./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI --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 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:20:24,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:20:24,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:20:24,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:20:24,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:20:24,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:20:24,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:20:24,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:20:24,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:20:24,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:20:24,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:20:24,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:20:24,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:20:24,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:20:24,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:20:24,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:20:24,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:20:24,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:20:24,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:20:24,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:20:24,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:20:24,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:20:24,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:20:24,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:20:24,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:20:24,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:20:24,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:20:24,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:20:24,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:20:24,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:20:24,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:20:24,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:20:24,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:20:24,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:20:24,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:20:24,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:20:24,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:20:24,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:20:24,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:20:24,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:20:24,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:20:24,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:20:24,974 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:20:24,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:20:24,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:20:24,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:20:24,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:20:24,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:20:24,977 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:20:24,977 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:20:24,977 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:20:24,977 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:20:24,978 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:20:24,978 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:20:24,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:20:24,979 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:20:24,987 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:20:24,988 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:20:24,988 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:20:24,988 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:20:24,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:20:24,989 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:20:24,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:20:24,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:20:24,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:20:24,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:20:24,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:20:24,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:20:24,991 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:20:24,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:20:24,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:20:24,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:20:24,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:20:24,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:20:24,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:24,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:20:24,993 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:20:24,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:20:24,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:20:24,994 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:20:24,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:20:24,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:20:24,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:20:24,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 [2022-11-03 02:20:25,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:20:25,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:20:25,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:20:25,308 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:20:25,309 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:20:25,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2022-11-03 02:20:25,381 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/data/542658e77/eec34ea54e6444d699081941d7d30da9/FLAGeffbd0c70 [2022-11-03 02:20:26,035 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:20:26,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2022-11-03 02:20:26,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/data/542658e77/eec34ea54e6444d699081941d7d30da9/FLAGeffbd0c70 [2022-11-03 02:20:26,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/data/542658e77/eec34ea54e6444d699081941d7d30da9 [2022-11-03 02:20:26,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:20:26,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:20:26,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:26,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:20:26,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:20:26,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:26" (1/1) ... [2022-11-03 02:20:26,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de9301a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:26, skipping insertion in model container [2022-11-03 02:20:26,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:26" (1/1) ... [2022-11-03 02:20:26,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:20:26,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:20:26,525 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_6f340dd6-6dfc-4d12-960f-4b8775534497/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-11-03 02:20:26,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:26,846 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:20:26,859 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_6f340dd6-6dfc-4d12-960f-4b8775534497/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-11-03 02:20:26,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:27,017 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:20:27,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27 WrapperNode [2022-11-03 02:20:27,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:27,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:27,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:20:27,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:20:27,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,164 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 806 [2022-11-03 02:20:27,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:27,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:20:27,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:20:27,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:20:27,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:20:27,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:20:27,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:20:27,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:20:27,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (1/1) ... [2022-11-03 