./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh --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 d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 --- 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-2329fc7 [2022-12-14 05:33:53,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:33:53,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:33:53,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:33:53,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:33:53,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:33:53,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:33:53,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:33:53,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:33:53,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:33:53,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:33:53,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:33:53,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:33:53,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:33:53,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:33:53,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:33:53,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:33:53,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:33:53,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:33:53,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:33:53,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:33:53,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:33:53,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:33:53,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:33:53,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:33:53,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:33:53,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:33:53,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:33:53,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:33:53,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:33:53,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:33:53,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:33:53,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:33:53,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:33:53,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:33:53,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:33:53,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:33:53,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:33:53,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:33:53,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:33:53,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:33:53,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:33:53,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:33:53,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:33:53,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:33:53,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:33:53,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:33:53,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:33:53,360 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:33:53,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:33:53,360 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:33:53,360 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:33:53,360 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:33:53,360 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:33:53,361 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:33:53,361 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:33:53,361 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:33:53,361 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:33:53,361 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:33:53,361 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:33:53,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:33:53,362 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:33:53,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:33:53,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:33:53,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:33:53,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:33:53,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:33:53,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:33:53,362 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:33:53,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:33:53,363 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:33:53,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:33:53,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:33:53,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:33:53,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:33:53,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:33:53,363 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:33:53,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:33:53,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:33:53,364 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:33:53,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:33:53,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:33:53,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:33:53,364 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_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 [2022-12-14 05:33:53,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:33:53,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:33:53,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:33:53,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:33:53,547 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:33:53,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2022-12-14 05:33:56,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:33:56,403 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:33:56,404 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2022-12-14 05:33:56,416 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/data/63dfed641/fba225d81e7a49b2b36c28c09b5b5339/FLAG726034fbb [2022-12-14 05:33:56,426 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/data/63dfed641/fba225d81e7a49b2b36c28c09b5b5339 [2022-12-14 05:33:56,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:33:56,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:33:56,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:33:56,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:33:56,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:33:56,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:56,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e7e371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56, skipping insertion in model container [2022-12-14 05:33:56,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:56,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:33:56,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:33:56,700 WARN L237 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_fd6493ed-78b0-4fe8-88c4-74de3baf8581/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2022-12-14 05:33:56,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:33:56,796 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:33:56,839 WARN L237 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_fd6493ed-78b0-4fe8-88c4-74de3baf8581/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2022-12-14 05:33:56,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:33:56,891 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:33:56,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56 WrapperNode [2022-12-14 05:33:56,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:33:56,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:33:56,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:33:56,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:33:56,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:56,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:56,974 INFO L138 Inliner]: procedures = 94, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1119 [2022-12-14 05:33:56,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:33:56,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:33:56,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:33:56,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:33:56,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:56,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:56,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:56,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:57,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:57,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:57,022 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:57,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:57,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:33:57,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:33:57,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:33:57,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:33:57,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (1/1) ... [2022-12-14 