./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product17.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_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/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_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/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_6eed9248-5922-4970-83f6-bc6447ecd5c5/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 922981a69371fe79bea26dd37077d7dd588a5af1cfad53b27080b4988960097d --- 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 07:22:02,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:22:02,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:22:02,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:22:02,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:22:02,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:22:02,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:22:02,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:22:02,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:22:02,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:22:02,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:22:02,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:22:02,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:22:02,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:22:02,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:22:02,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:22:02,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:22:02,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:22:02,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:22:02,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:22:02,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:22:02,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:22:02,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:22:02,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:22:02,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:22:02,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:22:02,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:22:02,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:22:02,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:22:02,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:22:02,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:22:02,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:22:02,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:22:02,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:22:02,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:22:02,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:22:02,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:22:02,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:22:02,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:22:02,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:22:02,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:22:02,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:22:02,690 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:22:02,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:22:02,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:22:02,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:22:02,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:22:02,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:22:02,691 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:22:02,691 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:22:02,691 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:22:02,692 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:22:02,692 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:22:02,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:22:02,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:22:02,692 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:22:02,692 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:22:02,692 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:22:02,692 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:22:02,692 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:22:02,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:22:02,693 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:22:02,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:22:02,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:22:02,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:22:02,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:22:02,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:22:02,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:22:02,694 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:22:02,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:22:02,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:22:02,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:22:02,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:22:02,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:22:02,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:22:02,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:22:02,694 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:22:02,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:22:02,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:22:02,695 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:22:02,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:22:02,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:22:02,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:22:02,695 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_6eed9248-5922-4970-83f6-bc6447ecd5c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 922981a69371fe79bea26dd37077d7dd588a5af1cfad53b27080b4988960097d [2022-12-14 07:22:02,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:22:02,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:22:02,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:22:02,909 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:22:02,909 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:22:02,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_product17.cil.c [2022-12-14 07:22:05,550 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:22:05,769 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:22:05,770 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/sv-benchmarks/c/product-lines/email_spec4_product17.cil.c [2022-12-14 07:22:05,781 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/data/f62e90259/bbf161bcd31e4d769d1adbb17c1b73e3/FLAG850d20273 [2022-12-14 07:22:05,791 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/data/f62e90259/bbf161bcd31e4d769d1adbb17c1b73e3 [2022-12-14 07:22:05,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:22:05,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:22:05,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:22:05,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:22:05,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:22:05,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:22:05" (1/1) ... [2022-12-14 07:22:05,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a336d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:05, skipping insertion in model container [2022-12-14 07:22:05,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:22:05" (1/1) ... [2022-12-14 07:22:05,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:22:05,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:22:05,955 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,065 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,066 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,069 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,091 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,095 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,095 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,097 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,125 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_6eed9248-5922-4970-83f6-bc6447ecd5c5/sv-benchmarks/c/product-lines/email_spec4_product17.cil.c[45969,45982] [2022-12-14 07:22:06,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:22:06,170 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:22:06,179 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,197 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,197 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,199 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,202 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,203 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,203 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,204 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:06,214 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_6eed9248-5922-4970-83f6-bc6447ecd5c5/sv-benchmarks/c/product-lines/email_spec4_product17.cil.c[45969,45982] [2022-12-14 07:22:06,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:22:06,246 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:22:06,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06 WrapperNode [2022-12-14 07:22:06,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:22:06,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:22:06,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:22:06,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:22:06,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,295 INFO L138 Inliner]: procedures = 127, calls = 208, calls flagged for inlining = 53, calls inlined = 46, statements flattened = 906 [2022-12-14 07:22:06,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:22:06,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:22:06,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:22:06,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:22:06,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,342 