02:20:27,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:27,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:27,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:20:27,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:20:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-03 02:20:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-03 02:20:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:20:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-03 02:20:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-03 02:20:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-03 02:20:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-03 02:20:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-03 02:20:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-03 02:20:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-03 02:20:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-03 02:20:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-03 02:20:27,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-03 02:20:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 02:20:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 02:20:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 02:20:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 02:20:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-03 02:20:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-03 02:20:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-03 02:20:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-03 02:20:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-03 02:20:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-03 02:20:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-03 02:20:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-03 02:20:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-03 02:20:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-03 02:20:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-03 02:20:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-03 02:20:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-03 02:20:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-03 02:20:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-03 02:20:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-03 02:20:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-03 02:20:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-03 02:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-03 02:20:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-03 02:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2022-11-03 02:20:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2022-11-03 02:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-03 02:20:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-03 02:20:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-03 02:20:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-03 02:20:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-03 02:20:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-03 02:20:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:20:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:20:27,385 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-03 02:20:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-03 02:20:27,544 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:20:27,563 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:20:28,783 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:20:29,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:20:29,585 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:20:29,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:29 BoogieIcfgContainer [2022-11-03 02:20:29,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:20:29,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:20:29,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:20:29,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:20:29,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:20:26" (1/3) ... [2022-11-03 02:20:29,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0d2418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:29, skipping insertion in model container [2022-11-03 02:20:29,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:27" (2/3) ... [2022-11-03 02:20:29,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0d2418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:29, skipping insertion in model container [2022-11-03 02:20:29,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:29" (3/3) ... [2022-11-03 02:20:29,600 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.c [2022-11-03 02:20:29,619 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:20:29,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:20:29,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:20:29,717 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20131b1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:20:29,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:20:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 363 states, 244 states have (on average 1.610655737704918) internal successors, (393), 267 states have internal predecessors, (393), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-03 02:20:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 02:20:29,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:29,755 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:20:29,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:29,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash 876329650, now seen corresponding path program 1 times [2022-11-03 02:20:29,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:29,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225352430] [2022-11-03 02:20:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:29,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:20:30,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:30,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225352430] [2022-11-03 02:20:30,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225352430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:30,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:30,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:20:30,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894978711] [2022-11-03 02:20:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:30,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:20:30,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:30,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:20:30,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:20:30,333 INFO L87 Difference]: Start difference. First operand has 363 states, 244 states have (on average 1.610655737704918) internal successors, (393), 267 states have internal predecessors, (393), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 02:20:30,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:30,546 INFO L93 Difference]: Finished difference Result 381 states and 608 transitions. [2022-11-03 02:20:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:20:30,549 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 50 [2022-11-03 02:20:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:30,580 INFO L225 Difference]: With dead ends: 381 [2022-11-03 02:20:30,580 INFO L226 Difference]: Without dead ends: 359 [2022-11-03 02:20:30,584 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:20:30,588 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:30,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 539 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-03 02:20:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2022-11-03 02:20:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 242 states have (on average 1.5991735537190082) internal successors, (387), 263 states have internal predecessors, (387), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-03 02:20:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 570 transitions. [2022-11-03 02:20:30,709 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 570 transitions. Word has length 50 [2022-11-03 02:20:30,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:30,714 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 570 transitions. [2022-11-03 02:20:30,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-03 02:20:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 570 transitions. [2022-11-03 02:20:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 