05:33:57,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:33:57,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:57,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:33:57,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:33:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:33:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 05:33:57,092 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 05:33:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-14 05:33:57,092 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-14 05:33:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-12-14 05:33:57,093 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-12-14 05:33:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 05:33:57,093 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 05:33:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-12-14 05:33:57,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-12-14 05:33:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 05:33:57,093 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 05:33:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 05:33:57,093 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 05:33:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 05:33:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 05:33:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 05:33:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 05:33:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-14 05:33:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-14 05:33:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 05:33:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 05:33:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 05:33:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 05:33:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 05:33:57,095 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 05:33:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 05:33:57,095 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 05:33:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-14 05:33:57,095 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-14 05:33:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 05:33:57,095 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 05:33:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 05:33:57,095 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 05:33:57,096 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 05:33:57,096 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 05:33:57,096 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 05:33:57,096 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 05:33:57,096 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 05:33:57,096 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 05:33:57,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:33:57,096 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 05:33:57,096 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 05:33:57,096 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 05:33:57,097 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 05:33:57,097 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 05:33:57,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 05:33:57,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:33:57,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:33:57,097 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 05:33:57,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 05:33:57,215 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:33:57,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:33:57,975 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:33:58,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:33:58,436 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:33:58,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:33:58 BoogieIcfgContainer [2022-12-14 05:33:58,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:33:58,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:33:58,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:33:58,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:33:58,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:33:56" (1/3) ... [2022-12-14 05:33:58,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9857c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:33:58, skipping insertion in model container [2022-12-14 05:33:58,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:56" (2/3) ... [2022-12-14 05:33:58,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9857c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:33:58, skipping insertion in model container [2022-12-14 05:33:58,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:33:58" (3/3) ... [2022-12-14 05:33:58,446 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2022-12-14 05:33:58,465 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:33:58,465 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:33:58,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:33:58,548 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;@794c5ca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:33:58,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:33:58,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2022-12-14 05:33:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 05:33:58,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:58,571 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] [2022-12-14 05:33:58,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:58,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1930165229, now seen corresponding path program 1 times [2022-12-14 05:33:58,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:58,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513035341] [2022-12-14 05:33:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:58,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:33:58,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:58,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513035341] [2022-12-14 05:33:58,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513035341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:58,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:33:58,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:33:58,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554858224] [2022-12-14 05:33:58,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:58,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:33:58,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:33:58,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:33:58,861 INFO L87 Difference]: Start difference. First operand has 374 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) 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) [2022-12-14 05:33:58,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:58,984 INFO L93 Difference]: Finished difference Result 392 states and 621 transitions. [2022-12-14 05:33:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:33:58,986 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 [2022-12-14 05:33:58,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:59,001 INFO L225 Difference]: With dead ends: 392 [2022-12-14 05:33:59,002 INFO L226 Difference]: Without dead ends: 370 [2022-12-14 05:33:59,004 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 [2022-12-14 05:33:59,007 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:59,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 551 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:33:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-12-14 05:33:59,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-12-14 05:33:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 250 states have (on average 1.584) internal successors, (396), 269 states have internal predecessors, (396), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-14 05:33:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 583 transitions. [2022-12-14 05:33:59,071 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 583 transitions. Word has length 77 [2022-12-14 05:33:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:59,073 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 583 transitions. [2022-12-14 05:33:59,073 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) [2022-12-14 05:33:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 583 transitions. [2022-12-14 05:33:59,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 05:33:59,079 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:59,079 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] [2022-12-14 05:33:59,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:33:59,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:59,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:59,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1658029384, now seen corresponding path program 1 times [2022-12-14 