./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta --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 3c1ff6fd56cd2377d464f2b10cb9a0da8b8728fdfad0102577329687d925f1d9 --- 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-dbf71c6-m [2022-10-17 17:22:54,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:22:54,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:22:54,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:22:54,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:22:54,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:22:54,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:22:54,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:22:54,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:22:54,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:22:54,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:22:54,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:22:54,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:22:54,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:22:54,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:22:54,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:22:54,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:22:54,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:22:54,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:22:54,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:22:54,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:22:54,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:22:54,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:22:54,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:22:54,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:22:54,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:22:54,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:22:54,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:22:54,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:22:54,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:22:54,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:22:54,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:22:54,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:22:54,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:22:54,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:22:54,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:22:54,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:22:54,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:22:54,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:22:54,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:22:54,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:22:54,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:22:54,944 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:22:54,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:22:54,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:22:54,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:22:54,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:22:54,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:22:54,949 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:22:54,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:22:54,950 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:22:54,950 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:22:54,952 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:22:54,952 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:22:54,952 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:22:54,953 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:22:54,953 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:22:54,953 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:22:54,954 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:22:54,954 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:22:54,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:22:54,955 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:22:54,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:22:54,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:22:54,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:22:54,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:22:54,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:22:54,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:22:54,959 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:22:54,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:22:54,960 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:22:54,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:22:54,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:22:54,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:22:54,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:54,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:22:54,962 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:22:54,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:22:54,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:22:54,963 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:22:54,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:22:54,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:22:54,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:22:54,964 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_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c1ff6fd56cd2377d464f2b10cb9a0da8b8728fdfad0102577329687d925f1d9 [2022-10-17 17:22:55,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:22:55,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:22:55,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:22:55,305 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:22:55,306 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:22:55,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c [2022-10-17 17:22:55,395 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/data/0b75051df/f6a8e15373464543bc6f8fa393e1383e/FLAG0bd2f6a04 [2022-10-17 17:22:56,166 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:22:56,167 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c [2022-10-17 17:22:56,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/data/0b75051df/f6a8e15373464543bc6f8fa393e1383e/FLAG0bd2f6a04 [2022-10-17 17:22:56,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/data/0b75051df/f6a8e15373464543bc6f8fa393e1383e [2022-10-17 17:22:56,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:22:56,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:22:56,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:56,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:22:56,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:22:56,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:56" (1/1) ... [2022-10-17 17:22:56,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f25f6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:56, skipping insertion in model container [2022-10-17 17:22:56,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:56" (1/1) ... [2022-10-17 17:22:56,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:22:56,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:22:56,904 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_4741182f-53b0-41f4-9031-5f3133dc9080/sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c[35995,36008] [2022-10-17 17:22:57,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:22:57,067 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:22:57,151 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_4741182f-53b0-41f4-9031-5f3133dc9080/sv-benchmarks/c/product-lines/elevator_spec2_product23.cil.c[35995,36008] [2022-10-17 17:22:57,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:22:57,260 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:22:57,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57 WrapperNode [2022-10-17 17:22:57,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:57,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:22:57,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:22:57,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:22:57,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,412 INFO L138 Inliner]: procedures = 96, calls = 347, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 922 [2022-10-17 17:22:57,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:22:57,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:22:57,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:22:57,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:22:57,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,505 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:22:57,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:22:57,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:22:57,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:22:57,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (1/1) ... [2022-10-17 17:22:57,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:57,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:57,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:22:57,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4741182f-53b0-41f4-9031-5f3133dc9080/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:22:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:22:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-10-17 17:22:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-10-17 17:22:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-10-17 