./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/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_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/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_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/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 bf462270e0c7c70d13b1dd17e19a66c26542ea365ec57459489c94e9a63941a0 --- 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 07:00:59,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:00:59,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:00:59,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:00:59,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:00:59,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:00:59,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:00:59,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:00:59,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:00:59,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:00:59,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:00:59,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:00:59,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:00:59,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:00:59,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:00:59,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:00:59,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:00:59,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:00:59,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:00:59,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:00:59,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:00:59,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:00:59,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:00:59,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:00:59,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:00:59,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:00:59,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:00:59,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:00:59,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:00:59,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:00:59,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:00:59,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:00:59,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:00:59,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:00:59,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:00:59,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:00:59,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:00:59,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:00:59,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:00:59,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:00:59,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:00:59,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:00:59,252 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:00:59,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:00:59,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:00:59,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:00:59,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:00:59,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:00:59,253 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:00:59,254 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:00:59,254 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:00:59,254 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:00:59,254 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:00:59,254 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:00:59,254 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:00:59,254 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:00:59,254 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:00:59,254 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:00:59,254 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:00:59,254 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:00:59,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:00:59,255 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:00:59,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:00:59,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:00:59,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:00:59,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:00:59,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:00:59,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:00:59,256 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:00:59,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:00:59,256 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:00:59,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:00:59,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:00:59,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:00:59,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:00:59,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:00:59,257 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:00:59,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:00:59,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:00:59,257 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:00:59,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:00:59,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:00:59,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:00:59,257 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_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf462270e0c7c70d13b1dd17e19a66c26542ea365ec57459489c94e9a63941a0 [2022-12-14 07:00:59,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:00:59,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:00:59,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:00:59,432 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:00:59,432 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:00:59,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_product18.cil.c [2022-12-14 07:01:02,105 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:01:02,357 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:01:02,357 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/sv-benchmarks/c/product-lines/email_spec4_product18.cil.c [2022-12-14 07:01:02,373 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/data/a5a83c2fe/0ec38b8896ca44799bc3373fb75ace91/FLAG7c414e38e [2022-12-14 07:01:02,387 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/data/a5a83c2fe/0ec38b8896ca44799bc3373fb75ace91 [2022-12-14 07:01:02,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:01:02,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:01:02,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:01:02,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:01:02,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:01:02,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ecc6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02, skipping insertion in model container [2022-12-14 07:01:02,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:01:02,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:01:02,704 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,706 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,708 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,762 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,771 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,773 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,778 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,780 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_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/sv-benchmarks/c/product-lines/email_spec4_product18.cil.c[61907,61920] [2022-12-14 07:01:02,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:01:02,796 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:01:02,834 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,835 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,837 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,856 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,857 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,858 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,861 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:01:02,863 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_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/sv-benchmarks/c/product-lines/email_spec4_product18.cil.c[61907,61920] [2022-12-14 07:01:02,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:01:02,883 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:01:02,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02 WrapperNode [2022-12-14 07:01:02,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:01:02,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:01:02,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:01:02,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:01:02,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,947 INFO L138 Inliner]: procedures = 127, calls = 199, calls flagged for inlining = 58, calls inlined = 49, statements flattened = 892 [2022-12-14 07:01:02,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:01:02,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:01:02,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:01:02,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:01:02,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,985 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:02,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:01:02,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:01:02,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:01:02,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:01:02,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (1/1) ... [2022-12-14 07:01:03,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:01:03,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:03,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:01:03,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:01:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 07:01:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 07:01:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 07:01:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 07:01:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 07:01:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 07:01:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 07:01:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 07:01:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 07:01:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 07:01:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 07:01:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 07:01:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 07:01:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 07:01:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 07:01:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 07:01:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 07:01:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 07:01:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 07:01:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:01:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 07:01:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 07:01:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 07:01:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 07:01:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 07:01:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 07:01:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 07:01:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 07:01:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 07:01:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 07:01:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 07:01:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 07:01:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 07:01:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 07:01:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:01:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 07:01:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 07:01:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:01:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:01:03,218 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:01:03,219 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:01:03,697 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:01:04,036 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:01:04,036 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:01:04,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:01:04 BoogieIcfgContainer [2022-12-14 07:01:04,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:01:04,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:01:04,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:01:04,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:01:04,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:01:02" (1/3) ... [2022-12-14 07:01:04,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1356fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:01:04, skipping