05:33:59,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:59,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295222722] [2022-12-14 05:33:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:59,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:33:59,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:59,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295222722] [2022-12-14 05:33:59,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295222722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:59,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:33:59,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 05:33:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482126141] [2022-12-14 05:33:59,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:59,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:33:59,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:59,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:33:59,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:33:59,511 INFO L87 Difference]: Start difference. First operand 370 states and 583 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) [2022-12-14 05:34:01,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:01,152 INFO L93 Difference]: Finished difference Result 1141 states and 1828 transitions. [2022-12-14 05:34:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 05:34:01,153 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 [2022-12-14 05:34:01,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:01,159 INFO L225 Difference]: With dead ends: 1141 [2022-12-14 05:34:01,159 INFO L226 Difference]: Without dead ends: 787 [2022-12-14 05:34:01,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:34:01,164 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1146 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:01,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1606 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 05:34:01,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-12-14 05:34:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 738. [2022-12-14 05:34:01,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 507 states have (on average 1.5956607495069033) internal successors, (809), 540 states have internal predecessors, (809), 186 states have call successors, (186), 44 states have call predecessors, (186), 44 states have return successors, (187), 178 states have call predecessors, (187), 181 states have call successors, (187) [2022-12-14 05:34:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1182 transitions. [2022-12-14 05:34:01,232 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1182 transitions. Word has length 78 [2022-12-14 05:34:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:01,233 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1182 transitions. [2022-12-14 05:34:01,233 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) [2022-12-14 05:34:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1182 transitions. [2022-12-14 05:34:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 05:34:01,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:01,237 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] [2022-12-14 05:34:01,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:34:01,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:01,238 INFO L85 PathProgramCache]: Analyzing trace with hash -159709705, now seen corresponding path program 1 times [2022-12-14 05:34:01,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:01,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041019733] [2022-12-14 05:34:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:01,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:01,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:01,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041019733] [2022-12-14 05:34:01,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041019733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:01,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:01,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:34:01,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316267955] [2022-12-14 05:34:01,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:01,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:34:01,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:01,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:34:01,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:34:01,495 INFO L87 Difference]: Start difference. First operand 738 states and 1182 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 05:34:02,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:02,032 INFO L93 Difference]: Finished difference Result 809 states and 1294 transitions. [2022-12-14 05:34:02,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:02,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 82 [2022-12-14 05:34:02,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:02,037 INFO L225 Difference]: With dead ends: 809 [2022-12-14 05:34:02,037 INFO L226 Difference]: Without dead ends: 794 [2022-12-14 05:34:02,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:34:02,038 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 677 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:02,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1808 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 05:34:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-12-14 05:34:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 742. [2022-12-14 05:34:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 511 states have (on average 1.5909980430528377) internal successors, (813), 544 states have internal predecessors, (813), 186 states have call successors, (186), 44 states have call predecessors, (186), 44 states have return successors, (187), 178 states have call predecessors, (187), 181 states have call successors, (187) [2022-12-14 05:34:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1186 transitions. [2022-12-14 05:34:02,071 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1186 transitions. Word has length 82 [2022-12-14 05:34:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:02,072 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 1186 transitions. [2022-12-14 05:34:02,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 05:34:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1186 transitions. [2022-12-14 05:34:02,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 05:34:02,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:02,073 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, 1] [2022-12-14 05:34:02,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:34:02,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:02,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1465408731, now seen corresponding path program 1 times [2022-12-14 05:34:02,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:02,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924190399] [2022-12-14 05:34:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:02,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:34:02,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:02,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924190399] [2022-12-14 05:34:02,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924190399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:02,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:02,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:34:02,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684566564] [2022-12-14 05:34:02,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:02,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:34:02,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:02,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:34:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:34:02,204 INFO L87 Difference]: Start difference. First operand 742 states and 1186 transitions. Second operand has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-14 05:34:02,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:02,352 INFO L93 Difference]: Finished difference Result 761 states and 1210 transitions. [2022-12-14 05:34:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:34:02,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 87 [2022-12-14 05:34:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:02,357 INFO L225 Difference]: With dead ends: 761 [2022-12-14 05:34:02,358 INFO L226 Difference]: Without dead ends: 746 [2022-12-14 05:34:02,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:34:02,359 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 30 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:02,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2162 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:02,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-12-14 05:34:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 742. [2022-12-14 05:34:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 511 states have (on