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:22:06,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:22:06,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:22:06,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:22:06,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (1/1) ... [2022-12-14 07:22:06,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:22:06,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:22:06,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:22:06,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:22:06,411 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 07:22:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 07:22:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 07:22:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 07:22:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 07:22:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 07:22:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-12-14 07:22:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-12-14 07:22:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 07:22:06,412 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 07:22:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 07:22:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 07:22:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 07:22:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 07:22:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 07:22:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 07:22:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 07:22:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 07:22:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 07:22:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 07:22:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 07:22:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 07:22:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 07:22:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 07:22:06,414 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 07:22:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:22:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 07:22:06,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 07:22:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 07:22:06,414 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 07:22:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 07:22:06,414 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 07:22:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 07:22:06,414 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 07:22:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 07:22:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 07:22:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 07:22:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 07:22:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 07:22:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 07:22:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 07:22:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 07:22:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:22:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 07:22:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 07:22:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 07:22:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 07:22:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:22:06,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:22:06,570 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:22:06,571 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:22:07,083 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:22:07,396 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:22:07,396 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:22:07,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:22:07 BoogieIcfgContainer [2022-12-14 07:22:07,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:22:07,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:22:07,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:22:07,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:22:07,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:22:05" (1/3) ... [2022-12-14 07:22:07,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31399db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:22:07, skipping insertion in model container [2022-12-14 07:22:07,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:06" (2/3) ... [2022-12-14 07:22:07,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31399db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:22:07, skipping insertion in model container [2022-12-14 07:22:07,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:22:07" (3/3) ... [2022-12-14 07:22:07,405 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product17.cil.c [2022-12-14 07:22:07,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:22:07,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:22:07,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:22:07,469 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;@2c2e4195, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:22:07,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:22:07,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 07:22:07,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 07:22:07,482 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:07,482 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] [2022-12-14 07:22:07,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:07,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:07,487 INFO L85 PathProgramCache]: Analyzing trace with hash -423403743, now seen corresponding path program 1 times [2022-12-14 07:22:07,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:07,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339537693] [2022-12-14 07:22:07,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:07,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:07,760 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 07:22:07,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:07,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339537693] [2022-12-14 07:22:07,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339537693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:07,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:22:07,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:22:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110005192] [2022-12-14 07:22:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:07,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:22:07,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:22:07,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:22:07,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:22:07,790 INFO L87 Difference]: Start difference. First operand has 173 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:22:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:07,905 INFO L93 Difference]: Finished difference Result 254 states and 335 transitions. [2022-12-14 07:22:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:22:07,907 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-12-14 07:22:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:07,918 INFO L225 Difference]: With dead ends: 254 [2022-12-14 07:22:07,918 INFO L226 Difference]: Without dead ends: 170 [2022-12-14 07:22:07,922 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 07:22:07,925 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:07,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:22:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-12-14 07:22:07,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-12-14 07:22:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 97 states have (on average 1.2989690721649485) internal successors, (126), 99 states have internal predecessors, (126), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 07:22:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 225 transitions. [2022-12-14 07:22:07,973 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 225 transitions. Word has length 65 [2022-12-14 07:22:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:07,975 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 225 transitions. [2022-12-14 07:22:07,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:22:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 225 transitions. [2022-12-14 07:22:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 07:22:07,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:07,979 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] [2022-12-14 07:22:07,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:22:07,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:07,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:07,980 INFO L85 PathProgramCache]: Analyzing trace with hash 745965244, now seen corresponding path program 1 times [2022-12-14 07:22:07,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:07,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547064303] [2022-12-14 07:22:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:07,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:08,138 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 07:22:08,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:08,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547064303] [2022-12-14 07:22:08,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547064303] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:08,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:22:08,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:22:08,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38818786] [2022-12-14 