insertion in model container [2022-12-14 07:01:04,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:02" (2/3) ... [2022-12-14 07:01:04,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1356fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:01:04, skipping insertion in model container [2022-12-14 07:01:04,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:01:04" (3/3) ... [2022-12-14 07:01:04,044 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product18.cil.c [2022-12-14 07:01:04,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:01:04,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:01:04,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:01:04,099 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;@66a7234c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:01:04,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:01:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 92 states have internal predecessors, (123), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-12-14 07:01:04,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 07:01:04,111 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:04,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:01:04,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:01:04,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:04,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1115990450, now seen corresponding path program 1 times [2022-12-14 07:01:04,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:04,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073707098] [2022-12-14 07:01:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:04,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:04,317 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 07:01:04,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:04,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073707098] [2022-12-14 07:01:04,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073707098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:01:04,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:01:04,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:01:04,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240160220] [2022-12-14 07:01:04,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:01:04,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:01:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:04,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:01:04,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:01:04,347 INFO L87 Difference]: Start difference. First operand has 149 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 92 states have internal predecessors, (123), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:01:04,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:04,450 INFO L93 Difference]: Finished difference Result 215 states and 284 transitions. [2022-12-14 07:01:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:01:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 58 [2022-12-14 07:01:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:04,458 INFO L225 Difference]: With dead ends: 215 [2022-12-14 07:01:04,458 INFO L226 Difference]: Without dead ends: 146 [2022-12-14 07:01:04,461 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 07:01:04,463 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:04,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:01:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-14 07:01:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-12-14 07:01:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 88 states have (on average 1.3295454545454546) internal successors, (117), 89 states have internal predecessors, (117), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-12-14 07:01:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 196 transitions. [2022-12-14 07:01:04,499 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 196 transitions. Word has length 58 [2022-12-14 07:01:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:04,500 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 196 transitions. [2022-12-14 07:01:04,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:01:04,500 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 196 transitions. [2022-12-14 07:01:04,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 07:01:04,502 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:04,502 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:01:04,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:01:04,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:01:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:04,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1886735562, now seen corresponding path program 1 times [2022-12-14 07:01:04,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:04,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229838905] [2022-12-14 07:01:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:04,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:04,615 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 07:01:04,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:04,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229838905] [2022-12-14 07:01:04,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229838905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:01:04,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:01:04,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:01:04,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002230785] [2022-12-14 07:01:04,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:01:04,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:01:04,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:04,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:01:04,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:01:04,619 INFO L87 Difference]: Start difference. First operand 146 states and 196 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:01:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:04,705 INFO L93 Difference]: Finished difference Result 211 states and 272 transitions. [2022-12-14 07:01:04,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:01:04,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2022-12-14 07:01:04,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:04,708 INFO L225 Difference]: With dead ends: 211 [2022-12-14 07:01:04,708 INFO L226 Difference]: Without dead ends: 148 [2022-12-14 07:01:04,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:01:04,710 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:04,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 337 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:01:04,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-12-14 07:01:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-12-14 07:01:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 91 states have internal predecessors, (119), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-12-14 07:01:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2022-12-14 07:01:04,726 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 59 [2022-12-14 07:01:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:04,726 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2022-12-14 07:01:04,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:01:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2022-12-14 07:01:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 07:01:04,727 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:04,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:01:04,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:01:04,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:01:04,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash 308440913, now seen corresponding path program 1 times [2022-12-14 07:01:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:04,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704272916] [2022-12-14 07:01:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:01:04,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:04,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704272916] [2022-12-14 07:01:04,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704272916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:01:04,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:01:04,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:01:04,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489079028] [2022-12-14 07:01:04,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:01:04,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:01:04,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:04,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:01:04,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:01:04,794 INFO L87 Difference]: Start difference. First operand 148 states and 198 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:01:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:04,865 INFO L93 Difference]: Finished difference Result 326 states and 455 transitions. [2022-12-14 07:01:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:01:04,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2022-12-14 07:01:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:04,867 INFO L225 Difference]: With dead ends: 326 [2022-12-14 07:01:04,867 INFO L226 Difference]: Without dead ends: 196 [2022-12-14 07:01:04,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:01:04,869 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 57 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:04,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 349 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:01:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-12-14 07:01:04,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 191. [2022-12-14 07:01:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.4098360655737705) internal successors, (172), 123 states have internal predecessors, (172), 51 states have call successors, (51), 17 states have call predecessors, (51), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 07:01:04,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 273 transitions. [2022-12-14 07:01:04,885 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 273 transitions. Word has length 64 [2022-12-14 07:01:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:04,886 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 273 transitions. [2022-12-14 07:01:04,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:01:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 273 transitions. [2022-12-14 07:01:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 07:01:04,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:04,888 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:01:04,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:01:04,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:01:04,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2071614527, now seen corresponding path program 1 times [2022-12-14 07:01:04,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:04,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53080251] [2022-12-14 07:01:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:01:05,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:05,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53080251] [2022-12-14 07:01:05,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53080251] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:05,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704998339] [2022-12-14 07:01:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:05,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:05,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:05,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:05,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:01:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:05,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:01:05,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:01:05,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:01:05,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704998339] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:05,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2018377380] [2022-12-14 07:01:05,383 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 07:01:05,384 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:05,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:05,392 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:05,393 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:39,268 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:01:39,553 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 07:01:39,842 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 468 for LOIs [2022-12-14 07:02:07,726 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 446 for LOIs [2022-12-14 07:02:08,006 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 466 for LOIs [2022-12-14 07:02:18,604 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 435 for LOIs [2022-12-14 07:02:18,851 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-12-14 