average 1.5870841487279843) internal successors, (811), 544 states have internal predecessors, (811), 186 states have call successors, (186), 44 states have call predecessors, (186), 44 states have return successors, (187), 178 states have call predecessors, (187), 181 states have call successors, (187) [2022-12-14 05:34:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1184 transitions. [2022-12-14 05:34:02,408 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1184 transitions. Word has length 87 [2022-12-14 05:34:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:02,409 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 1184 transitions. [2022-12-14 05:34:02,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-14 05:34:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1184 transitions. [2022-12-14 05:34:02,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 05:34:02,411 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:02,411 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 05:34:02,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:34:02,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:02,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:02,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1937578209, now seen corresponding path program 1 times [2022-12-14 05:34:02,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:02,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750945257] [2022-12-14 05:34:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:02,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:34:02,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:02,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750945257] [2022-12-14 05:34:02,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750945257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:02,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:02,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:34:02,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082741607] [2022-12-14 05:34:02,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:02,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:02,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:02,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:34:02,570 INFO L87 Difference]: Start difference. First operand 742 states and 1184 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 05:34:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:03,614 INFO L93 Difference]: Finished difference Result 2383 states and 3869 transitions. [2022-12-14 05:34:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:03,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 94 [2022-12-14 05:34:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:03,630 INFO L225 Difference]: With dead ends: 2383 [2022-12-14 05:34:03,630 INFO L226 Difference]: Without dead ends: 1657 [2022-12-14 05:34:03,632 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 [2022-12-14 05:34:03,633 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1157 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:03,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 703 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 05:34:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2022-12-14 05:34:03,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1491. [2022-12-14 05:34:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1049 states have (on average 1.5986653956148713) internal successors, (1677), 1112 states have internal predecessors, (1677), 357 states have call successors, (357), 79 states have call predecessors, (357), 84 states have return successors, (375), 335 states have call predecessors, (375), 352 states have call successors, (375) [2022-12-14 05:34:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2409 transitions. [2022-12-14 05:34:03,698 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2409 transitions. Word has length 94 [2022-12-14 05:34:03,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:03,698 INFO L495 AbstractCegarLoop]: Abstraction has 1491 states and 2409 transitions. [2022-12-14 05:34:03,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 05:34:03,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2409 transitions. [2022-12-14 05:34:03,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 05:34:03,700 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:03,700 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 05:34:03,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:34:03,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:03,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash -64756096, now seen corresponding path program 1 times [2022-12-14 05:34:03,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:03,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191089699] [2022-12-14 05:34:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:03,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:34:03,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:03,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191089699] [2022-12-14 05:34:03,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191089699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:03,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:03,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:34:03,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222362281] [2022-12-14 05:34:03,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:03,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:03,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:03,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:03,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:34:03,832 INFO L87 Difference]: Start difference. First operand 1491 states and 2409 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 05:34:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:04,947 INFO L93 Difference]: Finished difference Result 4562 states and 7487 transitions. [2022-12-14 05:34:04,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:04,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 95 [2022-12-14 05:34:04,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:04,968 INFO L225 Difference]: With dead ends: 4562 [2022-12-14 05:34:04,968 INFO L226 Difference]: Without dead ends: 3090 [2022-12-14 05:34:04,977 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 [2022-12-14 05:34:04,978 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1148 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:04,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 710 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 05:34:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2022-12-14 05:34:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2877. [2022-12-14 05:34:05,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2047 states have (on average 1.6062530532486565) internal successors, (3288), 2177 states have internal predecessors, (3288), 662 states have call successors, (662), 149 states have call predecessors, (662), 167 states have return successors, (740), 612 states have call predecessors, (740), 657 states have call successors, (740) [2022-12-14 05:34:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4690 transitions. [2022-12-14 05:34:05,129 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4690 transitions. Word has length 95 [2022-12-14 05:34:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:05,130 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 4690 transitions. [2022-12-14 05:34:05,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 05:34:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4690 transitions. [2022-12-14 05:34:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 05:34:05,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:05,132 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 05:34:05,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 05:34:05,132 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:05,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2007573501, now seen corresponding path program 1 times [2022-12-14 05:34:05,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:05,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949099811] [2022-12-14 05:34:05,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:05,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:34:05,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:05,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949099811] [2022-12-14 05:34:05,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949099811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:05,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:05,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:34:05,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499262004] [2022-12-14 05:34:05,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:05,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:05,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:05,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:34:05,260 