02:20:30,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:30,727 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:20:30,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:20:30,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:30,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2100243943, now seen corresponding path program 1 times [2022-11-03 02:20:30,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:30,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500383328] [2022-11-03 02:20:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:30,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:20:31,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:31,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500383328] [2022-11-03 02:20:31,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500383328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:31,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:31,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:31,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296506823] [2022-11-03 02:20:31,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:31,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:31,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:31,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:31,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:31,533 INFO L87 Difference]: Start difference. First operand 359 states and 570 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 02:20:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:33,691 INFO L93 Difference]: Finished difference Result 1163 states and 1893 transitions. [2022-11-03 02:20:33,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:20:33,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2022-11-03 02:20:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:33,699 INFO L225 Difference]: With dead ends: 1163 [2022-11-03 02:20:33,700 INFO L226 Difference]: Without dead ends: 827 [2022-11-03 02:20:33,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:33,705 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1168 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:33,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 1147 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 02:20:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-03 02:20:33,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 740. [2022-11-03 02:20:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 524 states have (on average 1.6278625954198473) internal successors, (853), 554 states have internal predecessors, (853), 177 states have call successors, (177), 37 states have call predecessors, (177), 38 states have return successors, (179), 161 states have call predecessors, (179), 172 states have call successors, (179) [2022-11-03 02:20:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1209 transitions. [2022-11-03 02:20:33,776 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1209 transitions. Word has length 51 [2022-11-03 02:20:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:33,778 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1209 transitions. [2022-11-03 02:20:33,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 02:20:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1209 transitions. [2022-11-03 02:20:33,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:20:33,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:33,787 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:20:33,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:20:33,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:33,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1548976327, now seen corresponding path program 1 times [2022-11-03 02:20:33,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:33,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282793848] [2022-11-03 02:20:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:33,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:20:34,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:34,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282793848] [2022-11-03 02:20:34,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282793848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:34,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:34,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:20:34,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985595908] [2022-11-03 02:20:34,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:34,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:20:34,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:20:34,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:34,419 INFO L87 Difference]: Start difference. First operand 740 states and 1209 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-03 02:20:36,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:36,987 INFO L93 Difference]: Finished difference Result 2506 states and 4147 transitions. [2022-11-03 02:20:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:20:36,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 73 [2022-11-03 02:20:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:37,003 INFO L225 Difference]: With dead ends: 2506 [2022-11-03 02:20:37,003 INFO L226 Difference]: Without dead ends: 1790 [2022-11-03 02:20:37,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:20:37,009 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1642 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:37,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 2081 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:20:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-11-03 02:20:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1703. [2022-11-03 02:20:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1236 states have (on average 1.6472491909385114) internal successors, (2036), 1296 states have internal predecessors, (2036), 379 states have call successors, (379), 76 states have call predecessors, (379), 87 states have return successors, (406), 354 states have call predecessors, (406), 374 states have call successors, (406) [2022-11-03 02:20:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2821 transitions. [2022-11-03 02:20:37,159 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2821 transitions. Word has length 73 [2022-11-03 02:20:37,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:37,159 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 2821 transitions. [2022-11-03 02:20:37,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-03 02:20:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2821 transitions. [2022-11-03 02:20:37,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 02:20:37,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:37,163 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:20:37,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:20:37,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:37,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:37,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1645507638, now seen corresponding path program 1 times [2022-11-03 02:20:37,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:37,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822526614] [2022-11-03 02:20:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:37,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:20:37,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:37,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822526614] [2022-11-03 02:20:37,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822526614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:37,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:37,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:20:37,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008276678] [2022-11-03 02:20:37,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:37,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:37,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:37,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:37,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:37,462 INFO L87 Difference]: Start difference. First operand 1703 states and 2821 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:20:37,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:37,690 INFO L93 Difference]: Finished difference Result 2741 states and 4549 transitions. [2022-11-03 