference. First operand 795 states and 1257 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-23 03:00:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:52,551 INFO L93 Difference]: Finished difference Result 814 states and 1281 transitions. [2021-11-23 03:00:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:00:52,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2021-11-23 03:00:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:52,563 INFO L225 Difference]: With dead ends: 814 [2021-11-23 03:00:52,564 INFO L226 Difference]: Without dead ends: 799 [2021-11-23 03:00:52,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:00:52,567 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 30 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:52,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 2316 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:00:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-23 03:00:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 795. [2021-11-23 03:00:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5661764705882353) internal successors, (852), 577 states have internal predecessors, (852), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2021-11-23 03:00:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1255 transitions. [2021-11-23 03:00:52,650 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1255 transitions. Word has length 98 [2021-11-23 03:00:52,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:52,651 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 1255 transitions. [2021-11-23 03:00:52,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-23 03:00:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1255 transitions. [2021-11-23 03:00:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 03:00:52,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:52,658 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:52,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:00:52,658 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:00:52,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash 826927623, now seen corresponding path program 1 times [2021-11-23 03:00:52,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:52,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614098568] [2021-11-23 03:00:52,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:52,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:00:54,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:54,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614098568] [2021-11-23 03:00:54,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614098568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:00:54,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536654566] [2021-11-23 03:00:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:54,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:00:54,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:00:54,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:00:54,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:00:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:54,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 03:00:54,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:00:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:00:55,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:00:55,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536654566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:00:55,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:00:55,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [29] total 31 [2021-11-23 03:00:55,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585626772] [2021-11-23 03:00:55,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:00:55,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:00:55,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:00:55,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:00:55,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=848, Unknown=0, NotChecked=0, Total=930 [2021-11-23 03:00:55,237 INFO L87 Difference]: Start difference. First operand 795 states and 1255 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-23 03:00:55,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:00:55,460 INFO L93 Difference]: Finished difference Result 878 states and 1379 transitions. [2021-11-23 03:00:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:00:55,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 105 [2021-11-23 03:00:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:00:55,475 INFO L225 Difference]: With dead ends: 878 [2021-11-23 03:00:55,476 INFO L226 Difference]: Without dead ends: 863 [2021-11-23 03:00:55,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2021-11-23 03:00:55,482 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 44 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:00:55,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1816 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:00:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-11-23 03:00:55,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 799. [2021-11-23 03:00:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 548 states have (on average 1.562043795620438) internal successors, (856), 581 states have internal predecessors, (856), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2021-11-23 03:00:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1259 transitions. [2021-11-23 03:00:55,556 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1259 transitions. Word has length 105 [2021-11-23 03:00:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:00:55,558 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1259 transitions. [2021-11-23 03:00:55,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-23 03:00:55,561 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1259 transitions. [2021-11-23 03:00:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 03:00:55,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:00:55,566 INFO L514 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:00:55,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:00:55,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:00:55,783 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:00:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:00:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash -205965631, now seen corresponding path program 1 times [2021-11-23 03:00:55,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:00:55,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848491034] [2021-11-23 03:00:55,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:55,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:00:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-23 03:00:56,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:00:56,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848491034] [2021-11-23 03:00:56,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848491034] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:00:56,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659825135] [2021-11-23 03:00:56,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:00:56,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:00:56,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:00:56,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:00:56,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff52a9e-3d9c-4926-8e2d-4a41b834f298/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:00:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:00:56,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-23 03:00:56,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:00:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:00:59,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:01:57,960 WARN L227 SmtUtils]: Spent 53.22s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-23 03:02:49,468 WARN L227 SmtUtils]: Spent 50.81s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-23 03:02:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-23 03:02:50,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659825135] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:02:50,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1836599162] [2021-11-23 03:02:50,576 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2021-11-23 03:02:50,576 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:02:50,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:02:50,591 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:02:50,592 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:03:17,674 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 534 for LOIs [2021-11-23 03:03:18,587 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2021-11-23 03:07:40,877 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 586 for LOIs [2021-11-23 03:08:41,074 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 447 for LOIs [2021-11-23 03:08:43,713 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 501 for LOIs [2021-11-23 03:08:46,469 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 78 for LOIs [2021-11-23 03:08:46,495 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 109 for LOIs [2021-11-23 03:08:46,527 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2021-11-23 03:08:51,385 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 491 for LOIs [2021-11-23 03:08:52,182 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 455 for LOIs [2021-11-23 03:08:53,422 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 449 for LOIs [2021-11-23 03:08:53,526 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2021-11-23 03:08:57,159 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2021-11-23 03:09:04,934 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2021-11-23 03:09:05,529 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:09:33,743 WARN L227 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:09:48,377 WARN L227 SmtUtils]: Spent 12.97s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:09:56,840 WARN L227 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:10:05,428 WARN L227 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:10:20,758 WARN L227 SmtUtils]: Spent 12.02s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:10:31,178 WARN L227 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 836 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:05,258 WARN L227 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 501 DAG size of output: 470 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:13,213 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 628 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:19,568 WARN L227 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 628 DAG size of output: 602 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:32,104 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 634 DAG size of output: 607 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:38,075 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 632 DAG size of output: 606 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:44,154 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 638 DAG size of output: 610 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:50,142 WARN L227 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 643 DAG size of output: 612 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:56,245 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 642 DAG size of output: 612 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:27,134 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 653 DAG size of output: 622 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:33,070 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 653 DAG size of output: 622 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)