INFO L87 Difference]: Start difference. First operand 2877 states and 4690 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 05:34:06,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:06,595 INFO L93 Difference]: Finished difference Result 8762 states and 14599 transitions. [2022-12-14 05:34:06,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:06,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 96 [2022-12-14 05:34:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:06,619 INFO L225 Difference]: With dead ends: 8762 [2022-12-14 05:34:06,619 INFO L226 Difference]: Without dead ends: 5910 [2022-12-14 05:34:06,630 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 [2022-12-14 05:34:06,631 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1135 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:06,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 721 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 05:34:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5910 states. [2022-12-14 05:34:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 5594. [2022-12-14 05:34:06,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 3998 states have (on average 1.6068034017008503) internal successors, (6424), 4268 states have internal predecessors, (6424), 1256 states have call successors, (1256), 289 states have call predecessors, (1256), 339 states have return successors, (1546), 1150 states have call predecessors, (1546), 1251 states have call successors, (1546) [2022-12-14 05:34:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 9226 transitions. [2022-12-14 05:34:06,921 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 9226 transitions. Word has length 96 [2022-12-14 05:34:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:06,921 INFO L495 AbstractCegarLoop]: Abstraction has 5594 states and 9226 transitions. [2022-12-14 05:34:06,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 05:34:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 9226 transitions. [2022-12-14 05:34:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 05:34:06,923 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:06,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 05:34:06,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 05:34:06,923 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:06,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2105367006, now seen corresponding path program 1 times [2022-12-14 05:34:06,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:06,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686720739] [2022-12-14 05:34:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:06,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:34:07,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:07,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686720739] [2022-12-14 05:34:07,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686720739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:07,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:07,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:34:07,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952185073] [2022-12-14 05:34:07,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:07,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:07,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:07,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:34:07,067 INFO L87 Difference]: Start difference. First operand 5594 states and 9226 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 05:34:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:08,552 INFO L93 Difference]: Finished difference Result 17015 states and 29110 transitions. [2022-12-14 05:34:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:08,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 97 [2022-12-14 05:34:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:08,637 INFO L225 Difference]: With dead ends: 17015 [2022-12-14 05:34:08,637 INFO L226 Difference]: Without dead ends: 11458 [2022-12-14 05:34:08,666 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 [2022-12-14 05:34:08,667 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1122 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:08,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 730 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 05:34:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11458 states. [2022-12-14 05:34:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11458 to 10927. [2022-12-14 05:34:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10927 states, 7817 states have (on average 1.603684277855955) internal successors, (12536), 8379 states have internal predecessors, (12536), 2414 states have call successors, (2414), 569 states have call predecessors, (2414), 695 states have return successors, (3456), 2196 states have call predecessors, (3456), 2409 states have call successors, (3456) [2022-12-14 05:34:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10927 states to 10927 states and 18406 transitions. [2022-12-14 05:34:09,454 INFO L78 Accepts]: Start accepts. Automaton has 10927 states and 18406 transitions. Word has length 97 [2022-12-14 05:34:09,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:09,454 INFO L495 AbstractCegarLoop]: Abstraction has 10927 states and 18406 transitions. [2022-12-14 05:34:09,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 05:34:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 10927 states and 18406 transitions. [2022-12-14 05:34:09,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 05:34:09,456 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:09,456 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 05:34:09,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 05:34:09,456 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:09,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:09,457 INFO L85 PathProgramCache]: Analyzing trace with hash -841994459, now seen corresponding path program 1 times [2022-12-14 05:34:09,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:09,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553656384] [2022-12-14 05:34:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:09,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:34:09,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:09,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553656384] [2022-12-14 05:34:09,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553656384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:09,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:09,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:34:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525647270] [2022-12-14 05:34:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:09,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:34:09,594 INFO L87 Difference]: Start difference. First operand 10927 states and 18406 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 05:34:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:11,626 INFO L93 Difference]: Finished difference Result 33312 states and 59838 transitions. [2022-12-14 05:34:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 98 [2022-12-14 05:34:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:11,717 INFO L225 Difference]: With dead ends: 33312 [2022-12-14 05:34:11,717 INFO L226 Difference]: Without dead ends: 22436 [2022-12-14 05:34:11,749 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 [2022-12-14 05:34:11,749 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1113 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:11,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 744 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 05:34:11,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22436 states. [2022-12-14 05:34:13,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22436 to 21364. [2022-12-14 05:34:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21364 states, 15311 states have (on average 1.60244268826334) internal successors, (24535), 16435 states have internal predecessors, (24535), 4670 states have call successors, (4670), 1127 states have call predecessors, (4670), 1382 states have return successors, (8107), 4227 states have call predecessors, (8107), 4665 states have call successors, (8107) [2022-12-14 05:34:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21364 states to 21364 states and 37312 transitions. [2022-12-14 05:34:13,122 INFO L78 Accepts]: Start accepts. Automaton has 21364 states and 37312 transitions. Word has length 98 [2022-12-14 05:34:13,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:13,122 INFO L495 AbstractCegarLoop]: Abstraction has 21364 states and 37312 transitions. [2022-12-14 05:34:13,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 05:34:13,122 INFO L276 IsEmpty]: Start isEmpty. Operand 21364 states and 37312 transitions. [2022-12-14 05:34:13,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 