./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P --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 b90339f9090766921b1c16763101e1e0bf56713d98b802bfaa51b02dabc40a61 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:29:30,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:29:30,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:29:30,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:29:30,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:29:30,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:29:30,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:29:30,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:29:30,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:29:30,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:29:30,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:29:30,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:29:30,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:29:30,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:29:30,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:29:30,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:29:30,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:29:30,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:29:30,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:29:30,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:29:30,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:29:30,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:29:30,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:29:30,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:29:30,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:29:30,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:29:30,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:29:30,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:29:30,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:29:30,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:29:30,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:29:30,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:29:30,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:29:30,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:29:30,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:29:30,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:29:30,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:29:30,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:29:30,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:29:30,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:29:30,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:29:30,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:29:30,794 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:29:30,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:29:30,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:29:30,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:29:30,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:29:30,795 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:29:30,796 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:29:30,796 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:29:30,796 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:29:30,796 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:29:30,797 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:29:30,797 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:29:30,797 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:29:30,797 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:29:30,797 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:29:30,798 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:29:30,798 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:29:30,798 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:29:30,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:29:30,799 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:29:30,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:29:30,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:29:30,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:29:30,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:29:30,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:29:30,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:29:30,801 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:29:30,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:29:30,801 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:29:30,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:29:30,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:29:30,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:29:30,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:29:30,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:29:30,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:29:30,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:29:30,803 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:29:30,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:29:30,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:29:30,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:29:30,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:29:30,804 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_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b90339f9090766921b1c16763101e1e0bf56713d98b802bfaa51b02dabc40a61 [2021-11-21 01:29:31,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:29:31,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:29:31,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:29:31,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:29:31,110 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:29:31,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2021-11-21 01:29:31,188 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/data/2dbbb8d20/ce0d82c0898b4b398d6c8ede1ed20990/FLAGb0f3e1045 [2021-11-21 01:29:31,815 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:29:31,816 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2021-11-21 01:29:31,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/data/2dbbb8d20/ce0d82c0898b4b398d6c8ede1ed20990/FLAGb0f3e1045 [2021-11-21 01:29:32,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/data/2dbbb8d20/ce0d82c0898b4b398d6c8ede1ed20990 [2021-11-21 01:29:32,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:29:32,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:29:32,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:29:32,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:29:32,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:29:32,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:29:32" (1/1) ... [2021-11-21 01:29:32,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5028e07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:32, skipping insertion in model container [2021-11-21 01:29:32,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:29:32" (1/1) ... [2021-11-21 01:29:32,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:29:32,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:29:32,635 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_5495c122-4719-4dd8-9380-6b843a85b905/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35415,35428] [2021-11-21 01:29:32,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:29:32,811 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:29:32,923 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_5495c122-4719-4dd8-9380-6b843a85b905/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35415,35428] [2021-11-21 01:29:33,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:29:33,046 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:29:33,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33 WrapperNode [2021-11-21 01:29:33,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:29:33,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:29:33,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:29:33,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:29:33,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (1/1) ... [2021-11-21 01:29:33,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (1/1) ... [2021-11-21 01:29:33,169 INFO L137 Inliner]: procedures = 95, calls = 343, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1152 [2021-11-21 01:29:33,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:29:33,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:29:33,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:29:33,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:29:33,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (1/1) ... [2021-11-21 01:29:33,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (1/1) ... [2021-11-21 01:29:33,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (1/1) ... [2021-11-21 01:29:33,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (1/1) ... [2021-11-21 01:29:33,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (1/1) ... [2021-11-21 01:29:33,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (1/1) ... [2021-11-21 