02:20:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:20:37,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-03 02:20:37,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:37,704 INFO L225 Difference]: With dead ends: 2741 [2022-11-03 02:20:37,704 INFO L226 Difference]: Without dead ends: 1743 [2022-11-03 02:20:37,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:37,711 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 7 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:37,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2117 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:37,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2022-11-03 02:20:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1727. [2022-11-03 02:20:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1254 states have (on average 1.6379585326953747) internal successors, (2054), 1314 states have internal predecessors, (2054), 379 states have call successors, (379), 76 states have call predecessors, (379), 93 states have return successors, (418), 360 states have call predecessors, (418), 374 states have call successors, (418) [2022-11-03 02:20:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2851 transitions. [2022-11-03 02:20:37,835 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2851 transitions. Word has length 77 [2022-11-03 02:20:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:37,839 INFO L495 AbstractCegarLoop]: Abstraction has 1727 states and 2851 transitions. [2022-11-03 02:20:37,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:20:37,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2851 transitions. [2022-11-03 02:20:37,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:20:37,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:37,843 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:20:37,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:20:37,844 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash -465866647, now seen corresponding path program 1 times [2022-11-03 02:20:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:37,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484852617] [2022-11-03 02:20:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:20:38,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:38,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484852617] [2022-11-03 02:20:38,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484852617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:38,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:38,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:20:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354760677] [2022-11-03 02:20:38,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:38,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:20:38,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:38,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:20:38,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:38,268 INFO L87 Difference]: Start difference. First operand 1727 states and 2851 transitions. Second operand has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-03 02:20:41,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:41,515 INFO L93 Difference]: Finished difference Result 4741 states and 7847 transitions. [2022-11-03 02:20:41,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:20:41,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 80 [2022-11-03 02:20:41,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:41,536 INFO L225 Difference]: With dead ends: 4741 [2022-11-03 02:20:41,536 INFO L226 Difference]: Without dead ends: 3037 [2022-11-03 02:20:41,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:20:41,550 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1268 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3811 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 4474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:41,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 2365 Invalid, 4474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3811 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 02:20:41,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2022-11-03 02:20:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2832. [2022-11-03 02:20:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2025 states have (on average 1.6246913580246913) internal successors, (3290), 2128 states have internal predecessors, (3290), 660 states have call successors, (660), 112 states have call predecessors, (660), 146 states have return successors, (725), 636 states have call predecessors, (725), 655 states have call successors, (725) [2022-11-03 02:20:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 4675 transitions. [2022-11-03 02:20:41,803 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 4675 transitions. Word has length 80 [2022-11-03 02:20:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:41,803 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 4675 transitions. [2022-11-03 02:20:41,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-03 02:20:41,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 4675 transitions. [2022-11-03 02:20:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 02:20:41,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:41,806 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:20:41,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:20:41,807 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:41,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:41,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1283813090, now seen corresponding path program 1 times [2022-11-03 02:20:41,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:41,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387353440] [2022-11-03 02:20:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:20:42,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:42,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387353440] [2022-11-03 02:20:42,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387353440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:42,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:42,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:20:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838400485] [2022-11-03 02:20:42,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:42,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:20:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:20:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:20:42,270 INFO L87 Difference]: Start difference. First operand 2832 states and 4675 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-03 02:20:44,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:44,813 INFO L93 Difference]: Finished difference Result 7042 states and 11647 transitions. [2022-11-03 02:20:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:20:44,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 81 [2022-11-03 02:20:44,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:44,846 INFO L225 Difference]: With dead ends: 7042 [2022-11-03 02:20:44,846 INFO L226 Difference]: Without dead ends: 4725 [2022-11-03 02:20:44,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:20:44,865 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 1946 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:44,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 1704 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [819 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 02:20:44,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4725 states. [2022-11-03 02:20:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4725 to 4590. [2022-11-03 02:20:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 3214 states have (on average 1.5821406347230864) internal successors, (5085), 3395 states have internal predecessors, (5085), 1116 states have call successors, (1116), 199 states have call predecessors, (1116), 259 states have return successors, (1252), 1073 states have call predecessors, (1252), 1111 states have call successors, (1252) [2022-11-03 02:20:45,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 7453 transitions. [2022-11-03 02:20:45,323 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 7453 transitions. Word has length 81 [2022-11-03 02:20:45,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:45,324 INFO L495 AbstractCegarLoop]: Abstraction has 4590 states and 7453 