05:34:13,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:13,127 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:13,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 05:34:13,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:13,128 INFO L85 PathProgramCache]: Analyzing trace with hash -118401807, now seen corresponding path program 1 times [2022-12-14 05:34:13,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:13,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930585978] [2022-12-14 05:34:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:13,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-14 05:34:13,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:13,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930585978] [2022-12-14 05:34:13,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930585978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:13,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:34:13,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:34:13,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156896042] [2022-12-14 05:34:13,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:13,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:13,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:13,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:13,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:34:13,258 INFO L87 Difference]: Start difference. First operand 21364 states and 37312 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 05:34:14,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:14,972 INFO L93 Difference]: Finished difference Result 45987 states and 83603 transitions. [2022-12-14 05:34:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:14,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2022-12-14 05:34:14,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:15,060 INFO L225 Difference]: With dead ends: 45987 [2022-12-14 05:34:15,060 INFO L226 Difference]: Without dead ends: 24640 [2022-12-14 05:34:15,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:34:15,114 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 118 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:15,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1740 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24640 states. [2022-12-14 05:34:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24640 to 21604. [2022-12-14 05:34:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21604 states, 15534 states have (on average 1.5968198789751513) internal successors, (24805), 16642 states have internal predecessors, (24805), 4687 states have call successors, (4687), 1127 states have call predecessors, (4687), 1382 states have return successors, (8124), 4244 states have call predecessors, (8124), 4682 states have call successors, (8124) [2022-12-14 05:34:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21604 states to 21604 states and 37616 transitions. [2022-12-14 05:34:16,372 INFO L78 Accepts]: Start accepts. Automaton has 21604 states and 37616 transitions. Word has length 146 [2022-12-14 05:34:16,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:16,372 INFO L495 AbstractCegarLoop]: Abstraction has 21604 states and 37616 transitions. [2022-12-14 05:34:16,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 05:34:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand 21604 states and 37616 transitions. [2022-12-14 05:34:16,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-14 05:34:16,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:16,377 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:16,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 05:34:16,377 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:16,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1845298994, now seen corresponding path program 1 times [2022-12-14 05:34:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:16,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033827302] [2022-12-14 05:34:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:16,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-14 05:34:16,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:16,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033827302] [2022-12-14 05:34:16,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033827302] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:16,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045488928] [2022-12-14 05:34:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:16,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:16,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:16,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:16,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:34:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:16,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:34:16,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 05:34:16,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:16,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045488928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:16,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:16,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 05:34:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631959622] [2022-12-14 05:34:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:16,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:34:16,840 INFO L87 Difference]: Start difference. First operand 21604 states and 37616 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:34:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:18,372 INFO L93 Difference]: Finished difference Result 45687 states and 82818 transitions. [2022-12-14 05:34:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:18,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 149 [2022-12-14 05:34:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:18,484 INFO L225 Difference]: With dead ends: 45687 [2022-12-14 05:34:18,484 INFO L226 Difference]: Without dead ends: 24100 [2022-12-14 05:34:18,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:18,569 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 213 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:18,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1419 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:18,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24100 states. [2022-12-14 05:34:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24100 to 24100. [2022-12-14 05:34:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24100 states, 17966 states have (on average 1.6407102304352665) internal successors, (29477), 19074 states have internal predecessors, (29477), 4687 states have call successors, (4687), 1191 states have call predecessors, (4687), 1446 states have return successors, (8124), 4244 states have call predecessors, (8124), 4682 states have call successors, (8124) [2022-12-14 05:34:19,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24100 states to 24100 states and 42288 transitions. [2022-12-14 05:34:19,925 INFO L78 Accepts]: Start accepts. Automaton has 24100 states and 42288 transitions. Word has length 149 [2022-12-14 05:34:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:19,925 INFO L495 AbstractCegarLoop]: Abstraction has 24100 states and 42288 transitions. [2022-12-14 05:34:19,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:34:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 24100 states and 42288 transitions. [2022-12-14 05:34:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-14 05:34:19,930 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:19,930 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:19,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:34:20,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 05:34:20,131 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:20,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1995101254, now seen corresponding path program 1 times [2022-12-14 05:34:20,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:20,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498878350] [2022-12-14 05:34:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:20,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-14 05:34:20,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:20,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498878350] [2022-12-14 05:34:20,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498878350] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:20,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249041904] [2022-12-14 05:34:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:20,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:20,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:20,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:20,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:34:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:20,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:34:20,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 