07:22:08,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:08,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:22:08,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:22:08,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:22:08,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:22:08,142 INFO L87 Difference]: Start difference. First operand 170 states and 225 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:22:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:08,252 INFO L93 Difference]: Finished difference Result 250 states and 320 transitions. [2022-12-14 07:22:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:22:08,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-12-14 07:22:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:08,255 INFO L225 Difference]: With dead ends: 250 [2022-12-14 07:22:08,255 INFO L226 Difference]: Without dead ends: 172 [2022-12-14 07:22:08,256 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 07:22:08,258 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:08,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:22:08,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-12-14 07:22:08,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-12-14 07:22:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 99 states have (on average 1.292929292929293) internal successors, (128), 101 states have internal predecessors, (128), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-12-14 07:22:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 227 transitions. [2022-12-14 07:22:08,277 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 227 transitions. Word has length 66 [2022-12-14 07:22:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:08,278 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 227 transitions. [2022-12-14 07:22:08,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:22:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 227 transitions. [2022-12-14 07:22:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 07:22:08,281 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:08,281 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, 1, 1, 1, 1, 1, 1] [2022-12-14 07:22:08,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:22:08,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:08,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1723743158, now seen corresponding path program 1 times [2022-12-14 07:22:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:08,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239034137] [2022-12-14 07:22:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:08,357 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 07:22:08,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:08,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239034137] [2022-12-14 07:22:08,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239034137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:08,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:22:08,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:22:08,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958650129] [2022-12-14 07:22:08,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:08,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:22:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:22:08,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:22:08,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:22:08,359 INFO L87 Difference]: Start difference. First operand 172 states and 227 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:22:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:08,440 INFO L93 Difference]: Finished difference Result 379 states and 521 transitions. [2022-12-14 07:22:08,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:22:08,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2022-12-14 07:22:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:08,442 INFO L225 Difference]: With dead ends: 379 [2022-12-14 07:22:08,442 INFO L226 Difference]: Without dead ends: 225 [2022-12-14 07:22:08,443 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 07:22:08,444 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 59 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:08,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 401 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:22:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-12-14 07:22:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 220. [2022-12-14 07:22:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 133 states have (on average 1.3759398496240602) internal successors, (183), 135 states have internal predecessors, (183), 64 states have call successors, (64), 22 states have call predecessors, (64), 22 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-12-14 07:22:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 310 transitions. [2022-12-14 07:22:08,458 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 310 transitions. Word has length 71 [2022-12-14 07:22:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:08,459 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 310 transitions. [2022-12-14 07:22:08,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:22:08,459 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 310 transitions. [2022-12-14 07:22:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 07:22:08,460 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:08,461 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, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:22:08,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:22:08,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:08,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:08,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1911324998, now seen corresponding path program 1 times [2022-12-14 07:22:08,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:08,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851150353] [2022-12-14 07:22:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:08,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:08,570 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 07:22:08,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:08,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851150353] [2022-12-14 07:22:08,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851150353] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:22:08,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372237813] [2022-12-14 07:22:08,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:08,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:22:08,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:22:08,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:22:08,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:22:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:08,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:22:08,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:08,845 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 07:22:08,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:22:08,898 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 07:22:08,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372237813] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:22:08,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1293534176] [2022-12-14 07:22:08,917 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-12-14 07:22:08,917 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:22:08,920 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:22:08,925 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:22:08,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:22:37,772 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:22:38,061 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 07:22:38,350 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 466 for LOIs [2022-12-14 07:23:03,484 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2022-12-14 07:23:03,771 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 464 for LOIs [2022-12-14 07:23:09,116 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 244 for LOIs [2022-12-14 07:23:09,156 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 248 for LOIs [2022-12-14 07:23:12,942 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 439 for LOIs [2022-12-14 07:23:13,201 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-12-14 07:23:13,819 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 241 for LOIs [2022-12-14 07:23:13,854 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:24:11,340 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 561 DAG size of output: 429 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:25:13,050 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2984#(and (<= 1 |outgoing__wrappee__Keys_~client#1|) (<= |outgoing__wrappee__Keys_mail_~msg#1| 1) (= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp~0#1| ~__ste_client_privateKey0~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (= ~__ste_Client_counter~0 0) (<= 1 |outgoing__wrappee__Keys_mail_~__utac__ad__arg1~0#1|) (<= |outgoing__wrappee__Keys_mail_~__utac__ad__arg2~0#1| 1) (= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp~0#1| 0) (<= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_client_autoResponse1~0 0) (<= |outgoing__wrappee__Keys_mail_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 1 |outgoing__wrappee__Keys_~msg#1|) (<= ~__ste_client_idCounter2~0 3) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (<= 0 (+ |outgoing__wrappee__Keys_~tmp~7#1| 2147483648)) (= ~__SELECTED_FEATURE_Encrypt~0 0) (<= |outgoing__wrappee__Keys_getClientId_~retValue_acc~16#1| 2147483647) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (<= 0 ~__SELECTED_FEATURE_AutoResponder~0) (= ~__ste_email_body0~0.offset 0) (<= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 ~__ste_email_isSigned1~0) (<= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= ~__ste_Client_Keyring1_PublicKey0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing__wrappee__Keys_mail_~client#1| 1) (<= ~__ste_Client_AddressBook2_Address0~0 0) (<= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_email_id0~0 0) (<= 0 ~__ste_client_name2~0.offset) (= ~head~0.offset 0) (<= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~__ste_Client_AddressBook2_Alias1~0 0) (<= |outgoing__wrappee__Keys_getClientId_#res#1| 2147483647) (<= 0 ~__GUIDSL_ROOT_PRODUCTION~0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~client#1| 1) (<= ~__ste_Email_counter~0 0) (<= ~__ste_Client_Keyring2_User2~0 0) (<= ~__ste_email_body1~0.offset 0) (<= ~__ste_client_privateKey2~0 789) (<= 0 ~__SELECTED_FEATURE_Decrypt~0) (<= ~queue_empty~0 1) (<= 0 ~__ste_Client_AddressBook2_Alias1~0) (<= 0 ~__ste_Client_Keyring2_User2~0) (<= 0 ~__ste_Client_Keyring1_User2~0) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |#NULL.offset| 0) (<= 0 ~__ste_Client_Keyring1_User0~0) (<= 0 ~__SELECTED_FEATURE_AddressBook~0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing__wrappee__Keys_mail_~__utac__ad__arg1~0#1| 1) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 ~__ste_email_id1~0) (<= ~__ste_Client_AddressBook0_Address1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (<= 1 |outgoing__wrappee__Keys_mail_~msg#1|) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 0 ~__ste_Client_AddressBook2_Address1~0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~0#1| 1) (<= 0 ~__ste_client_name0~0.offset) (<= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= ~__ste_client_name1~0.base 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~msg#1|) (<= ~__SELECTED_FEATURE_AddressBook~0 0) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= 1 |outgoing__wrappee__Keys_getClientId_#in~handle#1|) (<= ~__ste_Client_AddressBook0_Address0~0 0) (<= 1 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~client#1|) (= 3 ~chuck~0) (<= 0 ~__ste_email_signKey1~0) (<= 0 ~__ste_email_body1~0.offset) (<= 1 ~queue_empty~0) (<= 0 (+ |outgoing__wrappee__Keys_getClientId_#res#1| 2147483648)) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_client_name2~0.offset 0) (<= ~__ste_email_isSigned1~0 0) (<= 0 ~__ste_Email_counter~0) (<= ~__ste_email_subject0~0.offset 0) (<= 1 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= ~__ste_ClientKeyring_size1~0 0) (<= |outgoing__wrappee__Keys_getClientId_#in~handle#1| 1) (<= ~__ste_Client_Keyring1_User2~0 0) (<= 0 ~head~0.base) (<= |outgoing__wrappee__Keys_~msg#1| 1) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 1 |outgoing__wrappee__Keys_getClientId_~handle#1|) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~client#1| 1) (= ~__ste_Client_Keyring2_User0~0 0) (<= |outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_subject0~0.offset) (= ~rjh~0 2) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= 0 ~__SELECTED_FEATURE_Keys~0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 1 |outgoing__wrappee__Keys_mail_#in~client#1|) (<= 0 ~__ste_Client_Keyring1_PublicKey0~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 0 ~__ste_ClientKeyring_size1~0) (<= 0 ~__ste_client_forwardReceiver2~0) (= ~__ste_client_name2~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Address1~0) (<= ~__ste_email_encryptionKey0~0 0) (<= 1 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~msg#1|) (= ~__ste_email_subject1~0.base 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= ~__ste_email_id1~0 0) (<= 0 ~__ste_Client_AddressBook0_Address0~0) (<= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__Keys_#in~client#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (not (= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~0#1| 0)) (<= ~__ste_Client_AddressBook0_Address2~0 0) (<= 1 |outgoing__wrappee__Keys_mail_~__utac__ad__arg2~0#1|) (<= ~head~0.base 0) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= |outgoing__wrappee__Keys_~tmp~7#1| 2147483647) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (<= 1 |outgoing__wrappee__Keys_#in~msg#1|) (<= 0 ~__ste_Client_AddressBook2_Address0~0) (<= 0 ~__ste_Client_Keyring2_User1~0) (= ~queued_message~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= |outgoing__wrappee__Keys_mail_#in~client#1| 1) (<= 1 |outgoing__wrappee__Keys_mail_~client#1|) (<= ~__ste_client_name0~0.offset 0) (= ~__ste_client_outbuffer1~0 0) (<= |outgoing__wrappee__Keys_#in~msg#1| 1) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= 0 |#NULL.offset|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~msg#1| 1) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__Keys_mail_#in~msg#1|) (= ~__ste_client_name0~0.base 0) (<= 0 (+ |outgoing__wrappee__Keys_getClientId_~retValue_acc~16#1| 2147483648)) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= ~__ste_Client_AddressBook2_Address1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= 0 ~__GUIDSL_NON_TERMINAL_main~0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 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 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~0#1|) (<= 0 ~__ste_client_name1~0.base) (<= 1 |outgoing__wrappee__Keys_#in~client#1|) (<= |outgoing__wrappee__Keys_getClientId_~handle#1| 1) (<= 0 ~__ste_email_id0~0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2022-12-14 07:25:13,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:25:13,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:25:13,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 07:25:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988713718] [2022-12-14 07:25:13,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:25:13,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:25:13,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:13,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:25:13,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3135, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 07:25:13,053 INFO L87 Difference]: Start difference. First operand 220 states and 310 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 07:25:13,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:13,243 INFO L93 Difference]: Finished difference Result 573 states and 870 transitions. [2022-12-14 07:25:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:25:13,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 72 [2022-12-14 07:25:13,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:13,246 INFO L225 Difference]: With dead ends: 573 [2022-12-14 07:25:13,246 INFO L226 Difference]: Without dead ends: 495 [2022-12-14 07:25:13,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 119.1s TimeCoverageRelationStatistics Valid=171, Invalid=3135, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 07:25:13,248 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 171 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:13,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 927 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-12-14 07:25:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 480. [2022-12-14 07:25:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 314 states have (on average 1.4936305732484076) internal successors, (469), 316 states have internal predecessors, (469), 143 states have call successors, (143), 22 states have call predecessors, (143), 22 states have return successors, (142), 141 states have call predecessors, (142), 142 states have call successors, (142) [2022-12-14 07:25:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 754 transitions. [2022-12-14 07:25:13,276 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 754 transitions. Word has length 72 [2022-12-14 07:25:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:13,276 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 754 transitions. [2022-12-14 07:25:13,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 07:25:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 754 transitions. [2022-12-14 07:25:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 07:25:13,279 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:13,279 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, 1, 1, 1, 1, 1, 1] [2022-12-14 07:25:13,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:25:13,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eed9248-5922-4970-83f6-bc6447ecd5c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:25:13,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:13,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:13,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1492884899, now seen corresponding path program 1 times [2022-12-14 07:25:13,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:13,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432534953] [2022-12-14 07:25:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:25:13,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:13,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432534953] [2022-12-14 07:25:13,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432534953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:13,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:13,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:13,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553505090] [2022-12-14 07:25:13,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:13,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:13,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:13,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:13,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:13,571 INFO L87 Difference]: Start difference. First operand 480 states and 754 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:13,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:13,667 INFO L93 Difference]: Finished difference Result 1190 states and 1906 transitions. [2022-12-14 07:25:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:13,667 