01:29:33,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (1/1) ... [2021-11-21 01:29:33,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:29:33,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:29:33,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:29:33,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:29:33,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (1/1) ... [2021-11-21 01:29:33,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:29:33,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:33,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:29:33,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:29:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2021-11-21 01:29:33,453 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2021-11-21 01:29:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:29:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-21 01:29:33,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-21 01:29:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-21 01:29:33,454 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-21 01:29:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-21 01:29:33,454 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-21 01:29:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-11-21 01:29:33,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-11-21 01:29:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-21 01:29:33,455 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-21 01:29:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-21 01:29:33,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-21 01:29:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-21 01:29:33,455 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-21 01:29:33,455 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-21 01:29:33,455 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-21 01:29:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-21 01:29:33,456 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-21 01:29:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-21 01:29:33,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-21 01:29:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-21 01:29:33,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-21 01:29:33,456 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-21 01:29:33,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-21 01:29:33,457 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-21 01:29:33,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-21 01:29:33,457 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-21 01:29:33,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-21 01:29:33,457 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-21 01:29:33,457 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-21 01:29:33,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-11-21 01:29:33,457 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-11-21 01:29:33,458 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-21 01:29:33,458 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-21 01:29:33,458 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-21 01:29:33,458 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-21 01:29:33,458 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-21 01:29:33,458 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-21 01:29:33,458 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-21 01:29:33,458 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-21 01:29:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:29:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-21 01:29:33,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-21 01:29:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-21 01:29:33,459 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-21 01:29:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-21 01:29:33,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-21 01:29:33,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:29:33,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:29:33,460 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-21 01:29:33,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-21 01:29:33,680 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:29:33,682 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:29:34,565 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:29:35,263 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:29:35,264 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:29:35,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:29:35 BoogieIcfgContainer [2021-11-21 01:29:35,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:29:35,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:29:35,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:29:35,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:29:35,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:29:32" (1/3) ... [2021-11-21 01:29:35,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36661e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:29:35, skipping insertion in model container [2021-11-21 01:29:35,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:33" (2/3) ... [2021-11-21 01:29:35,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36661e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:29:35, skipping insertion in model container [2021-11-21 01:29:35,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:29:35" (3/3) ... [2021-11-21 01:29:35,280 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product27.cil.c [2021-11-21 01:29:35,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:29:35,285 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:29:35,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:29:35,363 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 [2021-11-21 01:29:35,363 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:29:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 381 states, 255 states have (on average 1.588235294117647) internal successors, (405), 276 states have internal predecessors, (405), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-21 01:29:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-21 01:29:35,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:35,445 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] [2021-11-21 01:29:35,446 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:35,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1696278331, now seen corresponding path program 1 times [2021-11-21 01:29:35,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:35,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038902852] [2021-11-21 01:29:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:35,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-21 01:29:36,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:36,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038902852] [2021-11-21 01:29:36,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038902852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:36,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:36,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:29:36,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685581837] [2021-11-21 01:29:36,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:36,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:29:36,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:36,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:29:36,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:29:36,182 INFO L87 Difference]: Start difference. First operand has 381 states, 255 states have (on average 1.588235294117647) internal successors, (405), 276 states have internal predecessors, (405), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) 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) [2021-11-21 01:29:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:36,382 INFO L93 Difference]: Finished difference Result 399 states and 630 transitions. [2021-11-21 01:29:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:29:36,385 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 [2021-11-21 01:29:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:36,420 INFO L225 Difference]: With dead ends: 399 [2021-11-21 01:29:36,420 INFO L226 Difference]: Without dead ends: 377 [2021-11-21 01:29:36,425 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 [2021-11-21 01:29:36,433 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:36,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 560 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-21 01:29:36,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-21 01:29:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 253 states have (on average 1.5770750988142292) internal successors, (399), 272 states have internal predecessors, (399), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2021-11-21 