transitions. [2022-11-03 02:20:45,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-03 02:20:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 7453 transitions. [2022-11-03 02:20:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 02:20:45,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:45,330 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:20:45,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:20:45,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash -700043480, now seen corresponding path program 1 times [2022-11-03 02:20:45,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:45,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91007934] [2022-11-03 02:20:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:45,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:20:45,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:45,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91007934] [2022-11-03 02:20:45,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91007934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:45,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:45,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 02:20:45,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056551263] [2022-11-03 02:20:45,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:45,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:20:45,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:45,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:20:45,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:20:45,905 INFO L87 Difference]: Start difference. First operand 4590 states and 7453 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-03 02:20:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:50,649 INFO L93 Difference]: Finished difference Result 9423 states and 15539 transitions. [2022-11-03 02:20:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:20:50,650 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 84 [2022-11-03 02:20:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:50,689 INFO L225 Difference]: With dead ends: 9423 [2022-11-03 02:20:50,689 INFO L226 Difference]: Without dead ends: 4808 [2022-11-03 02:20:50,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:20:50,720 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 2043 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 5305 mSolverCounterSat, 1177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 6482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1177 IncrementalHoareTripleChecker+Valid, 5305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:50,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2061 Valid, 3585 Invalid, 6482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1177 Valid, 5305 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 02:20:50,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2022-11-03 02:20:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4626. [2022-11-03 02:20:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 3239 states have (on average 1.54492127199753) internal successors, (5004), 3420 states have internal predecessors, (5004), 1121 states have call successors, (1121), 205 states have call predecessors, (1121), 265 states have return successors, (1257), 1077 states have call predecessors, (1257), 1116 states have call successors, (1257) [2022-11-03 02:20:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 7382 transitions. [2022-11-03 02:20:51,192 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 7382 transitions. Word has length 84 [2022-11-03 02:20:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:51,193 INFO L495 AbstractCegarLoop]: Abstraction has 4626 states and 7382 transitions. [2022-11-03 02:20:51,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-03 02:20:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 7382 transitions. [2022-11-03 02:20:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:20:51,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:51,196 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:20:51,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:20:51,196 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:51,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2127766921, now seen corresponding path program 1 times [2022-11-03 02:20:51,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:51,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52234714] [2022-11-03 02:20:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:51,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:20:51,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:51,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52234714] [2022-11-03 02:20:51,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52234714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:51,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:51,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:20:51,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780955553] [2022-11-03 02:20:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:51,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:20:51,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:51,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:20:51,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:51,601 INFO L87 Difference]: Start difference. First operand 4626 states and 7382 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 02:20:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:53,819 INFO L93 Difference]: Finished difference Result 9171 states and 14674 transitions. [2022-11-03 02:20:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:20:53,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 86 [2022-11-03 02:20:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:53,858 INFO L225 Difference]: With dead ends: 9171 [2022-11-03 02:20:53,858 INFO L226 Difference]: Without dead ends: 5174 [2022-11-03 02:20:53,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:20:53,878 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 917 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:53,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1804 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 02:20:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5174 states. [2022-11-03 02:20:54,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5174 to 4716. [2022-11-03 02:20:54,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4716 states, 3299 states have (on average 1.5392543194907549) internal successors, (5078), 3494 states have internal predecessors, (5078), 1123 states have call successors, (1123), 221 states have call predecessors, (1123), 293 states have return successors, (1295), 1077 states have call predecessors, (1295), 1118 states have call successors, (1295) [2022-11-03 02:20:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4716 states to 4716 states and 7496 transitions. [2022-11-03 02:20:54,320 INFO L78 Accepts]: Start accepts. Automaton has 4716 states and 7496 transitions. Word has length 86 [2022-11-03 02:20:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:54,321 INFO L495 AbstractCegarLoop]: Abstraction has 4716 states and 7496 transitions. [2022-11-03 02:20:54,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 02:20:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4716 states and 7496 transitions. [2022-11-03 02:20:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 02:20:54,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:54,324 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:20:54,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:20:54,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:54,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1965610984, now seen corresponding path program 1 times [2022-11-03 02:20:54,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:54,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616323507] [2022-11-03 02:20:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:54,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:20:54,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:54,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616323507] [2022-11-03 02:20:54,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616323507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:54,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:54,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:54,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330942475] [2022-11-03 