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 78 [2022-12-14 07:25:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:13,670 INFO L225 Difference]: With dead ends: 1190 [2022-12-14 07:25:13,670 INFO L226 Difference]: Without dead ends: 742 [2022-12-14 07:25:13,671 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 07:25:13,672 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 57 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:13,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 410 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:13,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-12-14 07:25:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 737. [2022-12-14 07:25:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 492 states have (on average 1.508130081300813) internal successors, (742), 494 states have internal predecessors, (742), 222 states have call successors, (222), 22 states have call predecessors, (222), 22 states have return successors, (221), 220 states have call predecessors, (221), 221 states have call successors, (221) [2022-12-14 07:25:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1185 transitions. [2022-12-14 07:25:13,702 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1185 transitions. Word has length 78 [2022-12-14 07:25:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:13,703 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1185 transitions. [2022-12-14 07:25:13,703 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:13,703 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1185 transitions. [2022-12-14 07:25:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 07:25:13,706 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:13,706 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 07:25:13,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:25:13,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:13,707 INFO L85 PathProgramCache]: Analyzing trace with hash 382735754, now seen corresponding path program 1 times [2022-12-14 07:25:13,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:13,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300904756] [2022-12-14 07:25:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:13,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:13,761 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 07:25:13,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:13,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300904756] [2022-12-14 07:25:13,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300904756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:13,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:13,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:13,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951780558] [2022-12-14 07:25:13,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:13,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:13,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:13,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:13,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:13,763 INFO L87 Difference]: Start difference. First operand 737 states and 1185 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:13,877 INFO L93 Difference]: Finished difference Result 1812 states and 2953 transitions. [2022-12-14 07:25:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:13,877 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 79 [2022-12-14 07:25:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:13,882 INFO L225 Difference]: With dead ends: 1812 [2022-12-14 07:25:13,882 INFO L226 Difference]: Without dead ends: 1137 [2022-12-14 07:25:13,883 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 07:25:13,884 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 55 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:13,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 396 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-12-14 07:25:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1132. [2022-12-14 07:25:13,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 768 states have (on average 1.5130208333333333) internal successors, (1162), 770 states have internal predecessors, (1162), 341 states have call successors, (341), 22 states have call predecessors, (341), 22 states have return successors, (340), 339 states have call predecessors, (340), 340 states have call successors, (340) [2022-12-14 07:25:13,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1843 transitions. [2022-12-14 07:25:13,930 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1843 transitions. Word has length 79 [2022-12-14 07:25:13,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:13,930 INFO L495 AbstractCegarLoop]: Abstraction has 1132 states and 1843 transitions. [2022-12-14 07:25:13,930 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:13,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1843 transitions. [2022-12-14 07:25:13,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 07:25:13,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:13,934 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 07:25:13,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:25:13,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:13,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash -790392229, now seen corresponding path program 1 times [2022-12-14 07:25:13,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:13,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194473727] [2022-12-14 07:25:13,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:13,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:14,007 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 07:25:14,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:14,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194473727] [2022-12-14 07:25:14,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194473727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:14,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:14,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:14,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297978535] [2022-12-14 07:25:14,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:14,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:14,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:14,010 INFO L87 Difference]: Start difference. First operand 1132 states and 1843 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:14,132 INFO L93 Difference]: Finished difference Result 2715 states and 4465 transitions. [2022-12-14 07:25:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:14,133 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 80 [2022-12-14 07:25:14,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:14,139 INFO L225 Difference]: With dead ends: 2715 [2022-12-14 07:25:14,139 INFO L226 Difference]: Without dead ends: 1725 [2022-12-14 07:25:14,142 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 07:25:14,142 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 53 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:14,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 391 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2022-12-14 07:25:14,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1720. [2022-12-14 07:25:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1194 states have (on average 1.5159128978224456) internal successors, (1810), 1196 states have internal predecessors, (1810), 503 states have call successors, (503), 22 states have call predecessors, (503), 22 states have return successors, (502), 501 states have call predecessors, (502), 502 states have call successors, (502) [2022-12-14 07:25:14,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2815 transitions. [2022-12-14 07:25:14,215 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2815 transitions. Word has length 80 [2022-12-14 07:25:14,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:14,215 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2815 transitions. [2022-12-14 07:25:14,215 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:14,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2815 transitions. [2022-12-14 07:25:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 07:25:14,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:14,220 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 07:25:14,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:25:14,220 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:14,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash -555415767, now seen corresponding path program 1 times [2022-12-14 07:25:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:14,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197678810] [2022-12-14 07:25:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:14,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:14,279 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 07:25:14,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:14,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197678810] [2022-12-14 07:25:14,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197678810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:14,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:14,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377926039] [2022-12-14 07:25:14,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:14,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:14,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:14,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:14,282 INFO L87 Difference]: Start difference. First operand 1720 states and 2815 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:14,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:14,432 INFO L93 Difference]: Finished