07:02:19,443 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 246 for LOIs [2022-12-14 07:02:19,481 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:04:14,586 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2570#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing_getClientId_~retValue_acc~16#1| 2147483647) (= ~__ste_email_isEncrypted1~0 0) (= ~__ste_email_subject0~0.offset 0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_~client#1|) (<= |outgoing___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 1 |outgoing_mail_#in~client#1|) (<= |outgoing_mail_#in~msg#1| 1) (<= 0 (+ 2147483648 |outgoing_getClientId_#res#1|)) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (not (= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~5#1| 0)) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= 1 |outgoing_sign_~client#1|) (<= 1 |outgoing_mail_~msg#1|) (<= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~5#1| 1) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= |outgoing_mail_~__utac__ad__arg2~0#1| 1) (= ~__ste_client_name2~0.offset 0) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_client_name1~0.base 0) (<= |outgoing___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_client_autoResponse1~0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= |outgoing_sign_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= ~__ste_email_isSignatureVerified0~0 0) (<= 0 (+ |outgoing_sign_~privkey~0#1| 2147483648)) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= 0 (+ |outgoing_getClientId_~retValue_acc~16#1| 2147483648)) (<= |outgoing_sign_~privkey~0#1| 2147483647) (= ~__ste_Email_counter~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_#in~client#1|) (<= |outgoing_sign_~client#1| 1) (= ~__ste_ClientKeyring_size1~0 0) (= |old(~__ste_email_signKey0~0)| 0) (= ~__ste_email_body0~0.offset 0) (<= 1 |outgoing_~client#1|) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing_getClientId_#res#1| 2147483647) (<= |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 1) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= |outgoing_#in~msg#1| 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (= |old(~queue_empty~0)| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= |old(~__ste_email_from0~0)| 0) (<= |outgoing_sign_#in~client#1| 1) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing_getClientId_~handle#1|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (= ~__ste_email_encryptionKey0~0 0) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1|) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (= |old(~__ste_email_isSigned0~0)| 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_~msg#1|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 1) (= ~__ste_Client_Keyring0_User0~0 0) (<= 1 |outgoing_mail_#in~msg#1|) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_#in~client#1|) (<= |outgoing_mail_~__utac__ad__arg1~0#1| 1) (<= 1 |outgoing_mail_~__utac__ad__arg1~0#1|) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= 1 |outgoing_sign_#in~client#1|) (<= |outgoing_getClientId_#in~handle#1| 1) (<= 1 |outgoing_sign_~msg#1|) (<= 1 |outgoing___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing_~msg#1|) (= ~__SELECTED_FEATURE_Base~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing_mail_~client#1| 1) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= |old(~queued_message~0)| 0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= |outgoing_mail_~msg#1| 1) (= |old(~queued_client~0)| 0) (= ~__ste_email_subject1~0.base 0) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing_mail_#in~client#1| 1) (<= 0 (+ 2147483648 |outgoing_sign_~tmp~19#1|)) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (<= |outgoing_sign_#in~msg#1| 1) (<= |old(~__ste_email_isSigned1~0)| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing_#in~client#1| 1) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~tmp~14#1| 2147483647) (= ~__ste_Client_AddressBook0_Alias2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1| 1) (= ~__ste_ClientKeyring_size0~0 0) (= ~__ste_email_isEncrypted0~0 0) (<= 0 ~__ste_Client_Keyring2_User1~0) (<= |outgoing_~msg#1| 1) (<= |outgoing_outgoing__wrappee__AutoResponder_~client#1| 1) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~tmp~14#1| 2147483648)) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~msg#1| 1) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 1 |outgoing_getClientId_#in~handle#1|) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= |outgoing_getClientId_~handle#1| 1) (<= 1 |outgoing_sign_#in~msg#1|) (<= 1 |outgoing_#in~client#1|) (<= 1 |outgoing_outgoing__wrappee__AutoResponder_~msg#1|) (<= |outgoing_~client#1| 1) (<= 1 |outgoing_mail_~__utac__ad__arg2~0#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (= |outgoing___utac_acc__SignForward_spec__1_~tmp~12#1| 0) (<= 0 |old(~__ste_email_isSigned1~0)|) (<= |old(~__ste_email_signKey1~0)| 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 0 |outgoing___utac_acc__SignForward_spec__1_~tmp___0~5#1|) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing_mail_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_encryptionKey1~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 |old(~__ste_email_signKey1~0)|) (<= |outgoing_sign_~tmp~19#1| 2147483647) (= |#NULL.base| 0) (= ~__ste_client_privateKey0~0 |outgoing___utac_acc__SignForward_spec__1_~tmp~12#1|) (<= ~queued_client~0 0))' at error location [2022-12-14 07:04:14,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:04:14,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:04:14,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 07:04:14,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057279581] [2022-12-14 07:04:14,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:04:14,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:04:14,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:14,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:04:14,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2600, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 07:04:14,590 INFO L87 Difference]: Start difference. First operand 191 states and 273 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 07:04:14,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:14,767 INFO L93 Difference]: Finished difference Result 504 states and 774 transitions. [2022-12-14 07:04:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:04:14,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 65 [2022-12-14 07:04:14,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:14,771 INFO L225 Difference]: With dead ends: 504 [2022-12-14 07:04:14,772 INFO L226 Difference]: Without dead ends: 441 [2022-12-14 07:04:14,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 115.1s TimeCoverageRelationStatistics Valid=156, Invalid=2600, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 07:04:14,774 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 165 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:14,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 818 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:14,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-12-14 07:04:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 426. [2022-12-14 07:04:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 293 states have (on average 1.52901023890785) internal successors, (448), 294 states have internal predecessors, (448), 115 states have call successors, (115), 17 states have call predecessors, (115), 17 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2022-12-14 07:04:14,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 677 transitions. [2022-12-14 07:04:14,810 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 677 transitions. Word has length 65 [2022-12-14 07:04:14,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:14,810 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 677 transitions. [2022-12-14 07:04:14,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 07:04:14,810 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 677 transitions. [2022-12-14 07:04:14,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 07:04:14,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:14,815 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:04:14,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:04:15,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:04:15,017 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:15,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1440257329, now seen corresponding path program 1 times [2022-12-14 07:04:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:15,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944584567] [2022-12-14 07:04:15,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:15,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:15,129 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 07:04:15,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:15,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944584567] [2022-12-14 07:04:15,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944584567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:15,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:15,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:04:15,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589718156] [2022-12-14 07:04:15,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:15,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:04:15,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:15,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:04:15,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:15,132 INFO L87 Difference]: Start difference. First operand 426 states and 677 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:15,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:15,224 INFO L93 Difference]: Finished difference Result 1057 states and 1712 transitions. [2022-12-14 07:04:15,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:04:15,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 71 [2022-12-14 07:04:15,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:15,228 INFO L225 Difference]: With dead ends: 1057 [2022-12-14 07:04:15,228 INFO L226 Difference]: Without dead ends: 663 [2022-12-14 07:04:15,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:15,231 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 55 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:15,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 355 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:15,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-12-14 07:04:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 658. [2022-12-14 07:04:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 461 states have (on average 1.5422993492407808) internal successors, (711), 462 states have internal predecessors, (711), 179 states have call successors, (179), 17 states have call predecessors, (179), 17 states have return successors, (178), 178 states have call predecessors, (178), 178 states have call successors, (178) [2022-12-14 07:04:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1068 transitions. [2022-12-14 07:04:15,274 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1068 transitions. Word has length 71 [2022-12-14 07:04:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:15,274 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1068 transitions. [2022-12-14 07:04:15,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1068 transitions. [2022-12-14 07:04:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 07:04:15,279 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:15,279 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:04:15,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:04:15,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2121034594, now seen corresponding path program 1 times [2022-12-14 07:04:15,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:15,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103928563] [2022-12-14 07:04:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:15,354 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 07:04:15,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:15,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103928563] [2022-12-14 07:04:15,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103928563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:15,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:15,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:04:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834051587] [2022-12-14 07:04:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:15,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:04:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:04:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:15,356 INFO L87 Difference]: Start difference. First operand 658 states and 1068 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:15,460 INFO L93 Difference]: Finished difference Result 1614 states and 2655 transitions. [2022-12-14 07:04:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:04:15,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 72 [2022-12-14 