./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7 --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 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:40:33,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:40:33,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:40:33,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:40:33,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:40:33,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:40:33,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:40:33,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:40:33,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:40:33,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:40:33,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:40:33,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:40:33,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:40:33,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:40:33,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:40:33,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:40:33,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:40:33,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:40:33,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:40:33,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:40:33,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:40:33,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:40:33,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:40:33,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:40:33,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:40:33,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:40:33,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:40:33,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:40:33,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:40:33,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:40:33,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:40:33,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:40:33,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:40:33,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:40:33,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:40:33,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:40:33,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:40:33,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:40:33,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:40:33,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:40:33,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:40:33,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:40:34,041 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:40:34,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:40:34,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:40:34,047 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:40:34,048 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:40:34,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:40:34,055 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:40:34,055 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:40:34,055 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:40:34,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:40:34,057 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:40:34,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:40:34,057 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:40:34,057 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:40:34,058 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:40:34,058 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:40:34,058 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:40:34,058 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:40:34,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:40:34,060 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:40:34,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:40:34,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:40:34,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:40:34,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:40:34,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:40:34,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:40:34,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:40:34,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:40:34,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:40:34,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:40:34,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:40:34,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:40:34,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:40:34,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:40:34,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:40:34,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:40:34,066 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:40:34,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:40:34,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:40:34,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:40:34,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:40:34,067 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_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb [2021-11-25 19:40:34,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:40:34,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:40:34,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:40:34,351 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:40:34,352 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:40:34,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2021-11-25 19:40:34,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/data/f88823be5/72fd304c9c6c4aa0af1d7e05274b3dae/FLAG7a723d99c [2021-11-25 19:40:35,067 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:40:35,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2021-11-25 19:40:35,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/data/f88823be5/72fd304c9c6c4aa0af1d7e05274b3dae/FLAG7a723d99c [2021-11-25 19:40:35,215 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/data/f88823be5/72fd304c9c6c4aa0af1d7e05274b3dae [2021-11-25 19:40:35,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:40:35,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:40:35,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:40:35,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:40:35,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:40:35,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:40:35" (1/1) ... [2021-11-25 19:40:35,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64907d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:35, skipping insertion in model container [2021-11-25 19:40:35,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:40:35" (1/1) ... [2021-11-25 19:40:35,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:40:35,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:40:35,769 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_1c1928b2-72be-4e7f-861d-ca126e59e588/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2021-11-25 19:40:35,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:40:35,965 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:40:36,059 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_1c1928b2-72be-4e7f-861d-ca126e59e588/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2021-11-25 19:40:36,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:40:36,135 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:40:36,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36 WrapperNode [2021-11-25 19:40:36,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:40:36,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:40:36,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:40:36,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:40:36,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (1/1) ... [2021-11-25 19:40:36,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (1/1) ... [2021-11-25 19:40:36,254 INFO L137 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1118 [2021-11-25 19:40:36,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:40:36,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:40:36,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:40:36,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:40:36,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (1/1) ... [2021-11-25 19:40:36,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (1/1) ... [2021-11-25 19:40:36,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (1/1) ... [2021-11-25 19:40:36,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (1/1) ... [2021-11-25 19:40:36,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (1/1) ... [2021-11-25 19:40:36,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (1/1) ... [2021-11-25 19:40:36,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (1/1) ... [2021-11-25 19:40:36,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:40:36,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:40:36,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:40:36,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:40:36,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (1/1) ... [2021-11-25 19:40:36,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:40:36,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:40:36,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:40:36,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:40:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2021-11-25 