difference Result 4100 states and 6773 transitions. [2022-12-14 07:25:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:14,432 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2022-12-14 07:25:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:14,442 INFO L225 Difference]: With dead ends: 4100 [2022-12-14 07:25:14,442 INFO L226 Difference]: Without dead ends: 2659 [2022-12-14 07:25:14,446 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 07:25:14,447 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 51 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:14,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 391 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2022-12-14 07:25:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2654. [2022-12-14 07:25:14,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 1883 states have (on average 1.516728624535316) internal successors, (2856), 1885 states have internal predecessors, (2856), 748 states have call successors, (748), 22 states have call predecessors, (748), 22 states have return successors, (747), 746 states have call predecessors, (747), 747 states have call successors, (747) [2022-12-14 07:25:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 4351 transitions. [2022-12-14 07:25:14,588 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 4351 transitions. Word has length 81 [2022-12-14 07:25:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:14,588 INFO L495 AbstractCegarLoop]: Abstraction has 2654 states and 4351 transitions. [2022-12-14 07:25:14,589 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 4351 transitions. [2022-12-14 07:25:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 07:25:14,594 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:14,594 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, 1] [2022-12-14 07:25:14,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 07:25:14,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:14,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1076026239, now seen corresponding path program 1 times [2022-12-14 07:25:14,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:14,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934360222] [2022-12-14 07:25:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:14,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:14,647 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 07:25:14,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:14,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934360222] [2022-12-14 07:25:14,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934360222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:14,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:14,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:14,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612820997] [2022-12-14 07:25:14,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:14,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:14,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:14,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:14,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:14,649 INFO L87 Difference]: Start difference. First operand 2654 states and 4351 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:14,891 INFO L93 Difference]: Finished difference Result 6616 states and 10933 transitions. [2022-12-14 07:25:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:14,891 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2022-12-14 07:25:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:14,906 INFO L225 Difference]: With dead ends: 6616 [2022-12-14 07:25:14,906 INFO L226 Difference]: Without dead ends: 4384 [2022-12-14 07:25:14,911 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 07:25:14,912 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 49 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:14,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 410 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2022-12-14 07:25:15,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 4379. [2022-12-14 07:25:15,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 3115 states have (on average 1.5052969502407705) internal successors, (4689), 3117 states have internal predecessors, (4689), 1241 states have call successors, (1241), 22 states have call predecessors, (1241), 22 states have return successors, (1240), 1239 states have call predecessors, (1240), 1240 states have call successors, (1240) [2022-12-14 07:25:15,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 7170 transitions. [2022-12-14 07:25:15,121 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 7170 transitions. Word has length 82 [2022-12-14 07:25:15,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:15,121 INFO L495 AbstractCegarLoop]: Abstraction has 4379 states and 7170 transitions. [2022-12-14 07:25:15,121 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 7170 transitions. [2022-12-14 07:25:15,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 07:25:15,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:15,129 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, 1, 1] [2022-12-14 07:25:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:25:15,130 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash 482960901, now seen corresponding path program 1 times [2022-12-14 07:25:15,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:15,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659598519] [2022-12-14 07:25:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:15,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:15,185 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 07:25:15,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:15,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659598519] [2022-12-14 07:25:15,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659598519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:15,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:15,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592514750] [2022-12-14 07:25:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:15,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:15,187 INFO L87 Difference]: Start difference. First operand 4379 states and 7170 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:15,530 INFO L93 Difference]: Finished difference Result 11032 states and 18218 transitions. [2022-12-14 07:25:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:15,530 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2022-12-14 07:25:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:15,556 INFO L225 Difference]: With dead ends: 11032 [2022-12-14 07:25:15,556 INFO L226 Difference]: Without dead ends: 7341 [2022-12-14 07:25:15,563 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 07:25:15,564 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 47 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:15,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 396 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7341 states. [2022-12-14 07:25:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7341 to 7336. [2022-12-14 07:25:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7336 states, 5250 states have (on average 1.4998095238095237) internal successors, (7874), 5252 states have internal predecessors, (7874), 2063 states have call successors, (2063), 22 states have call predecessors, (2063), 22 states have return successors, (2062), 2061 states have call predecessors, (2062), 2062 states have call successors, (2062) [2022-12-14 07:25:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 11999 transitions. [2022-12-14 07:25:15,961 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 11999 transitions. Word has length 83 [2022-12-14 07:25:15,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:15,961 INFO L495 AbstractCegarLoop]: Abstraction has 7336 states and 11999 transitions. [2022-12-14 07:25:15,962 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 11999 transitions. [2022-12-14 07:25:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 07:25:15,971 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:15,971 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, 1, 1, 1] [2022-12-14 07:25:15,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 07:25:15,972 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:15,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1319949725, now seen corresponding path program 1 times [2022-12-14 07:25:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:15,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254872079] [2022-12-14 07:25:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:15,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:16,022 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 07:25:16,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:16,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254872079] [2022-12-14 07:25:16,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254872079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:16,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:16,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:16,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945904887] [2022-12-14 07:25:16,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:16,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:16,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:16,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:16,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:16,024 INFO L87 Difference]: Start difference. First operand 7336 states and 11999 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:16,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:16,510 INFO L93 Difference]: Finished difference Result 18499 states and 