07:04:15,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:15,465 INFO L225 Difference]: With dead ends: 1614 [2022-12-14 07:04:15,465 INFO L226 Difference]: Without dead ends: 1018 [2022-12-14 07:04:15,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:15,468 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 53 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:15,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 345 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2022-12-14 07:04:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1013. [2022-12-14 07:04:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 721 states have (on average 1.5464632454923717) internal successors, (1115), 722 states have internal predecessors, (1115), 274 states have call successors, (274), 17 states have call predecessors, (274), 17 states have return successors, (273), 273 states have call predecessors, (273), 273 states have call successors, (273) [2022-12-14 07:04:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1662 transitions. [2022-12-14 07:04:15,533 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1662 transitions. Word has length 72 [2022-12-14 07:04:15,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:15,534 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1662 transitions. [2022-12-14 07:04:15,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1662 transitions. [2022-12-14 07:04:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 07:04:15,539 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:15,539 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:04:15,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:04:15,539 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash -723474691, now seen corresponding path program 1 times [2022-12-14 07:04:15,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:15,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076310850] [2022-12-14 07:04:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:15,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:15,616 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 07:04:15,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:15,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076310850] [2022-12-14 07:04:15,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076310850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:15,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:15,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:04:15,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314496122] [2022-12-14 07:04:15,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:15,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:04:15,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:15,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:04:15,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:15,618 INFO L87 Difference]: Start difference. First operand 1013 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:15,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:15,742 INFO L93 Difference]: Finished difference Result 2412 states and 3999 transitions. [2022-12-14 07:04:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:04:15,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 73 [2022-12-14 07:04:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:15,750 INFO L225 Difference]: With dead ends: 2412 [2022-12-14 07:04:15,750 INFO L226 Difference]: Without dead ends: 1541 [2022-12-14 07:04:15,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:15,752 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 51 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:15,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 340 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:15,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-12-14 07:04:15,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1536. [2022-12-14 07:04:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1121 states have (on average 1.5495093666369313) internal successors, (1737), 1122 states have internal predecessors, (1737), 397 states have call successors, (397), 17 states have call predecessors, (397), 17 states have return successors, (396), 396 states have call predecessors, (396), 396 states have call successors, (396) [2022-12-14 07:04:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2530 transitions. [2022-12-14 07:04:15,812 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2530 transitions. Word has length 73 [2022-12-14 07:04:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:15,812 INFO L495 AbstractCegarLoop]: Abstraction has 1536 states and 2530 transitions. [2022-12-14 07:04:15,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2530 transitions. [2022-12-14 07:04:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 07:04:15,816 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:15,816 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 07:04:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:04:15,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:15,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1587832867, now seen corresponding path program 1 times [2022-12-14 07:04:15,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:15,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102329279] [2022-12-14 07:04:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:15,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:15,870 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 07:04:15,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:15,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102329279] [2022-12-14 07:04:15,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102329279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:15,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:15,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:04:15,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760932424] [2022-12-14 07:04:15,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:15,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:04:15,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:04:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:15,873 INFO L87 Difference]: Start difference. First operand 1536 states and 2530 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:16,027 INFO L93 Difference]: Finished difference Result 3622 states and 6027 transitions. [2022-12-14 07:04:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:04:16,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2022-12-14 07:04:16,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:16,039 INFO L225 Difference]: With dead ends: 3622 [2022-12-14 07:04:16,039 INFO L226 Difference]: Without dead ends: 2365 [2022-12-14 07:04:16,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:16,044 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 49 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:16,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 340 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2022-12-14 07:04:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2360. [2022-12-14 07:04:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 1766 states have (on average 1.5509626274065684) internal successors, (2739), 1767 states have internal predecessors, (2739), 576 states have call successors, (576), 17 states have call predecessors, (576), 17 states have return successors, (575), 575 states have call predecessors, (575), 575 states have call successors, (575) [2022-12-14 07:04:16,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 3890 transitions. [2022-12-14 07:04:16,183 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 3890 transitions. Word has length 74 [2022-12-14 07:04:16,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:16,184 INFO L495 AbstractCegarLoop]: Abstraction has 2360 states and 3890 transitions. [2022-12-14 07:04:16,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:16,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 3890 transitions. [2022-12-14 07:04:16,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 07:04:16,190 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:16,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 07:04:16,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 07:04:16,191 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:16,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:16,191 INFO L85 PathProgramCache]: Analyzing trace with hash 738911449, now seen corresponding path program 1 times [2022-12-14 07:04:16,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:16,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649436567] [2022-12-14 07:04:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:16,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:16,242 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 07:04:16,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:16,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649436567] [2022-12-14 07:04:16,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649436567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:16,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:16,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:04:16,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734437789] [2022-12-14 07:04:16,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:04:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:04:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:16,244 INFO L87 Difference]: Start difference. First operand 2360 states and 3890 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:16,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:16,418 INFO L93 Difference]: Finished difference Result 5833 states and 9699 transitions. [2022-12-14 07:04:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:04:16,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 75 [2022-12-14 07:04:16,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:16,431 INFO L225 Difference]: With dead ends: 5833 [2022-12-14 07:04:16,431 INFO L226 Difference]: Without dead ends: 3895 [2022-12-14 07:04:16,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:16,437 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 47 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:16,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 356 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:16,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2022-12-14 07:04:16,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 3890. [2022-12-14 07:04:16,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3890 states, 2920 states have (on average 1.539041095890411) internal successors, (4494), 2921 states have internal predecessors, (4494), 952 states have call successors, (952), 17 states have call predecessors, (952), 17 states have return successors, (951), 951 states have call predecessors, (951), 951 states have call successors, (951) [2022-12-14 07:04:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 6397 transitions. [2022-12-14 07:04:16,671 INFO L78 Accepts]: Start accepts. Automaton has 3890 states and 6397 transitions. Word has length 75 [2022-12-14 07:04:16,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:16,672 INFO L495 AbstractCegarLoop]: Abstraction has 3890 states and 6397 transitions. [2022-12-14 07:04:16,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:16,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states and 6397 transitions. [2022-12-14 07:04:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 07:04:16,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:16,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:04:16,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:04:16,679 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:16,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2009879111, now seen corresponding path program 1 times [2022-12-14 07:04:16,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:16,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244881268] [2022-12-14 07:04:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:16,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:16,723 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 07:04:16,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:16,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244881268] [2022-12-14 07:04:16,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244881268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:16,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:16,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:04:16,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006949349] [2022-12-14 07:04:16,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:16,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:04:16,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:16,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:04:16,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:16,725 INFO L87 Difference]: Start difference. First operand 3890 states and 6397 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:17,069 INFO L93 Difference]: Finished difference