17:22:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-10-17 17:22:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-10-17 17:22:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-10-17 17:22:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-10-17 17:22:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-10-17 17:22:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-10-17 17:22:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-10-17 17:22:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-10-17 17:22:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-10-17 17:22:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-10-17 17:22:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-10-17 17:22:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-10-17 17:22:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-10-17 17:22:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-10-17 17:22:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-10-17 17:22:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-10-17 17:22:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-10-17 17:22:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-10-17 17:22:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-10-17 17:22:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-10-17 17:22:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-10-17 17:22:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-10-17 17:22:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-10-17 17:22:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-10-17 17:22:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-10-17 17:22:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-10-17 17:22:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-10-17 17:22:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-10-17 17:22:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-10-17 17:22:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-10-17 17:22:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-10-17 17:22:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-10-17 17:22:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-10-17 17:22:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-10-17 17:22:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-10-17 17:22:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-10-17 17:22:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-10-17 17:22:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:22:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-10-17 17:22:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-10-17 17:22:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-10-17 17:22:57,676 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-10-17 17:22:57,676 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-10-17 17:22:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-10-17 17:22:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-10-17 17:22:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-10-17 17:22:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-10-17 17:22:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-10-17 17:22:57,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:22:57,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:22:57,694 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-10-17 17:22:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-10-17 17:22:57,954 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:22:57,974 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:22:59,470 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:00,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:00,359 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:23:00,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:00 BoogieIcfgContainer [2022-10-17 17:23:00,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:00,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:00,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:00,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:00,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:22:56" (1/3) ... [2022-10-17 17:23:00,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357ec85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:00, skipping insertion in model container [2022-10-17 17:23:00,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:57" (2/3) ... [2022-10-17 17:23:00,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357ec85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:00, skipping insertion in model container [2022-10-17 17:23:00,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:00" (3/3) ... [2022-10-17 17:23:00,374 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product23.cil.c [2022-10-17 17:23:00,395 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:00,395 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:23:00,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:00,476 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;@7efd6dab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:00,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:23:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 397 states, 267 states have (on average 1.5767790262172285) internal successors, (421), 288 states have internal predecessors, (421), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2022-10-17 17:23:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-17 17:23:00,514 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:00,515 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-10-17 17:23:00,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:00,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:00,522 INFO L85 PathProgramCache]: Analyzing trace with hash -661733553, now seen corresponding path program 1 times [2022-10-17 17:23:00,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:00,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719518985] [2022-10-17 17:23:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:23:01,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:01,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719518985] [2022-10-17 17:23:01,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719518985] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:01,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:01,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:23:01,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194710045] [2022-10-17 17:23:01,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:01,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:23:01,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:23:01,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:23:01,187 INFO L87 Difference]: Start difference. First operand has 397 states, 267 states have (on average 1.5767790262172285) internal successors, (421), 288 states have internal predecessors, (421), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-17 17:23:01,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:01,362 INFO L93 Difference]: Finished difference Result 415 states and 652 transitions. [2022-10-17 17:23:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:23:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 77 [2022-10-17 17:23:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:01,385 INFO L225 Difference]: With dead ends: 415 [2022-10-17 17:23:01,385 INFO L226 Difference]: Without dead ends: 393 [2022-10-17 17:23:01,390 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 [2022-10-17 17:23:01,393 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:01,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 580 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:23:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-10-17 17:23:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-10-17 17:23:01,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 265 states have (on average 1.5660377358490567) internal successors, (415), 284 states have internal predecessors, (415), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-10-17 17:23:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 614 transitions. [2022-10-17 17:23:01,532 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 614 transitions. Word has length 77 [2022-10-17 17:23:01,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:01,538 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 614 transitions. [2022-10-17 17:23:01,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-17 17:23:01,538 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 614 transitions. [2022-10-17 17:23:01,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-17 17:23:01,556 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:01,556 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-10-17 17:23:01,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:23:01,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:01,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1854873761, now seen corresponding path program 1 times [2022-10-17 17:23:01,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:01,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515385387] [2022-10-17 17:23:01,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:01,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:23:02,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:02,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515385387] [2022-10-17 