01:29:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 592 transitions. [2021-11-21 01:29:36,553 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 592 transitions. Word has length 88 [2021-11-21 01:29:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:36,555 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 592 transitions. [2021-11-21 01:29:36,556 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) [2021-11-21 01:29:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 592 transitions. [2021-11-21 01:29:36,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-21 01:29:36,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:36,563 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] [2021-11-21 01:29:36,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:29:36,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:36,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1539292562, now seen corresponding path program 1 times [2021-11-21 01:29:36,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:36,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440908222] [2021-11-21 01:29:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:36,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-21 01:29:36,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:36,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440908222] [2021-11-21 01:29:36,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440908222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:36,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:36,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:29:36,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506543374] [2021-11-21 01:29:36,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:36,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:29:36,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:36,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:29:36,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:29:36,892 INFO L87 Difference]: Start difference. First operand 377 states and 592 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) [2021-11-21 01:29:39,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:39,257 INFO L93 Difference]: Finished difference Result 1148 states and 1837 transitions. [2021-11-21 01:29:39,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:29:39,258 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 [2021-11-21 01:29:39,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:39,269 INFO L225 Difference]: With dead ends: 1148 [2021-11-21 01:29:39,269 INFO L226 Difference]: Without dead ends: 794 [2021-11-21 01:29:39,275 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 [2021-11-21 01:29:39,276 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 1135 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:39,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 1892 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-21 01:29:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-21 01:29:39,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 745. [2021-11-21 01:29:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 510 states have (on average 1.592156862745098) internal successors, (812), 543 states have internal predecessors, (812), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-21 01:29:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1191 transitions. [2021-11-21 01:29:39,384 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1191 transitions. Word has length 89 [2021-11-21 01:29:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:39,385 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1191 transitions. [2021-11-21 01:29:39,385 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) [2021-11-21 01:29:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1191 transitions. [2021-11-21 01:29:39,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-21 01:29:39,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:39,391 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] [2021-11-21 01:29:39,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:29:39,392 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:39,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash -571796844, now seen corresponding path program 1 times [2021-11-21 01:29:39,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:39,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974884592] [2021-11-21 01:29:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:39,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-21 01:29:39,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:39,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974884592] [2021-11-21 01:29:39,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974884592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:39,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:39,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:29:39,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604826867] [2021-11-21 01:29:39,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:39,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:29:39,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:29:39,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:29:39,612 INFO L87 Difference]: Start difference. First operand 745 states and 1191 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) [2021-11-21 01:29:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:40,077 INFO L93 Difference]: Finished difference Result 816 states and 1303 transitions. [2021-11-21 01:29:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:29:40,078 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 [2021-11-21 01:29:40,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:40,088 INFO L225 Difference]: With dead ends: 816 [2021-11-21 01:29:40,088 INFO L226 Difference]: Without dead ends: 801 [2021-11-21 01:29:40,089 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 [2021-11-21 01:29:40,098 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 684 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:40,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 1472 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:29:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-11-21 01:29:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 749. [2021-11-21 01:29:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 514 states have (on average 1.5875486381322956) internal successors, (816), 547 states have internal predecessors, (816), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-21 01:29:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1195 transitions. [2021-11-21 01:29:40,187 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1195 transitions. Word has length 93 [2021-11-21 01:29:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:40,189 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1195 transitions. [2021-11-21 01:29:40,189 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) [2021-11-21 01:29:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1195 transitions. [2021-11-21 01:29:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-21 01:29:40,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:40,198 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] [2021-11-21 01:29:40,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:29:40,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:40,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash -840832870, now seen corresponding path program 1 times [2021-11-21 01:29:40,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:40,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035448163] [2021-11-21 01:29:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:40,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-21 01:29:40,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:40,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035448163] [2021-11-21 01:29:40,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035448163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:40,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:40,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:29:40,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819928567] [2021-11-21 01:29:40,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:40,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:29:40,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:40,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:29:40,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:29:40,415 INFO L87 Difference]: Start difference. First operand 749 states and 1195 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) [2021-11-21 01:29:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:40,569 INFO L93 Difference]: Finished difference Result 768 states and 1219 transitions. [2021-11-21 01:29:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:29:40,570 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 [2021-11-21 