02:20:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:54,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:20:54,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:54,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:20:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:20:54,670 INFO L87 Difference]: Start difference. First operand 4716 states and 7496 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-11-03 02:20:55,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:55,497 INFO L93 Difference]: Finished difference Result 4818 states and 7662 transitions. [2022-11-03 02:20:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:20:55,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 [2022-11-03 02:20:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:55,538 INFO L225 Difference]: With dead ends: 4818 [2022-11-03 02:20:55,539 INFO L226 Difference]: Without dead ends: 4803 [2022-11-03 02:20:55,543 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:20:55,544 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 652 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1389 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 [2022-11-03 02:20:55,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1389 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:20:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2022-11-03 02:20:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 4722. [2022-11-03 02:20:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 3305 states have (on average 1.5382753403933433) internal successors, (5084), 3500 states have internal predecessors, (5084), 1123 states have call successors, (1123), 221 states have call predecessors, (1123), 293 states have return successors, (1295), 1077 states have call predecessors, (1295), 1118 states have call successors, (1295) [2022-11-03 02:20:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 7502 transitions. [2022-11-03 02:20:56,029 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 7502 transitions. Word has length 93 [2022-11-03 02:20:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:56,029 INFO L495 AbstractCegarLoop]: Abstraction has 4722 states and 7502 transitions. [2022-11-03 02:20:56,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-11-03 02:20:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 7502 transitions. [2022-11-03 02:20:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 02:20:56,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:56,033 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:20:56,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:20:56,034 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:56,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:56,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1156870582, now seen corresponding path program 1 times [2022-11-03 02:20:56,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:56,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462343370] [2022-11-03 02:20:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:56,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:20:56,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:56,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462343370] [2022-11-03 02:20:56,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462343370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:56,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:56,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 02:20:56,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095416124] [2022-11-03 02:20:56,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:56,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:20:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:20:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:20:56,626 INFO L87 Difference]: Start difference. First operand 4722 states and 7502 transitions. Second operand has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-03 02:21:01,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:01,947 INFO L93 Difference]: Finished difference Result 5298 states and 8396 transitions. [2022-11-03 02:21:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-03 02:21:01,948 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 95 [2022-11-03 02:21:01,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:01,972 INFO L225 Difference]: With dead ends: 5298 [2022-11-03 02:21:01,973 INFO L226 Difference]: Without dead ends: 5281 [2022-11-03 02:21:01,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 02:21:01,977 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 2550 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 6963 mSolverCounterSat, 1480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2573 SdHoareTripleChecker+Valid, 3976 SdHoareTripleChecker+Invalid, 8443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1480 IncrementalHoareTripleChecker+Valid, 6963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:01,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2573 Valid, 3976 Invalid, 8443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1480 Valid, 6963 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 02:21:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2022-11-03 02:21:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5004. [2022-11-03 02:21:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 3531 states have (on average 1.5465873690172756) internal successors, (5461), 3724 states have internal predecessors, (5461), 1142 states have call successors, (1142), 259 states have call predecessors, (1142), 330 states have return successors, (1318), 1097 states have call predecessors, (1318), 1137 states have call successors, (1318) [2022-11-03 02:21:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 7921 transitions. [2022-11-03 02:21:02,402 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 7921 transitions. Word has length 95 [2022-11-03 02:21:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:02,403 INFO L495 AbstractCegarLoop]: Abstraction has 5004 states and 7921 transitions. [2022-11-03 02:21:02,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-03 02:21:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 7921 transitions. [2022-11-03 02:21:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 02:21:02,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:02,407 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-03 02:21:02,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:21:02,408 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash -967463117, now seen corresponding path program 1 times [2022-11-03 02:21:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:02,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306760596] [2022-11-03 02:21:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:02,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:21:03,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:03,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306760596] [2022-11-03 02:21:03,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306760596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:03,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316520483] [2022-11-03 02:21:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:03,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:03,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:03,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:03,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f340dd6-6dfc-4d12-960f-4b8775534497/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:21:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:04,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2044 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:21:04,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:21:06,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:21:10,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316520483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:10,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1184809121] [2022-11-03 02:21:10,378 INFO L159 IcfgInterpreter]: Started Sifa with 93 locations of interest [2022-11-03 02:21:10,379 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:21:10,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:21:10,387 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:21:10,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:21:17,265 