Result 9694 states and 16096 transitions. [2022-12-14 07:04:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:04:17,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2022-12-14 07:04:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:17,091 INFO L225 Difference]: With dead ends: 9694 [2022-12-14 07:04:17,091 INFO L226 Difference]: Without dead ends: 6492 [2022-12-14 07:04:17,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:17,099 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 45 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:17,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 345 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:17,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6492 states. [2022-12-14 07:04:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6492 to 6487. [2022-12-14 07:04:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6487 states, 4911 states have (on average 1.5343107310120139) internal successors, (7535), 4912 states have internal predecessors, (7535), 1558 states have call successors, (1558), 17 states have call predecessors, (1558), 17 states have return successors, (1557), 1557 states have call predecessors, (1557), 1557 states have call successors, (1557) [2022-12-14 07:04:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6487 states to 6487 states and 10650 transitions. [2022-12-14 07:04:17,413 INFO L78 Accepts]: Start accepts. Automaton has 6487 states and 10650 transitions. Word has length 76 [2022-12-14 07:04:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:17,413 INFO L495 AbstractCegarLoop]: Abstraction has 6487 states and 10650 transitions. [2022-12-14 07:04:17,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:17,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6487 states and 10650 transitions. [2022-12-14 07:04:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 07:04:17,419 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:17,419 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:04:17,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 07:04:17,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash -609839365, now seen corresponding path program 1 times [2022-12-14 07:04:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:17,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926136490] [2022-12-14 07:04:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:17,467 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 07:04:17,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:17,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926136490] [2022-12-14 07:04:17,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926136490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:17,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:17,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:04:17,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152783668] [2022-12-14 07:04:17,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:17,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:04:17,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:17,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:04:17,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:17,469 INFO L87 Difference]: Start difference. First operand 6487 states and 10650 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:17,889 INFO L93 Difference]: Finished difference Result 16946 states and 28014 transitions. [2022-12-14 07:04:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:04:17,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2022-12-14 07:04:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:17,934 INFO L225 Difference]: With dead ends: 16946 [2022-12-14 07:04:17,935 INFO L226 Difference]: Without dead ends: 11436 [2022-12-14 07:04:17,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:17,951 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 43 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:17,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 355 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:17,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2022-12-14 07:04:18,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 11431. [2022-12-14 07:04:18,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11431 states, 8652 states have (on average 1.5205732778548313) internal successors, (13156), 8653 states have internal predecessors, (13156), 2761 states have call successors, (2761), 17 states have call predecessors, (2761), 17 states have return successors, (2760), 2760 states have call predecessors, (2760), 2760 states have call successors, (2760) [2022-12-14 07:04:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 18677 transitions. [2022-12-14 07:04:18,523 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 18677 transitions. Word has length 77 [2022-12-14 07:04:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:18,523 INFO L495 AbstractCegarLoop]: Abstraction has 11431 states and 18677 transitions. [2022-12-14 07:04:18,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:18,523 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 18677 transitions. [2022-12-14 07:04:18,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 07:04:18,531 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:18,531 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:04:18,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 07:04:18,531 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:18,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:18,532 INFO L85 PathProgramCache]: Analyzing trace with hash -998552920, now seen corresponding path program 1 times [2022-12-14 07:04:18,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:18,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114135827] [2022-12-14 07:04:18,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:18,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:18,577 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 07:04:18,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:18,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114135827] [2022-12-14 07:04:18,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114135827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:18,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:18,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:04:18,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186141190] [2022-12-14 07:04:18,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:18,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:04:18,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:18,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:04:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:18,579 INFO L87 Difference]: Start difference. First operand 11431 states and 18677 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:19,454 INFO L93 Difference]: Finished difference Result 30265 states and 49780 transitions. [2022-12-14 07:04:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:04:19,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2022-12-14 07:04:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:19,514 INFO L225 Difference]: With dead ends: 30265 [2022-12-14 07:04:19,514 INFO L226 Difference]: Without dead ends: 20263 [2022-12-14 07:04:19,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:19,537 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 41 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:19,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 345 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:19,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20263 states. [2022-12-14 07:04:20,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20258. [2022-12-14 07:04:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20258 states, 15440 states have (on average 1.5126295336787565) internal successors, (23355), 15441 states have internal predecessors, (23355), 4800 states have call successors, (4800), 17 states have call predecessors, (4800), 17 states have return successors, (4799), 4799 states have call predecessors, (4799), 4799 states have call successors, (4799) [2022-12-14 07:04:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20258 states to 20258 states and 32954 transitions. [2022-12-14 07:04:20,434 INFO L78 Accepts]: Start accepts. Automaton has 20258 states and 32954 transitions. Word has length 78 [2022-12-14 07:04:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:20,434 INFO L495 AbstractCegarLoop]: Abstraction has 20258 states and 32954 transitions. [2022-12-14 07:04:20,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 20258 states and 32954 transitions. [2022-12-14 07:04:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 07:04:20,442 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:20,442 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 07:04:20,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 07:04:20,442 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:20,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1329282691, now seen corresponding path program 1 times [2022-12-14 07:04:20,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:20,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227937177] [2022-12-14 07:04:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:20,485 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 07:04:20,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:20,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227937177] [2022-12-14 07:04:20,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227937177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:20,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:20,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:04:20,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996850355] [2022-12-14 07:04:20,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:20,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:04:20,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:04:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:20,486 INFO L87 Difference]: Start difference. First operand 20258 states and 32954 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:22,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:22,218 INFO L93 Difference]: Finished difference Result 54977 states and 89872 transitions. [2022-12-14 07:04:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:04:22,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2022-12-14 07:04:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:22,310 INFO L225 Difference]: With dead ends: 54977 [2022-12-14 07:04:22,310 INFO L226 Difference]: Without dead ends: 36703 [2022-12-14 07:04:22,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:22,346 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 39 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:22,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 346 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:22,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36703 states. [2022-12-14 07:04:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36703 to 36698. [2022-12-14 07:04:23,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36698 states, 28165 states have (on average 1.5018285105627551) internal successors, (42299), 28166 states have internal predecessors, (42299), 8515 states have call successors, (8515), 17 states have call predecessors, (8515), 17 states have return successors, (8514), 8514 states have call predecessors, (8514), 8514 states have call successors, (8514) [2022-12-14 07:04:23,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36698 states to 36698 states and 59328 transitions. [2022-12-14 07:04:23,905 INFO L78 Accepts]: Start accepts. Automaton has 36698 states and 59328 transitions. Word has length 79 [2022-12-14 07:04:23,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:23,905 INFO L495 AbstractCegarLoop]: Abstraction has 36698 states and 59328 transitions. [2022-12-14 07:04:23,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 36698 states and 59328 transitions. [2022-12-14 07:04:23,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 07:04:23,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:23,913 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:04:23,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 07:04:23,913 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:23,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:23,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2072458328, now seen corresponding path program 1 times [2022-12-14 07:04:23,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:23,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40385960] [2022-12-14 07:04:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:23,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:23,973 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 07:04:23,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:23,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40385960] [2022-12-14 