17:23:02,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515385387] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:02,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:02,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:23:02,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492158402] [2022-10-17 17:23:02,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:02,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:23:02,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:23:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:23:02,202 INFO L87 Difference]: Start difference. First operand 393 states and 614 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) [2022-10-17 17:23:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:04,871 INFO L93 Difference]: Finished difference Result 1210 states and 1921 transitions. [2022-10-17 17:23:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:23:04,872 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 78 [2022-10-17 17:23:04,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:04,884 INFO L225 Difference]: With dead ends: 1210 [2022-10-17 17:23:04,884 INFO L226 Difference]: Without dead ends: 833 [2022-10-17 17:23:04,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-10-17 17:23:04,899 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1185 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 2883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:04,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 1862 Invalid, 2883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [472 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 17:23:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-10-17 17:23:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 784. [2022-10-17 17:23:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 537 states have (on average 1.5772811918063314) internal successors, (847), 570 states have internal predecessors, (847), 198 states have call successors, (198), 48 states have call predecessors, (198), 48 states have return successors, (199), 190 states have call predecessors, (199), 193 states have call successors, (199) [2022-10-17 17:23:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1244 transitions. [2022-10-17 17:23:05,023 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1244 transitions. Word has length 78 [2022-10-17 17:23:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:05,026 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1244 transitions. [2022-10-17 17:23:05,027 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) [2022-10-17 17:23:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1244 transitions. [2022-10-17 17:23:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-10-17 17:23:05,035 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:05,035 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-10-17 17:23:05,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:23:05,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:05,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:05,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1982041739, now seen corresponding path program 1 times [2022-10-17 17:23:05,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:05,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370842891] [2022-10-17 17:23:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:05,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:23:05,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:05,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370842891] [2022-10-17 17:23:05,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370842891] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:05,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:05,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:23:05,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700456520] [2022-10-17 17:23:05,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:05,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:05,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:05,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:05,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:05,360 INFO L87 Difference]: Start difference. First operand 784 states and 1244 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:23:06,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:06,773 INFO L93 Difference]: Finished difference Result 2511 states and 4053 transitions. [2022-10-17 17:23:06,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:23:06,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 82 [2022-10-17 17:23:06,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:06,794 INFO L225 Difference]: With dead ends: 2511 [2022-10-17 17:23:06,794 INFO L226 Difference]: Without dead ends: 1743 [2022-10-17 17:23:06,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:06,807 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 1204 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:06,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 968 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-17 17:23:06,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2022-10-17 17:23:06,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1577. [2022-10-17 17:23:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1103 states have (on average 1.5874886672710788) internal successors, (1751), 1166 states have internal predecessors, (1751), 381 states have call successors, (381), 87 states have call predecessors, (381), 92 states have return successors, (399), 359 states have call predecessors, (399), 376 states have call successors, (399) [2022-10-17 17:23:06,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2531 transitions. [2022-10-17 17:23:06,959 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2531 transitions. Word has length 82 [2022-10-17 17:23:06,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:06,959 INFO L495 AbstractCegarLoop]: Abstraction has 1577 states and 2531 transitions. [2022-10-17 17:23:06,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:23:06,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2531 transitions. [2022-10-17 17:23:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-17 17:23:06,967 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:06,967 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-10-17 17:23:06,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:23:06,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:06,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:06,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1313901329, now seen corresponding path program 1 times [2022-10-17 17:23:06,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:06,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317208310] [2022-10-17 17:23:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:06,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:23:07,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:07,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317208310] [2022-10-17 17:23:07,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317208310] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:07,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:07,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:23:07,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873056994] [2022-10-17 17:23:07,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:07,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:07,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:07,355 INFO L87 Difference]: Start difference. First operand 1577 states and 2531 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:23:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:08,846 INFO L93 Difference]: Finished difference Result 4824 states and 7861 transitions. [2022-10-17 17:23:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:23:08,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 83 [2022-10-17 17:23:08,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:08,889 INFO L225 Difference]: With dead ends: 4824 [2022-10-17 17:23:08,889 INFO L226 Difference]: Without dead ends: 3264 [2022-10-17 17:23:08,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:08,908 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1195 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:08,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 972 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 17:23:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2022-10-17 17:23:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3051. [2022-10-17 17:23:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 2157 states have (on average 1.5938803894297635) internal successors, (3438), 2287 states have internal predecessors, (3438), 710 states have call successors, (710), 165 states have call predecessors, (710), 183 states have return successors, (788), 660 states have call predecessors, (788), 705 states have call successors, (788) [2022-10-17 17:23:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 4936 transitions. [2022-10-17 17:23:09,258 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 4936 transitions. Word has length 83 [2022-10-17 17:23:09,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:09,260 