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 592 for LOIs [2022-11-03 02:22:19,395 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 592 for LOIs [2022-11-03 02:22:25,370 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 443 for LOIs [2022-11-03 02:22:25,435 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 597 for LOIs [2022-11-03 02:22:28,816 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__weight with input of size 577 for LOIs [2022-11-03 02:22:30,577 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 89 for LOIs [2022-11-03 02:22:30,819 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 52 for LOIs [2022-11-03 02:22:30,833 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 450 for LOIs [2022-11-03 02:22:31,111 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 85 for LOIs [2022-11-03 02:22:31,222 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 103 for LOIs [2022-11-03 02:22:31,241 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 560 for LOIs [2022-11-03 02:22:33,671 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 837 for LOIs [2022-11-03 02:23:52,179 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 664 for LOIs [2022-11-03 02:23:52,655 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:24:12,604 WARN L234 SmtUtils]: Spent 11.57s on a formula simplification. DAG size of input: 664 DAG size of output: 525 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:25,524 WARN L234 SmtUtils]: Spent 12.18s on a formula simplification. DAG size of input: 704 DAG size of output: 539 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:33,544 WARN L234 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 679 DAG size of output: 617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:41,598 WARN L234 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 679 DAG size of output: 617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:04,836 WARN L234 SmtUtils]: Spent 21.85s on a formula simplification. DAG size of input: 837 DAG size of output: 688 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:23,827 WARN L234 SmtUtils]: Spent 17.92s on a formula simplification. DAG size of input: 912 DAG size of output: 813 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:26:00,203 WARN L234 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 634 DAG size of output: 604 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:26:06,430 WARN L234 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 634 DAG size of output: 605 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:26:42,525 WARN L234 SmtUtils]: Spent 12.53s on a formula simplification. DAG size of input: 533 DAG size of output: 488 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:26:55,615 WARN L234 SmtUtils]: Spent 11.81s on a formula simplification. DAG size of input: 545 DAG size of output: 490 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:08,739 WARN L234 SmtUtils]: Spent 11.86s on a formula simplification. DAG size of input: 547 DAG size of output: 492 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:21,954 WARN L234 SmtUtils]: Spent 11.89s on a formula simplification. DAG size of input: 549 DAG size of output: 494 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:35,340 WARN L234 SmtUtils]: Spent 11.98s on a formula simplification. DAG size of input: 551 DAG size of output: 496 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:48,917 WARN L234 SmtUtils]: Spent 12.10s on a formula simplification. DAG size of input: 553 DAG size of output: 498 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:02,458 WARN L234 SmtUtils]: Spent 12.05s on a formula simplification. DAG size of input: 555 DAG size of output: 500 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:16,693 WARN L234 SmtUtils]: Spent 12.88s on a formula simplification. DAG size of input: 526 DAG size of output: 490 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:31,175 WARN L234 SmtUtils]: Spent 12.95s on a formula simplification. DAG size of input: 528 DAG size of output: 489 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:45,771 WARN L234 SmtUtils]: Spent 12.99s on a formula simplification. DAG size of input: 531 DAG size of output: 492 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:57,917 WARN L234 SmtUtils]: Spent 9.12s on a formula simplification. DAG size of input: 450 DAG size of output: 437 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:08,586 WARN L234 SmtUtils]: Spent 9.25s on a formula simplification. DAG size of input: 454 DAG size of output: 441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:23,821 WARN L234 SmtUtils]: Spent 13.53s on a formula simplification. DAG size of input: 540 DAG size of output: 496 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:36,349 WARN L234 SmtUtils]: Spent 10.70s on a formula simplification. DAG size of input: 540 DAG size of output: 479 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:51,683 WARN L234 SmtUtils]: Spent 13.43s on a formula simplification. DAG size of input: 543 DAG size of output: 493 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:06,374 WARN L234 SmtUtils]: Spent 12.69s on a formula simplification. DAG size of input: 546 DAG size of output: 493 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:21,305 WARN L234 SmtUtils]: Spent 12.83s on a formula simplification. DAG size of input: 552 DAG size of output: 499 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:36,907 WARN L234 SmtUtils]: Spent 13.40s on a formula simplification. DAG size of input: 568 DAG size of output: 509 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:36,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1184809121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:36,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:30:36,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [11, 12, 12] total 90 [2022-11-03 02:30:36,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89658459] [2022-11-03 02:30:36,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:36,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-03 02:30:36,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-03 02:30:36,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=7396, Unknown=0, NotChecked=0, Total=8010 [2022-11-03 02:30:36,919 INFO L87 Difference]: Start difference. First operand 5004 states and 7921 transitions. Second operand has 64 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 41 states have internal predecessors, (60), 18 states have call successors, (19), 13 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-03 02:30:46,285 WARN L234 SmtUtils]: Spent 8.59s on a formula simplification. DAG size of input: 646 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:55,384 WARN L234 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 658 DAG size of output: 607 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:02,429 WARN L234 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 752 DAG size of output: 647 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:10,247 WARN L234 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 609 DAG size of output: 563 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:17,600 WARN L234 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 621 DAG size of output: 570 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:33,202 WARN L234 SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 810 DAG size of output: 584 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:39,551 WARN L234 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 615 DAG size of output: 596 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:45,847 WARN L234 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 610 DAG size of output: 595 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:51,569 WARN L234 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 622 DAG size of output: 607 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:31:58,084 WARN L234 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 657 DAG size of output: 629 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:32:40,256 WARN L234 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 444 DAG size of output: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:32:49,241 WARN L234 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 457 DAG size of output: 452 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)