07:04:23,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40385960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:23,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:23,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:04:23,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89488167] [2022-12-14 07:04:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:23,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:04:23,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:23,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:04:23,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:23,974 INFO L87 Difference]: Start difference. First operand 36698 states and 59328 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:26,747 INFO L93 Difference]: Finished difference Result 67594 states and 109453 transitions. [2022-12-14 07:04:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:04:26,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 80 [2022-12-14 07:04:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:26,984 INFO L225 Difference]: With dead ends: 67594 [2022-12-14 07:04:26,984 INFO L226 Difference]: Without dead ends: 67531 [2022-12-14 07:04:26,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:04:27,000 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 37 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:27,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 345 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67531 states. [2022-12-14 07:04:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67531 to 67526. [2022-12-14 07:04:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67526 states, 52194 states have (on average 1.4878146913438326) internal successors, (77655), 52195 states have internal predecessors, (77655), 15314 states have call successors, (15314), 17 states have call predecessors, (15314), 17 states have return successors, (15313), 15313 states have call predecessors, (15313), 15313 states have call successors, (15313) [2022-12-14 07:04:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67526 states to 67526 states and 108282 transitions. [2022-12-14 07:04:30,430 INFO L78 Accepts]: Start accepts. Automaton has 67526 states and 108282 transitions. Word has length 80 [2022-12-14 07:04:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:30,430 INFO L495 AbstractCegarLoop]: Abstraction has 67526 states and 108282 transitions. [2022-12-14 07:04:30,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:04:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 67526 states and 108282 transitions. [2022-12-14 07:04:30,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 07:04:30,442 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:30,443 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:04:30,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 07:04:30,443 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1611081572, now seen corresponding path program 1 times [2022-12-14 07:04:30,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:30,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063797825] [2022-12-14 07:04:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:30,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:31,446 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 07:04:31,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:31,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063797825] [2022-12-14 07:04:31,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063797825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:31,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:31,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-14 07:04:31,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959810757] [2022-12-14 07:04:31,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:31,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 07:04:31,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:31,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 07:04:31,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-12-14 07:04:31,449 INFO L87 Difference]: Start difference. First operand 67526 states and 108282 transitions. Second operand has 19 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-14 07:04:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:35,559 INFO L93 Difference]: Finished difference Result 67611 states and 108400 transitions. [2022-12-14 07:04:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 07:04:35,560 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 81 [2022-12-14 07:04:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:35,726 INFO L225 Difference]: With dead ends: 67611 [2022-12-14 07:04:35,726 INFO L226 Difference]: Without dead ends: 67565 [2022-12-14 07:04:35,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2022-12-14 07:04:35,742 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 269 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:35,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1963 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 07:04:35,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67565 states. [2022-12-14 07:04:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67565 to 67543. [2022-12-14 07:04:39,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67543 states, 52204 states have (on average 1.4877020917937323) internal successors, (77664), 52204 states have internal predecessors, (77664), 15318 states have call successors, (15318), 21 states have call predecessors, (15318), 20 states have return successors, (15317), 15317 states have call predecessors, (15317), 15317 states have call successors, (15317) [2022-12-14 07:04:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67543 states to 67543 states and 108299 transitions. [2022-12-14 07:04:39,873 INFO L78 Accepts]: Start accepts. Automaton has 67543 states and 108299 transitions. Word has length 81 [2022-12-14 07:04:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:39,874 INFO L495 AbstractCegarLoop]: Abstraction has 67543 states and 108299 transitions. [2022-12-14 07:04:39,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-14 07:04:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 67543 states and 108299 transitions. [2022-12-14 07:04:39,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 07:04:39,920 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:39,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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] [2022-12-14 07:04:39,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 07:04:39,920 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash 894823688, now seen corresponding path program 1 times [2022-12-14 07:04:39,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:39,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492378071] [2022-12-14 07:04:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:39,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 07:04:40,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:40,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492378071] [2022-12-14 07:04:40,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492378071] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:40,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:40,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:04:40,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090443276] [2022-12-14 07:04:40,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:40,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:04:40,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:04:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:04:40,028 INFO L87 Difference]: Start difference. First operand 67543 states and 108299 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 07:04:42,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:42,782 INFO L93 Difference]: Finished difference Result 67579 states and 108336 transitions. [2022-12-14 07:04:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:04:42,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 114 [2022-12-14 07:04:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:43,078 INFO L225 Difference]: With dead ends: 67579 [2022-12-14 07:04:43,078 INFO L226 Difference]: Without dead ends: 67543 [2022-12-14 07:04:43,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:04:43,093 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 14 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:43,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 647 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:04:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67543 states. [2022-12-14 07:04:46,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67543 to 67543. [2022-12-14 07:04:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67543 states, 52204 states have (on average 1.4876829361734734) internal successors, (77663), 52204 states have internal predecessors, (77663), 15318 states have call successors, (15318), 21 states have call predecessors, (15318), 20 states have return successors, (15317), 15317 states have call predecessors, (15317), 15317 states have call successors, (15317) [2022-12-14 07:04:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67543 states to 67543 states and 108298 transitions. [2022-12-14 07:04:46,548 INFO L78 Accepts]: Start accepts. Automaton has 67543 states and 108298 transitions. Word has length 114 [2022-12-14 07:04:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:46,549 INFO L495 AbstractCegarLoop]: Abstraction has 67543 states and 108298 transitions. [2022-12-14 07:04:46,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 07:04:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 67543 states and 108298 transitions. [2022-12-14 07:04:46,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-14 07:04:46,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:46,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 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] [2022-12-14 07:04:46,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 07:04:46,594 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:46,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:46,594 INFO L85 PathProgramCache]: Analyzing trace with hash 547251007, now seen corresponding path program 1 times [2022-12-14 07:04:46,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:46,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535715897] [2022-12-14 07:04:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:46,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 07:04:46,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:46,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535715897] [2022-12-14 07:04:46,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535715897] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:04:46,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:04:46,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:04:46,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051493085] [2022-12-14 07:04:46,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:04:46,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:04:46,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:46,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:04:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:04:46,758 INFO L87 Difference]: Start difference. First operand 67543 states and 108298 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-14 07:04:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:50,144 INFO L93 Difference]: Finished difference Result 67575 states and 108327 transitions. [2022-12-14 07:04:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:04:50,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 119 [2022-12-14 07:04:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:50,307 INFO L225 Difference]: With dead ends: 67575 [2022-12-14 07:04:50,307 INFO L226 Difference]: Without dead ends: 67549 [2022-12-14 07:04:50,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 07:04:50,324 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 134 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:50,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 315 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:04:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67549 states. [2022-12-14 07:04:53,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67549 to 67549. [2022-12-14 07:04:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67549 states, 52207 states have (on average 1.4876357576570192) internal successors, (77665), 52207 states have internal predecessors, (77665), 15318 states have call successors, (15318), 24 states have call predecessors, (15318), 23 states have return successors, (15317), 15317 states have call predecessors, (15317), 15317 states have call successors, (15317) [2022-12-14 07:04:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67549 states to 67549 states and 108300 transitions. [2022-12-14 07:04:54,202 INFO L78 Accepts]: Start accepts. Automaton has 67549 states and 108300 transitions. Word has length 119 [2022-12-14 07:04:54,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:54,202 INFO L495 AbstractCegarLoop]: Abstraction has 67549 states and 108300 transitions. [2022-12-14 