01:29:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:40,579 INFO L225 Difference]: With dead ends: 768 [2021-11-21 01:29:40,580 INFO L226 Difference]: Without dead ends: 753 [2021-11-21 01:29:40,581 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 [2021-11-21 01:29:40,582 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 30 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:40,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 2200 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:29:40,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-11-21 01:29:40,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 749. [2021-11-21 01:29:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 514 states have (on average 1.583657587548638) internal successors, (814), 547 states have internal predecessors, (814), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-21 01:29:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1193 transitions. [2021-11-21 01:29:40,653 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1193 transitions. Word has length 98 [2021-11-21 01:29:40,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:40,654 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1193 transitions. [2021-11-21 01:29:40,655 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) [2021-11-21 01:29:40,655 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1193 transitions. [2021-11-21 01:29:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-21 01:29:40,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:40,659 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] [2021-11-21 01:29:40,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:29:40,660 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:40,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1385729553, now seen corresponding path program 1 times [2021-11-21 01:29:40,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:40,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737313149] [2021-11-21 01:29:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:40,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-21 01:29:41,230 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:41,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737313149] [2021-11-21 01:29:41,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737313149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:41,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057444177] [2021-11-21 01:29:41,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:41,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:41,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:41,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:41,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:29:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:41,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:29:41,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-21 01:29:41,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:29:41,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057444177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:41,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:29:41,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 24 [2021-11-21 01:29:41,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102462460] [2021-11-21 01:29:41,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:41,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:29:41,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:41,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:29:41,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2021-11-21 01:29:41,974 INFO L87 Difference]: Start difference. First operand 749 states and 1193 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) [2021-11-21 01:29:42,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:42,207 INFO L93 Difference]: Finished difference Result 832 states and 1317 transitions. [2021-11-21 01:29:42,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:29:42,208 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 [2021-11-21 01:29:42,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:42,218 INFO L225 Difference]: With dead ends: 832 [2021-11-21 01:29:42,218 INFO L226 Difference]: Without dead ends: 817 [2021-11-21 01:29:42,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-11-21 01:29:42,224 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 44 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:42,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1729 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:29:42,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-11-21 01:29:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 753. [2021-11-21 01:29:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 518 states have (on average 1.579150579150579) internal successors, (818), 551 states have internal predecessors, (818), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-21 01:29:42,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1197 transitions. [2021-11-21 01:29:42,281 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1197 transitions. Word has length 105 [2021-11-21 01:29:42,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:42,281 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1197 transitions. [2021-11-21 01:29:42,281 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) [2021-11-21 01:29:42,282 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1197 transitions. [2021-11-21 01:29:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-21 01:29:42,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:42,286 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] [2021-11-21 01:29:42,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:29:42,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:42,503 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:29:42,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:42,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1502716547, now seen corresponding path program 1 times [2021-11-21 01:29:42,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:42,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33529526] [2021-11-21 01:29:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:42,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-21 01:29:42,857 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:42,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33529526] [2021-11-21 01:29:42,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33529526] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:29:42,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189913272] [2021-11-21 01:29:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:42,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:29:42,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:42,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:29:42,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5495c122-4719-4dd8-9380-6b843a85b905/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:29:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:43,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-21 01:29:43,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:29:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 01:29:45,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:43,737 WARN L227 SmtUtils]: Spent 53.26s 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) [2021-11-21 01:31:36,152 WARN L227 SmtUtils]: Spent 51.87s 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) [2021-11-21 01:31:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-21 01:31:36,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189913272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:36,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [796093374] [2021-11-21 01:31:37,024 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2021-11-21 01:31:37,024 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:31:37,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:31:37,035 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:31:37,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:32:41,447 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 448 for LOIs [2021-11-21 01:32:43,223 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2021-11-21 01:34:45,714 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 586 for LOIs [2021-11-21 01:39:30,934 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 456 for LOIs [2021-11-21 01:40:03,496 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 499 for LOIs [2021-11-21 01:40:27,612 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 41 for LOIs [2021-11-21 01:40:27,743 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 87 for LOIs [2021-11-21 01:40:27,950 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2021-11-21 01:41:18,548 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 423 for LOIs [2021-11-21 01:41:20,203 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 456 for LOIs