30480 transitions. [2022-12-14 07:25:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:16,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2022-12-14 07:25:16,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:16,544 INFO L225 Difference]: With dead ends: 18499 [2022-12-14 07:25:16,544 INFO L226 Difference]: Without dead ends: 12285 [2022-12-14 07:25:16,555 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 07:25:16,555 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 45 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:16,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 392 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:16,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12285 states. [2022-12-14 07:25:17,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12285 to 12280. [2022-12-14 07:25:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12280 states, 8991 states have (on average 1.5009453898342788) internal successors, (13495), 8993 states have internal predecessors, (13495), 3266 states have call successors, (3266), 22 states have call predecessors, (3266), 22 states have return successors, (3265), 3264 states have call predecessors, (3265), 3265 states have call successors, (3265) [2022-12-14 07:25:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12280 states to 12280 states and 20026 transitions. [2022-12-14 07:25:17,174 INFO L78 Accepts]: Start accepts. Automaton has 12280 states and 20026 transitions. Word has length 84 [2022-12-14 07:25:17,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:17,175 INFO L495 AbstractCegarLoop]: Abstraction has 12280 states and 20026 transitions. [2022-12-14 07:25:17,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 12280 states and 20026 transitions. [2022-12-14 07:25:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 07:25:17,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:17,185 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, 1, 1, 1, 1] [2022-12-14 07:25:17,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 07:25:17,185 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:17,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:17,185 INFO L85 PathProgramCache]: Analyzing trace with hash -403027964, now seen corresponding path program 1 times [2022-12-14 07:25:17,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:17,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123298116] [2022-12-14 07:25:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:17,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:17,245 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 07:25:17,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:17,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123298116] [2022-12-14 07:25:17,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123298116] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:17,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:17,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:17,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278244173] [2022-12-14 07:25:17,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:17,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:17,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:17,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:17,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:17,247 INFO L87 Difference]: Start difference. First operand 12280 states and 20026 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:18,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:18,256 INFO L93 Difference]: Finished difference Result 32503 states and 53342 transitions. [2022-12-14 07:25:18,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:18,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 85 [2022-12-14 07:25:18,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:18,346 INFO L225 Difference]: With dead ends: 32503 [2022-12-14 07:25:18,347 INFO L226 Difference]: Without dead ends: 21797 [2022-12-14 07:25:18,373 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 07:25:18,374 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 43 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:18,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 396 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:18,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21797 states. [2022-12-14 07:25:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21797 to 21792. [2022-12-14 07:25:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21792 states, 16053 states have (on average 1.4930542577711332) internal successors, (23968), 16055 states have internal predecessors, (23968), 5716 states have call successors, (5716), 22 states have call predecessors, (5716), 22 states have return successors, (5715), 5714 states have call predecessors, (5715), 5715 states have call successors, (5715) [2022-12-14 07:25:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21792 states to 21792 states and 35399 transitions. [2022-12-14 07:25:19,384 INFO L78 Accepts]: Start accepts. Automaton has 21792 states and 35399 transitions. Word has length 85 [2022-12-14 07:25:19,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:19,384 INFO L495 AbstractCegarLoop]: Abstraction has 21792 states and 35399 transitions. [2022-12-14 07:25:19,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 21792 states and 35399 transitions. [2022-12-14 07:25:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 07:25:19,400 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:19,400 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, 1, 1, 1, 1, 1] [2022-12-14 07:25:19,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 07:25:19,401 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:19,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:19,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1431195229, now seen corresponding path program 1 times [2022-12-14 07:25:19,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:19,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900969704] [2022-12-14 07:25:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:19,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:19,469 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 07:25:19,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:19,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900969704] [2022-12-14 07:25:19,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900969704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:19,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:19,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778968970] [2022-12-14 07:25:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:19,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:19,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:19,471 INFO L87 Difference]: Start difference. First operand 21792 states and 35399 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:21,284 INFO L93 Difference]: Finished difference Result 59190 states and 96594 transitions. [2022-12-14 07:25:21,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:21,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 86 [2022-12-14 07:25:21,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:21,389 INFO L225 Difference]: With dead ends: 59190 [2022-12-14 07:25:21,390 INFO L226 Difference]: Without dead ends: 39567 [2022-12-14 07:25:21,427 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 07:25:21,428 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 41 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:21,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 397 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39567 states. [2022-12-14 07:25:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39567 to 39562. [2022-12-14 07:25:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39562 states, 29310 states have (on average 1.4822244967587854) internal successors, (43444), 29312 states have internal predecessors, (43444), 10229 states have call successors, (10229), 22 states have call predecessors, (10229), 22 states have return successors, (10228), 10227 states have call predecessors, (10228), 10228 states have call successors, (10228) [2022-12-14 07:25:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39562 states to 39562 states and 63901 transitions. [2022-12-14 07:25:23,192 INFO L78 Accepts]: Start accepts. Automaton has 39562 states and 63901 transitions. Word has length 86 [2022-12-14 07:25:23,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:23,193 INFO L495 AbstractCegarLoop]: Abstraction has 39562 states and 63901 transitions. [2022-12-14 07:25:23,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:23,193 INFO L276 IsEmpty]: Start isEmpty. Operand 39562 states and 63901 transitions. [2022-12-14 07:25:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 07:25:23,204 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:23,204 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, 1, 1, 1, 1, 1, 1] [2022-12-14 07:25:23,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 07:25:23,204 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:23,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:23,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1541597572, now seen corresponding path program 1 times [2022-12-14 07:25:23,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:23,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061361649] [2022-12-14 07:25:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:23,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:23,249 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 07:25:23,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:23,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061361649] [2022-12-14 