05:34:20,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:20,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249041904] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:20,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:20,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 05:34:20,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949906996] [2022-12-14 05:34:20,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:20,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:20,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:34:20,534 INFO L87 Difference]: Start difference. First operand 24100 states and 42288 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:34:21,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:21,725 INFO L93 Difference]: Finished difference Result 50679 states and 92096 transitions. [2022-12-14 05:34:21,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:21,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 154 [2022-12-14 05:34:21,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:21,819 INFO L225 Difference]: With dead ends: 50679 [2022-12-14 05:34:21,819 INFO L226 Difference]: Without dead ends: 26596 [2022-12-14 05:34:21,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:34:21,885 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 211 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:21,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1419 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:21,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26596 states. [2022-12-14 05:34:23,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26596 to 26596. [2022-12-14 05:34:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26596 states, 20398 states have (on average 1.6741347190901068) internal successors, (34149), 21506 states have internal predecessors, (34149), 4687 states have call successors, (4687), 1255 states have call predecessors, (4687), 1510 states have return successors, (8124), 4244 states have call predecessors, (8124), 4682 states have call successors, (8124) [2022-12-14 05:34:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26596 states to 26596 states and 46960 transitions. [2022-12-14 05:34:23,115 INFO L78 Accepts]: Start accepts. Automaton has 26596 states and 46960 transitions. Word has length 154 [2022-12-14 05:34:23,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:23,116 INFO L495 AbstractCegarLoop]: Abstraction has 26596 states and 46960 transitions. [2022-12-14 05:34:23,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:34:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 26596 states and 46960 transitions. [2022-12-14 05:34:23,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-14 05:34:23,120 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:23,120 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:23,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:34:23,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 05:34:23,321 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:23,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1031607926, now seen corresponding path program 1 times [2022-12-14 05:34:23,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:23,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628772258] [2022-12-14 05:34:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:23,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-14 05:34:24,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:24,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628772258] [2022-12-14 05:34:24,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628772258] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:24,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450963706] [2022-12-14 05:34:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:24,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:24,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:24,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:34:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:24,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:34:24,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 05:34:24,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:24,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450963706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:24,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:24,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2022-12-14 05:34:24,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485313184] [2022-12-14 05:34:24,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:24,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:24,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:24,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:34:24,408 INFO L87 Difference]: Start difference. First operand 26596 states and 46960 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:34:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:26,151 INFO L93 Difference]: Finished difference Result 55671 states and 101374 transitions. [2022-12-14 05:34:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:26,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 158 [2022-12-14 05:34:26,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:26,253 INFO L225 Difference]: With dead ends: 55671 [2022-12-14 05:34:26,253 INFO L226 Difference]: Without dead ends: 29092 [2022-12-14 05:34:26,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:34:26,327 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 209 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:26,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1419 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:34:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29092 states. [2022-12-14 05:34:27,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29092 to 29092. [2022-12-14 05:34:27,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29092 states, 22830 states have (on average 1.7004380201489269) internal successors, (38821), 23938 states have internal predecessors, (38821), 4687 states have call successors, (4687), 1319 states have call predecessors, (4687), 1574 states have return successors, (8124), 4244 states have call predecessors, (8124), 4682 states have call successors, (8124) [2022-12-14 05:34:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29092 states to 29092 states and 51632 transitions. [2022-12-14 05:34:27,598 INFO L78 Accepts]: Start accepts. Automaton has 29092 states and 51632 transitions. Word has length 158 [2022-12-14 05:34:27,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:27,598 INFO L495 AbstractCegarLoop]: Abstraction has 29092 states and 51632 transitions. [2022-12-14 05:34:27,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:34:27,598 INFO L276 IsEmpty]: Start isEmpty. Operand 29092 states and 51632 transitions. [2022-12-14 05:34:27,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-12-14 05:34:27,602 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:27,603 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:27,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:34:27,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 05:34:27,804 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:27,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1008754590, now seen corresponding path program 1 times [2022-12-14 05:34:27,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:27,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361518358] [2022-12-14 05:34:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:27,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 05:34:28,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:28,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361518358] [2022-12-14 05:34:28,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361518358] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:28,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836756198] [2022-12-14 05:34:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:28,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:28,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:28,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:28,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:34:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:28,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:34:28,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 05:34:28,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:28,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836756198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:28,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:28,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2022-12-14 05:34:28,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283745824] [2022-12-14 