19:40:36,489 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2021-11-25 19:40:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:40:36,489 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-25 19:40:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-25 19:40:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-25 19:40:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-25 19:40:36,490 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-11-25 19:40:36,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-11-25 19:40:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-25 19:40:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-25 19:40:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-25 19:40:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-25 19:40:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-25 19:40:36,491 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-25 19:40:36,491 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-25 19:40:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-25 19:40:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-25 19:40:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-25 19:40:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-25 19:40:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-25 19:40:36,492 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-25 19:40:36,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-25 19:40:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-25 19:40:36,493 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-25 19:40:36,493 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-25 19:40:36,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-25 19:40:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-25 19:40:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-25 19:40:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-25 19:40:36,494 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-25 19:40:36,494 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-11-25 19:40:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-11-25 19:40:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-25 19:40:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-25 19:40:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-25 19:40:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-25 19:40:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-25 19:40:36,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-25 19:40:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-25 19:40:36,496 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-25 19:40:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:40:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-25 19:40:36,496 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-25 19:40:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-25 19:40:36,497 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-25 19:40:36,497 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-25 19:40:36,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-25 19:40:36,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:40:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:40:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-25 19:40:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-25 19:40:36,722 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:40:36,728 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:40:37,831 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:40:38,462 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:40:38,462 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:40:38,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:40:38 BoogieIcfgContainer [2021-11-25 19:40:38,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:40:38,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:40:38,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:40:38,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:40:38,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:40:35" (1/3) ... [2021-11-25 19:40:38,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b58080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:40:38, skipping insertion in model container [2021-11-25 19:40:38,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:40:36" (2/3) ... [2021-11-25 19:40:38,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b58080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:40:38, skipping insertion in model container [2021-11-25 19:40:38,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:40:38" (3/3) ... [2021-11-25 19:40:38,474 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2021-11-25 19:40:38,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:40:38,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:40:38,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:40:38,539 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 [2021-11-25 19:40:38,539 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:40:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2021-11-25 19:40:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 19:40:38,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:38,591 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] [2021-11-25 19:40:38,591 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:40:38,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash 990924699, now seen corresponding path program 1 times [2021-11-25 19:40:38,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:38,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219196833] [2021-11-25 19:40:38,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:38,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:40:39,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:39,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219196833] [2021-11-25 19:40:39,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219196833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:39,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:39,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:40:39,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654664920] [2021-11-25 19:40:39,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:39,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:40:39,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:39,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:40:39,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:40:39,272 INFO L87 Difference]: Start difference. First operand has 375 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) 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) [2021-11-25 19:40:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:39,486 INFO L93 Difference]: Finished difference Result 393 states and 623 transitions. [2021-11-25 19:40:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:40:39,489 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 [2021-11-25 19:40:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:39,508 INFO L225 Difference]: With dead ends: 393 [2021-11-25 19:40:39,509 INFO L226 Difference]: Without dead ends: 371 [2021-11-25 19:40:39,512 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 [2021-11-25 19:40:39,516 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:39,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:40:39,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-25 19:40:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-11-25 19:40:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 250 states have (on average 1.584) internal successors, (396), 269 states have internal predecessors, (396), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2021-11-25 19:40:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 585 transitions. [2021-11-25 19:40:39,617 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 585 transitions. Word has length 88 [2021-11-25 19:40:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:39,618 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 585 transitions. [2021-11-25 19:40:39,619 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) [2021-11-25 19:40:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 585 transitions. [2021-11-25 19:40:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 19:40:39,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:39,631 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] [2021-11-25 19:40:39,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:40:39,632 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:40:39,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1041667582, now seen corresponding path program 1 times [2021-11-25 19:40:39,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:39,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811140749] [2021-11-25 19:40:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:39,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:40:39,911 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:39,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811140749] [2021-11-25 19:40:39,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811140749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:39,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:39,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:40:39,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744826260] [2021-11-25 