07:04:54,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-14 07:04:54,202 INFO L276 IsEmpty]: Start isEmpty. Operand 67549 states and 108300 transitions. [2022-12-14 07:04:54,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 07:04:54,261 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:54,262 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-12-14 07:04:54,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 07:04:54,262 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:04:54,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:54,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1082387207, now seen corresponding path program 1 times [2022-12-14 07:04:54,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:54,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253607797] [2022-12-14 07:04:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:54,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 07:04:56,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:04:56,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253607797] [2022-12-14 07:04:56,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253607797] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:04:56,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052445266] [2022-12-14 07:04:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:56,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:04:56,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:04:56,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:04:56,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:04:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:04:56,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-14 07:04:56,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:04:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 07:04:57,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:05:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 07:05:02,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052445266] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:05:02,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2063353702] [2022-12-14 07:05:02,027 INFO L159 IcfgInterpreter]: Started Sifa with 98 locations of interest [2022-12-14 07:05:02,027 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:05:02,027 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:05:02,027 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:05:02,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:05:47,460 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 07:05:47,738 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 07:05:48,013 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-12-14 07:05:50,507 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 522 for LOIs [2022-12-14 07:06:17,401 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 216 for LOIs [2022-12-14 07:06:17,423 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 216 for LOIs [2022-12-14 07:06:17,454 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 216 for LOIs [2022-12-14 07:06:17,482 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 216 for LOIs [2022-12-14 07:06:17,511 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 472 for LOIs [2022-12-14 07:06:21,409 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 412 for LOIs [2022-12-14 07:06:21,640 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 216 for LOIs [2022-12-14 07:06:21,668 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:09:43,519 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 633 DAG size of output: 505 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:09:52,547 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 643 DAG size of output: 504 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:10:22,664 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 593 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:10:29,374 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1269644#(and (= ~__ste_Client_Keyring1_User2~0 0) (<= |outgoing_sign_#in~msg#1| 2147483647) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing_getClientId_~retValue_acc~16#1| 2147483647) (<= ~queued_message~0 2147483647) (<= 0 (+ |outgoing_~msg#1| 2147483648)) (= ~__ste_email_isEncrypted1~0 0) (= ~__ste_email_subject0~0.offset 0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= 0 (+ 2147483648 |outgoing_getClientId_#res#1|)) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~client#1| 2147483647) (<= |outgoing_mail_#in~client#1| 2147483647) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_#in~client#1| 2147483648)) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~msg#1| 2147483648)) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1| 2147483648)) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 0 (+ 2147483648 |outgoing___utac_acc__SignForward_spec__1_~msg#1|)) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 2147483648)) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 2147483647) (<= |outgoing_~client#1| 2147483647) (<= ~__ste_client_idCounter2~0 3) (<= 0 (+ |outgoing_sign_~privkey~0#1| 2147483648)) (= ~__ste_email_body1~0.offset 0) (<= 0 (+ |outgoing_getClientId_~handle#1| 2147483648)) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= |outgoing_sign_~msg#1| 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= 0 (+ |outgoing_getClientId_~retValue_acc~16#1| 2147483648)) (<= |outgoing_sign_~privkey~0#1| 2147483647) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (= ~__ste_Client_Keyring0_User2~0 0) (<= |outgoing_getClientId_~handle#1| 2147483647) (= ~__ste_ClientAddressBook_size0~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~msg#1| 2147483647) (<= |old(~queued_client~0)| 2147483647) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 2147483647) (<= |outgoing_getClientId_#res#1| 2147483647) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= 0 (+ ~queued_client~0 2147483648)) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= 789 ~__ste_client_privateKey2~0) (<= |outgoing_#in~client#1| 2147483647) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~queued_message~0 2147483648)) (<= 0 (+ |outgoing_mail_~msg#1| 2147483648)) (= ~__ste_email_encryptionKey0~0 0) (<= |outgoing_sign_#in~client#1| 2147483647) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_~client#1| 2147483648)) (= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 (+ |outgoing_mail_#in~msg#1| 2147483648)) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (<= 0 |old(~queue_empty~0)|) (= ~__SELECTED_FEATURE_Forward~0 0) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_~client#1| 2147483647) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 2147483648)) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (<= 0 (+ |outgoing_~client#1| 2147483648)) (<= |outgoing_mail_~__utac__ad__arg2~0#1| 2147483647) (<= 0 (+ |outgoing_mail_~__utac__ad__arg2~0#1| 2147483648)) (<= 0 ~queue_empty~0) (= ~__ste_Client_Keyring2_User1~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_~msg#1| 2147483647) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= |outgoing_mail_~__utac__ad__arg1~0#1| 2147483647) (= ~__ste_client_outbuffer0~0 0) (<= |outgoing_#in~msg#1| 2147483647) (<= 0 (+ |outgoing_#in~client#1| 2147483648)) (<= 0 (+ |outgoing_sign_~msg#1| 2147483648)) (<= 0 (+ |old(~queued_client~0)| 2147483648)) (= ~__SELECTED_FEATURE_Base~0 0) (<= 0 (+ |old(~queued_message~0)| 2147483648)) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing_getClientId_#in~handle#1| 2147483647) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 (+ |outgoing_getClientId_#in~handle#1| 2147483648)) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 0 (+ 2147483648 |outgoing_mail_~client#1|)) (<= |outgoing_mail_~client#1| 2147483647) (= ~__ste_email_subject1~0.base 0) (<= |outgoing_mail_~msg#1| 2147483647) (<= |old(~queue_empty~0)| 1) (<= |outgoing_mail_#in~msg#1| 2147483647) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 0 (+ |outgoing_#in~msg#1| 2147483648)) (<= 0 (+ 2147483648 |outgoing_sign_~tmp~19#1|)) (= ~__ste_Client_Keyring2_User2~0 0) (<= 0 (+ |outgoing_sign_~client#1| 2147483648)) (= ~head~0.base 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~msg#1| 2147483647) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (<= |outgoing_~msg#1| 2147483647) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |old(~queued_message~0)| 2147483647) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing_outgoing__wrappee__AutoResponder_~tmp~14#1| 2147483647) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~tmp~14#1| 2147483648)) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= 0 (+ |outgoing_sign_#in~msg#1| 2147483648)) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_~tmp___0~5#1| 2147483648)) (= ~__ste_Client_AddressBook0_Alias1~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~queued_client~0 2147483647) (<= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~5#1| 2147483647) (<= |outgoing_sign_~client#1| 2147483647) (<= 0 (+ |outgoing_sign_#in~client#1| 2147483648)) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (= |outgoing___utac_acc__SignForward_spec__1_~tmp~12#1| 0) (<= 0 (+ |outgoing_mail_~__utac__ad__arg1~0#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (= ~__ste_email_encryptionKey1~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (<= 0 (+ |outgoing_mail_#in~client#1| 2147483648)) (= ~__ste_ClientKeyring_size2~0 0) (= ~__ste_client_autoResponse2~0 0) (<= |outgoing_outgoing__wrappee__AutoResponder_#in~client#1| 2147483647) (<= 0 (+ |outgoing_outgoing__wrappee__AutoResponder_~client#1| 2147483648)) (<= |outgoing_sign_~tmp~19#1| 2147483647) (= |#NULL.base| 0))' at error location [2022-12-14 07:10:29,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:10:29,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:10:29,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17, 18] total 67 [2022-12-14 07:10:29,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474498462] [2022-12-14 07:10:29,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:10:29,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-12-14 07:10:29,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:10:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-12-14 07:10:29,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1467, Invalid=21485, Unknown=0, NotChecked=0, Total=22952 [2022-12-14 07:10:29,380 INFO L87 Difference]: Start difference. First operand 67549 states and 108300 transitions. Second operand has 67 states, 48 states have (on average 4.25) internal successors, (204), 53 states have internal predecessors, (204), 34 states have call successors, (68), 8 states have call predecessors, (68), 18 states have return successors, (66), 39 states have call predecessors, (66), 33 states have call successors, (66) [2022-12-14 07:10:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:10:51,080 INFO L93 Difference]: Finished difference Result 100600 states and 161099 transitions. [2022-12-14 07:10:51,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-12-14 07:10:51,081 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 48 states have (on average 4.25) internal successors, (204), 53 states have internal predecessors, (204), 34 states have call successors, (68), 8 states have call predecessors, (68), 18 states have return successors, (66), 39 states have call predecessors, (66), 33 states have call successors, (66) Word has length 127 [2022-12-14 07:10:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:10:51,346 INFO L225 Difference]: With dead ends: 100600 [2022-12-14 07:10:51,346 INFO L226 Difference]: Without dead ends: 100450 [2022-12-14 07:10:51,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 265 SyntacticMatches, 2 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15190 ImplicationChecksByTransitivity, 254.6s TimeCoverageRelationStatistics Valid=2873, Invalid=46189, Unknown=0, NotChecked=0, Total=49062 [2022-12-14 07:10:51,381 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 1387 mSDsluCounter, 5542 mSDsCounter, 0 mSdLazyCounter, 7024 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 5764 SdHoareTripleChecker+Invalid, 7852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 7024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:10:51,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 5764 Invalid, 7852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 7024 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-14 07:10:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100450 states. [2022-12-14 07:11:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100450 to 97519. [2022-12-14 07:11:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97519 states, 75496 states have (on average 1.467667161174102) internal successors, (110803), 75496 states have internal predecessors, (110803), 21991 states have call successors, (21991), 32 states have call predecessors, (21991), 31 states have return successors, (21990), 21990 states have call predecessors, (21990), 21990 states have call successors, (21990) [2022-12-14 07:11:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97519 states to 97519 states and 154784 transitions. [2022-12-14 07:11:05,663 INFO L78 Accepts]: Start accepts. Automaton