05:34:28,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:28,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:28,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:28,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:28,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:34:28,767 INFO L87 Difference]: Start difference. First operand 29092 states and 51632 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:34:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:29,987 INFO L93 Difference]: Finished difference Result 60663 states and 110652 transitions. [2022-12-14 05:34:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:29,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 161 [2022-12-14 05:34:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:30,082 INFO L225 Difference]: With dead ends: 60663 [2022-12-14 05:34:30,082 INFO L226 Difference]: Without dead ends: 31588 [2022-12-14 05:34:30,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:34:30,145 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 207 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:30,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1419 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:34:30,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31588 states. [2022-12-14 05:34:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31588 to 31588. [2022-12-14 05:34:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31588 states, 25262 states have (on average 1.7216768268545641) internal successors, (43493), 26370 states have internal predecessors, (43493), 4687 states have call successors, (4687), 1383 states have call predecessors, (4687), 1638 states have return successors, (8124), 4244 states have call predecessors, (8124), 4682 states have call successors, (8124) [2022-12-14 05:34:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31588 states to 31588 states and 56304 transitions. [2022-12-14 05:34:31,426 INFO L78 Accepts]: Start accepts. Automaton has 31588 states and 56304 transitions. Word has length 161 [2022-12-14 05:34:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:31,427 INFO L495 AbstractCegarLoop]: Abstraction has 31588 states and 56304 transitions. [2022-12-14 05:34:31,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:34:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 31588 states and 56304 transitions. [2022-12-14 05:34:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-14 05:34:31,431 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:31,431 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:31,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:34:31,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 05:34:31,633 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:31,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:31,634 INFO L85 PathProgramCache]: Analyzing trace with hash 912956944, now seen corresponding path program 1 times [2022-12-14 05:34:31,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:31,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144582012] [2022-12-14 05:34:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:31,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 05:34:32,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:32,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144582012] [2022-12-14 05:34:32,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144582012] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:32,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685043259] [2022-12-14 05:34:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:32,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:32,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:32,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:32,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:34:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:32,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 05:34:32,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-14 05:34:32,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:34:32,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685043259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:34:32,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:34:32,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2022-12-14 05:34:32,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009659520] [2022-12-14 05:34:32,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:34:32,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:34:32,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:32,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:34:32,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:34:32,520 INFO L87 Difference]: Start difference. First operand 31588 states and 56304 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-12-14 05:34:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:33,623 INFO L93 Difference]: Finished difference Result 33208 states and 61947 transitions. [2022-12-14 05:34:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:34:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 163 [2022-12-14 05:34:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:33,799 INFO L225 Difference]: With dead ends: 33208 [2022-12-14 05:34:33,799 INFO L226 Difference]: Without dead ends: 33051 [2022-12-14 05:34:33,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:34:33,810 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 44 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:33,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1702 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:33,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33051 states. [2022-12-14 05:34:35,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33051 to 31712. [2022-12-14 05:34:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31712 states, 25386 states have (on average 1.7181517371779722) internal successors, (43617), 26494 states have internal predecessors, (43617), 4687 states have call successors, (4687), 1383 states have call predecessors, (4687), 1638 states have return successors, (8124), 4244 states have call predecessors, (8124), 4682 states have call successors, (8124) [2022-12-14 05:34:35,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31712 states to 31712 states and 56428 transitions. [2022-12-14 05:34:35,400 INFO L78 Accepts]: Start accepts. Automaton has 31712 states and 56428 transitions. Word has length 163 [2022-12-14 05:34:35,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:35,400 INFO L495 AbstractCegarLoop]: Abstraction has 31712 states and 56428 transitions. [2022-12-14 05:34:35,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-12-14 05:34:35,400 INFO L276 IsEmpty]: Start isEmpty. Operand 31712 states and 56428 transitions. [2022-12-14 05:34:35,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-12-14 05:34:35,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:35,408 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:35,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 05:34:35,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:35,610 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:35,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:35,611 INFO L85 PathProgramCache]: Analyzing trace with hash -569034191, now seen corresponding path program 1 times [2022-12-14 05:34:35,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:35,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730921875] [2022-12-14 05:34:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-14 05:34:36,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:36,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730921875] [2022-12-14 05:34:36,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730921875] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:36,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924881278] [2022-12-14 05:34:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:36,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:36,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:36,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:36,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6493ed-78b0-4fe8-88c4-74de3baf8581/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:34:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:36,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-14 05:34:36,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-12-14 05:34:37,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:39,061 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 05:34:45,916 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 05:34:46,204 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 05:34:51,781 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 05:34:52,067 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 05:34:57,966 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 05:34:58,055 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 49188 disjunctions. This might take some time... [2022-12-14 05:37:28,045 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 49188 disjunctions.