INFO L495 AbstractCegarLoop]: Abstraction has 3051 states and 4936 transitions. [2022-10-17 17:23:09,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:23:09,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 4936 transitions. [2022-10-17 17:23:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-17 17:23:09,263 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:09,263 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-10-17 17:23:09,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:23:09,264 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:09,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2076381193, now seen corresponding path program 1 times [2022-10-17 17:23:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:09,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774779899] [2022-10-17 17:23:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:09,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:23:09,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:09,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774779899] [2022-10-17 17:23:09,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774779899] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:09,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:09,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:23:09,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882899326] [2022-10-17 17:23:09,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:09,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:09,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:09,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:09,554 INFO L87 Difference]: Start difference. First operand 3051 states and 4936 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:23:11,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:11,199 INFO L93 Difference]: Finished difference Result 9292 states and 15353 transitions. [2022-10-17 17:23:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:23:11,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 84 [2022-10-17 17:23:11,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:11,301 INFO L225 Difference]: With dead ends: 9292 [2022-10-17 17:23:11,302 INFO L226 Difference]: Without dead ends: 6260 [2022-10-17 17:23:11,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:11,328 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 1178 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:11,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 985 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 17:23:11,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6260 states. [2022-10-17 17:23:11,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6260 to 5944. [2022-10-17 17:23:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 4220 states have (on average 1.5938388625592417) internal successors, (6726), 4490 states have internal predecessors, (6726), 1352 states have call successors, (1352), 321 states have call predecessors, (1352), 371 states have return successors, (1642), 1246 states have call predecessors, (1642), 1347 states have call successors, (1642) [2022-10-17 17:23:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 9720 transitions. [2022-10-17 17:23:11,951 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 9720 transitions. Word has length 84 [2022-10-17 17:23:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:11,952 INFO L495 AbstractCegarLoop]: Abstraction has 5944 states and 9720 transitions. [2022-10-17 17:23:11,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:23:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 9720 transitions. [2022-10-17 17:23:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-17 17:23:11,962 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:11,963 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-10-17 17:23:11,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:23:11,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash 56550705, now seen corresponding path program 1 times [2022-10-17 17:23:11,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:11,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221464863] [2022-10-17 17:23:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:11,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:23:12,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:12,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221464863] [2022-10-17 17:23:12,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221464863] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:12,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:12,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:23:12,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146514414] [2022-10-17 17:23:12,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:12,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:12,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:12,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:12,230 INFO L87 Difference]: Start difference. First operand 5944 states and 9720 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:23:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:14,532 INFO L93 Difference]: Finished difference Result 18081 states and 30624 transitions. [2022-10-17 17:23:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:23:14,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 85 [2022-10-17 17:23:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:14,672 INFO L225 Difference]: With dead ends: 18081 [2022-10-17 17:23:14,672 INFO L226 Difference]: Without dead ends: 12160 [2022-10-17 17:23:14,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:14,721 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 1165 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:14,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 997 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 17:23:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12160 states. [2022-10-17 17:23:16,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12160 to 11629. [2022-10-17 17:23:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11629 states, 8263 states have (on average 1.5904635120416313) internal successors, (13142), 8825 states have internal predecessors, (13142), 2606 states have call successors, (2606), 633 states have call predecessors, (2606), 759 states have return successors, (3648), 2388 states have call predecessors, (3648), 2601 states have call successors, (3648) [2022-10-17 17:23:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 19396 transitions. [2022-10-17 17:23:16,244 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 19396 transitions. Word has length 85 [2022-10-17 17:23:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:16,245 INFO L495 AbstractCegarLoop]: Abstraction has 11629 states and 19396 transitions. [2022-10-17 17:23:16,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:23:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 19396 transitions. [2022-10-17 17:23:16,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-17 17:23:16,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:16,251 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-10-17 17:23:16,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:23:16,251 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:16,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1752934009, now seen corresponding path program 1 times [2022-10-17 17:23:16,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:16,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273174563] [2022-10-17 17:23:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:16,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:23:16,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:16,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273174563] [2022-10-17 17:23:16,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273174563] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:16,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:16,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:23:16,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531226631] [2022-10-17 17:23:16,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:16,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:16,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:16,577 INFO L87 Difference]: Start difference. First operand 11629 states and 19396 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-17 17:23:20,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:20,005 INFO L93 Difference]: Finished difference Result 35450 states and 62872 transitions. [2022-10-17 17:23:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:23:20,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 86 [2022-10-17 17:23:20,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:20,187 INFO L225 Difference]: With dead ends: 35450 [2022-10-17 17:23:20,187 INFO L226 Difference]: Without dead ends: 23842 [2022-10-17 17:23:20,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:20,260 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 1156 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:20,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1012 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 17:23:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23842 states.