has 97519 states and 154784 transitions. Word has length 127 [2022-12-14 07:11:05,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:11:05,664 INFO L495 AbstractCegarLoop]: Abstraction has 97519 states and 154784 transitions. [2022-12-14 07:11:05,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 48 states have (on average 4.25) internal successors, (204), 53 states have internal predecessors, (204), 34 states have call successors, (68), 8 states have call predecessors, (68), 18 states have return successors, (66), 39 states have call predecessors, (66), 33 states have call successors, (66) [2022-12-14 07:11:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 97519 states and 154784 transitions. [2022-12-14 07:11:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-14 07:11:05,756 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:11:05,756 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 07:11:05,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:11:05,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 07:11:05,958 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:11:05,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:11:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash -50246127, now seen corresponding path program 1 times [2022-12-14 07:11:05,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:11:05,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893319207] [2022-12-14 07:11:05,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:05,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:11:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-12-14 07:11:06,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:11:06,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893319207] [2022-12-14 07:11:06,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893319207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:11:06,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:11:06,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:11:06,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503704851] [2022-12-14 07:11:06,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:11:06,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:11:06,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:11:06,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:11:06,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:11:06,059 INFO L87 Difference]: Start difference. First operand 97519 states and 154784 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 07:11:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:11:14,352 INFO L93 Difference]: Finished difference Result 128925 states and 205673 transitions. [2022-12-14 07:11:14,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:11:14,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 134 [2022-12-14 07:11:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:11:14,514 INFO L225 Difference]: With dead ends: 128925 [2022-12-14 07:11:14,514 INFO L226 Difference]: Without dead ends: 64640 [2022-12-14 07:11:14,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:11:14,591 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 54 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:11:14,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 413 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:11:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64640 states. [2022-12-14 07:11:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64640 to 64640. [2022-12-14 07:11:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64640 states, 49930 states have (on average 1.4377728820348488) internal successors, (71788), 49930 states have internal predecessors, (71788), 14678 states have call successors, (14678), 32 states have call predecessors, (14678), 31 states have return successors, (14677), 14677 states have call predecessors, (14677), 14677 states have call successors, (14677) [2022-12-14 07:11:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64640 states to 64640 states and 101143 transitions. [2022-12-14 07:11:22,801 INFO L78 Accepts]: Start accepts. Automaton has 64640 states and 101143 transitions. Word has length 134 [2022-12-14 07:11:22,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:11:22,801 INFO L495 AbstractCegarLoop]: Abstraction has 64640 states and 101143 transitions. [2022-12-14 07:11:22,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 07:11:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 64640 states and 101143 transitions. [2022-12-14 07:11:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-14 07:11:22,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:11:22,872 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 07:11:22,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 07:11:22,872 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:11:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:11:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1132208961, now seen corresponding path program 1 times [2022-12-14 07:11:22,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:11:22,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971886828] [2022-12-14 07:11:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:22,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:11:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 07:11:23,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:11:23,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971886828] [2022-12-14 07:11:23,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971886828] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:11:23,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248028625] [2022-12-14 07:11:23,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:23,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:11:23,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:11:23,504 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:11:23,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:11:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:23,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-14 07:11:23,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:11:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 07:11:24,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:11:24,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248028625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:11:24,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:11:24,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19] total 33 [2022-12-14 07:11:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334881418] [2022-12-14 07:11:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:11:24,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 07:11:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:11:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 07:11:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 07:11:24,093 INFO L87 Difference]: Start difference. First operand 64640 states and 101143 transitions. Second operand has 16 states, 12 states have (on average 6.666666666666667) internal successors, (80), 14 states have internal predecessors, (80), 9 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-12-14 07:11:32,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:11:32,715 INFO L93 Difference]: Finished difference Result 64678 states and 101180 transitions. [2022-12-14 07:11:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 07:11:32,716 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 6.666666666666667) internal successors, (80), 14 states have internal predecessors, (80), 9 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 137 [2022-12-14 07:11:32,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:11:32,866 INFO L225 Difference]: With dead ends: 64678 [2022-12-14 07:11:32,866 INFO L226 Difference]: Without dead ends: 64642 [2022-12-14 07:11:32,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2020, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 07:11:32,882 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 141 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:11:32,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1719 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:11:32,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64642 states. [2022-12-14 07:11:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64642 to 64642. [2022-12-14 07:11:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64642 states, 49931 states have (on average 1.437744086839839) internal successors, (71788), 49931 states have internal predecessors, (71788), 14678 states have call successors, (14678), 33 states have call predecessors, (14678), 32 states have return successors, (14677), 14677 states have call predecessors, (14677), 14677 states have call successors, (14677) [2022-12-14 07:11:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64642 states to 64642 states and 101143 transitions. [2022-12-14 07:11:41,141 INFO L78 Accepts]: Start accepts. Automaton has 64642 states and 101143 transitions. Word has length 137 [2022-12-14 07:11:41,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:11:41,141 INFO L495 AbstractCegarLoop]: Abstraction has 64642 states and 101143 transitions. [2022-12-14 07:11:41,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 6.666666666666667) internal successors, (80), 14 states have internal predecessors, (80), 9 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-12-14 07:11:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 64642 states and 101143 transitions. [2022-12-14 07:11:41,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-14 07:11:41,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:11:41,222 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 07:11:41,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 07:11:41,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:11:41,423 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:11:41,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:11:41,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1708082989, now seen corresponding path program 1 times [2022-12-14 07:11:41,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:11:41,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159374047] [2022-12-14 07:11:41,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:41,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:11:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 07:11:43,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:11:43,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159374047] [2022-12-14 07:11:43,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159374047] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:11:43,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721215020] [2022-12-14 07:11:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:11:43,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:11:43,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:11:43,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:11:43,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e1f2d0e-5d4e-4f97-b873-a9fe76ce1cf1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:11:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:11:43,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 190 conjunts are in the unsatisfiable core [2022-12-14 07:11:43,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:11:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:11:46,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:12:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 07:12:05,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721215020] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:12:05,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [500779363] [2022-12-14 07:12:05,916 INFO L159 IcfgInterpreter]: Started Sifa with 101 locations of interest [2022-12-14 07:12:05,917 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:12:05,917 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:12:05,917 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:12:05,917 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:13:03,942 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 07:13:04,219 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 07:13:04,498 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 468 for LOIs [2022-12-14 07:13:50,417 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 418 for LOIs [2022-12-14 07:14:22,740 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 403 for LOIs [2022-12-14 07:14:22,939 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 219 for LOIs [2022-12-14 07:14:22,971 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 219 for LOIs [2022-12-14 07:14:23,001 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 219 for LOIs [2022-12-14 07:14:23,030 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 428 for LOIs [2022-12-14 07:14:23,260 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 223 for LOIs [2022-12-14 07:14:23,294 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 403 for LOIs [2022-12-14 07:14:23,506 INFO L180 IcfgInterpreter]: Interpretation finished