19:40:39,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:39,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:40:39,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:39,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:40:39,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:40:39,915 INFO L87 Difference]: Start difference. First operand 371 states and 585 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) [2021-11-25 19:40:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:42,240 INFO L93 Difference]: Finished difference Result 1130 states and 1816 transitions. [2021-11-25 19:40:42,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:40:42,241 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 [2021-11-25 19:40:42,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:42,250 INFO L225 Difference]: With dead ends: 1130 [2021-11-25 19:40:42,250 INFO L226 Difference]: Without dead ends: 782 [2021-11-25 19:40:42,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:40:42,258 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 1126 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:42,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 1888 Invalid, 2641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-25 19:40:42,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-11-25 19:40:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 733. [2021-11-25 19:40:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 504 states have (on average 1.5992063492063493) internal successors, (806), 537 states have internal predecessors, (806), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2021-11-25 19:40:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1177 transitions. [2021-11-25 19:40:42,380 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1177 transitions. Word has length 89 [2021-11-25 19:40:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:42,383 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 1177 transitions. [2021-11-25 19:40:42,383 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) [2021-11-25 19:40:42,384 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1177 transitions. [2021-11-25 19:40:42,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 19:40:42,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:42,394 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] [2021-11-25 19:40:42,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:40:42,395 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:40:42,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:42,395 INFO L85 PathProgramCache]: Analyzing trace with hash -427096989, now seen corresponding path program 1 times [2021-11-25 19:40:42,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:42,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476851944] [2021-11-25 19:40:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:42,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:40:42,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:42,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476851944] [2021-11-25 19:40:42,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476851944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:42,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:42,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:40:42,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226338235] [2021-11-25 19:40:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:42,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:40:42,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:42,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:40:42,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:40:42,602 INFO L87 Difference]: Start difference. First operand 733 states and 1177 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) [2021-11-25 19:40:43,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:43,061 INFO L93 Difference]: Finished difference Result 804 states and 1289 transitions. [2021-11-25 19:40:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:40:43,062 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 [2021-11-25 19:40:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:43,072 INFO L225 Difference]: With dead ends: 804 [2021-11-25 19:40:43,072 INFO L226 Difference]: Without dead ends: 789 [2021-11-25 19:40:43,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:40:43,085 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 677 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:43,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1464 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:40:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-11-25 19:40:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 737. [2021-11-25 19:40:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 508 states have (on average 1.594488188976378) internal successors, (810), 541 states have internal predecessors, (810), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2021-11-25 19:40:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1181 transitions. [2021-11-25 19:40:43,179 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1181 transitions. Word has length 93 [2021-11-25 19:40:43,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:43,182 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1181 transitions. [2021-11-25 19:40:43,182 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) [2021-11-25 19:40:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1181 transitions. [2021-11-25 19:40:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 19:40:43,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:43,190 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] [2021-11-25 19:40:43,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:40:43,191 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:40:43,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash -222904570, now seen corresponding path program 1 times [2021-11-25 19:40:43,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:43,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076698775] [2021-11-25 19:40:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:43,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:40:43,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:43,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076698775] [2021-11-25 19:40:43,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076698775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:43,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:40:43,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:40:43,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343706848] [2021-11-25 19:40:43,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:43,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:40:43,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:43,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:40:43,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:40:43,427 INFO L87 Difference]: Start difference. First operand 737 states and 1181 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) [2021-11-25 19:40:43,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:43,578 INFO L93 Difference]: Finished difference Result 756 states and 1205 transitions. [2021-11-25 19:40:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:40:43,579 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 [2021-11-25 19:40:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:43,588 INFO L225 Difference]: With dead ends: 756 [2021-11-25 19:40:43,588 INFO L226 Difference]: Without dead ends: 741 [2021-11-25 19:40:43,593 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 [2021-11-25 19:40:43,602 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 30 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:43,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 2184 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:40:43,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-11-25 19:40:43,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 737. [2021-11-25 19:40:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 508 states have (on average 1.5905511811023623) internal successors, (808), 541 states have internal predecessors, (808), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2021-11-25 19:40:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1179 transitions. [2021-11-25 19:40:43,670 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1179 transitions. Word has length 98 [2021-11-25 19:40:43,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:43,676 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1179 transitions. [2021-11-25 19:40:43,677 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) [2021-11-25 19:40:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1179 transitions. [2021-11-25 19:40:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-25 19:40:43,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:43,683 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] [2021-11-25 19:40:43,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:40:43,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:40:43,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:43,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1031691049, now seen corresponding path program 1 times [2021-11-25 19:40:43,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:43,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002110773] [2021-11-25 19:40:43,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:43,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:40:44,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:44,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002110773] [2021-11-25 19:40:44,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002110773] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:40:44,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312438172] [2021-11-25 19:40:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:44,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:40:44,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:40:44,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:40:44,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:40:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:45,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:40:45,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:40:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 19:40:45,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:40:45,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312438172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:40:45,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:40:45,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [27] total 29 [2021-11-25 19:40:45,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609720792] [2021-11-25 19:40:45,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:40:45,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:40:45,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:40:45,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:40:45,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2021-11-25 19:40:45,392 INFO L87 Difference]: Start difference. First operand 737 states and 1179 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) [2021-11-25 19:40:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:40:45,564 INFO L93 Difference]: Finished difference Result 820 states and 1303 transitions. [2021-11-25 19:40:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:40:45,565 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 [2021-11-25 19:40:45,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:40:45,573 INFO L225 Difference]: With dead ends: 820 [2021-11-25 19:40:45,573 INFO L226 Difference]: Without dead ends: 805 [2021-11-25 19:40:45,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2021-11-25 19:40:45,575 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 44 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:40:45,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1717 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:40:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-11-25 19:40:45,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 741. [2021-11-25 19:40:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 512 states have (on average 1.5859375) internal successors, (812), 545 states have internal predecessors, (812), 185 states have call successors, (185), 43 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2021-11-25 19:40:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1183 transitions. [2021-11-25 19:40:45,628 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1183 transitions. Word has length 105 [2021-11-25 19:40:45,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:40:45,629 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 1183 transitions. [2021-11-25 19:40:45,629 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) [2021-11-25 19:40:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1183 transitions. [2021-11-25 19:40:45,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 19:40:45,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:40:45,633 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] [2021-11-25 19:40:45,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:40:45,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:40:45,848 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:40:45,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:40:45,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1311288589, now seen corresponding path program 1 times [2021-11-25 19:40:45,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:40:45,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863250070] [2021-11-25 19:40:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:45,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:40:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 19:40:46,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:40:46,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863250070] [2021-11-25 19:40:46,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863250070] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:40:46,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810236585] [2021-11-25 19:40:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:40:46,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:40:46,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:40:46,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:40:46,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c1928b2-72be-4e7f-861d-ca126e59e588/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:40:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:40:46,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-25 19:40:46,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:40:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:40:48,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:41:34,288 WARN L227 SmtUtils]: Spent 41.56s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 19:42:15,728 WARN L227 SmtUtils]: Spent 40.90s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 19:42:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-25 19:42:16,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810236585] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:42:16,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1563068569] [2021-11-25 19:42:16,504 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2021-11-25 19:42:16,504 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:42:16,509 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:42:16,513 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:42:16,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:42:36,687 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 530 for LOIs [2021-11-25 19:42:37,356 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 580 for LOIs [2021-11-25 19:45:46,802 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 580 for LOIs [2021-11-25 19:45:54,646 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 443 for LOIs [2021-11-25 19:45:56,598 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 493 for LOIs [2021-11-25 19:45:58,407 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 71 for LOIs [2021-11-25 19:45:58,424 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 83 for LOIs [2021-11-25 19:45:58,440 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 589 for LOIs [2021-11-25 19:46:01,915 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 487 for LOIs [2021-11-25 19:46:02,486 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 451 for LOIs [2021-11-25 19:46:03,379 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 445 for LOIs [2021-11-25 19:46:03,456 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 552 for LOIs [2021-11-25 19:46:06,023 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 825 for LOIs [2021-11-25 19:46:11,639 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 652 for LOIs [2021-11-25 19:46:12,065 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:46:30,324 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 652 DAG size of output: 584 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:46:37,885 WARN L227 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 692 DAG size of output: 597 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:46:44,353 WARN L227 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 671 DAG size of output: 609 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:46:50,868 WARN L227 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 671 DAG size of output: 609 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:47:02,513 WARN L227 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 825 DAG size of output: 678 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:47:10,646 WARN L227 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 832 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:50:14,314 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 572 DAG size of output: 515 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:50:50,272 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 587 DAG size of output: 526 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:50:58,412 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 585 DAG size of output: 524 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:52:14,348 WARN L227 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 620 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:52:31,715 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 655 DAG size of output: 550 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)