07:25:23,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061361649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:23,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:23,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:23,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367962614] [2022-12-14 07:25:23,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:23,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:23,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:23,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:23,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:23,251 INFO L87 Difference]: Start difference. First operand 39562 states and 63901 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:26,466 INFO L93 Difference]: Finished difference Result 73088 states and 118229 transitions. [2022-12-14 07:25:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:26,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2022-12-14 07:25:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:26,731 INFO L225 Difference]: With dead ends: 73088 [2022-12-14 07:25:26,731 INFO L226 Difference]: Without dead ends: 73010 [2022-12-14 07:25:26,747 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 07:25:26,748 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 39 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:26,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 396 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73010 states. [2022-12-14 07:25:30,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73010 to 73005. [2022-12-14 07:25:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73005 states, 54385 states have (on average 1.4681621770708835) internal successors, (79846), 54387 states have internal predecessors, (79846), 18597 states have call successors, (18597), 22 states have call predecessors, (18597), 22 states have return successors, (18596), 18595 states have call predecessors, (18596), 18596 states have call successors, (18596) [2022-12-14 07:25:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73005 states to 73005 states and 117039 transitions. [2022-12-14 07:25:30,354 INFO L78 Accepts]: Start accepts. Automaton has 73005 states and 117039 transitions. Word has length 87 [2022-12-14 07:25:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:30,354 INFO L495 AbstractCegarLoop]: Abstraction has 73005 states and 117039 transitions. [2022-12-14 07:25:30,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 73005 states and 117039 transitions. [2022-12-14 07:25:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 07:25:30,370 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:30,370 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, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:25:30,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 07:25:30,370 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:30,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash -494323932, now seen corresponding path program 1 times [2022-12-14 07:25:30,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:30,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573203648] [2022-12-14 07:25:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:30,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:31,550 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 07:25:31,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:31,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573203648] [2022-12-14 07:25:31,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573203648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:31,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:31,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 07:25:31,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170195516] [2022-12-14 07:25:31,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:31,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 07:25:31,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:31,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 07:25:31,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2022-12-14 07:25:31,553 INFO L87 Difference]: Start difference. First operand 73005 states and 117039 transitions. Second operand has 21 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 07:25:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:36,271 INFO L93 Difference]: Finished difference Result 73089 states and 117161 transitions. [2022-12-14 07:25:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 07:25:36,272 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 88 [2022-12-14 07:25:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:36,464 INFO L225 Difference]: With dead ends: 73089 [2022-12-14 07:25:36,464 INFO L226 Difference]: Without dead ends: 73085 [2022-12-14 07:25:36,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 07:25:36,483 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 263 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:36,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 2454 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 07:25:36,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73085 states. [2022-12-14 07:25:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73085 to 73053. [2022-12-14 07:25:40,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73053 states, 54411 states have (on average 1.4680303615077834) internal successors, (79877), 54414 states have internal predecessors, (79877), 18615 states have call successors, (18615), 27 states have call predecessors, (18615), 26 states have return successors, (18612), 18611 states have call predecessors, (18612), 18612 states have call successors, (18612) [2022-12-14 07:25:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73053 states to 73053 states and 117104 transitions. [2022-12-14 07:25:40,687 INFO L78 Accepts]: Start accepts. Automaton has 73053 states and 117104 transitions. Word has length 88 [2022-12-14 07:25:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:40,688 INFO L495 AbstractCegarLoop]: Abstraction has 73053 states and 117104 transitions. [2022-12-14 07:25:40,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 07:25:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand 73053 states and 117104 transitions. [2022-12-14 07:25:40,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-14 07:25:40,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:40,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-12-14 07:25:40,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 07:25:40,762 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:40,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:40,762 INFO L85 PathProgramCache]: Analyzing trace with hash -550360102, now seen corresponding path program 1 times [2022-12-14 07:25:40,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:40,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214242188] [2022-12-14 07:25:40,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:40,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 07:25:40,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:40,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214242188] [2022-12-14 07:25:40,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214242188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:40,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:40,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:25:40,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081673788] [2022-12-14 07:25:40,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:40,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:25:40,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:40,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:25:40,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:25:40,916 INFO L87 Difference]: Start difference. First operand 73053 states and 117104 transitions. Second operand has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 07:25:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:44,020 INFO L93 Difference]: Finished difference Result 73153 states and 117232 transitions. [2022-12-14 07:25:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:25:44,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 128 [2022-12-14 07:25:44,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:44,218 INFO L225 Difference]: With dead ends: 73153 [2022-12-14 07:25:44,218 INFO L226 Difference]: Without dead ends: 73053 [2022-12-14 07:25:44,244 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 07:25:44,245 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 9 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:44,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 748 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:44,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73053 states. [2022-12-14 07:25:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73053 to 73053. [2022-12-14 07:25:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73053 states, 54411 states have (on average 1.467993604234438) internal successors, (79875), 54414 states have internal predecessors, (79875), 18615 states have call successors, (18615), 27 states have call predecessors, (18615), 26 states have return successors, (18612), 18611 states have call predecessors, (18612), 18612 states have call successors, (18612) [2022-12-14 07:25:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73053 states to 73053 states and 117102 transitions. [2022-12-14 07:25:48,423 INFO L78 Accepts]: Start accepts. Automaton has 73053 states and 117102 transitions. Word has length 128 [2022-12-14 07:25:48,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:48,424 INFO L495 AbstractCegarLoop]: Abstraction has 73053 states and 117102 transitions. [2022-12-14 07:25:48,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 07:25:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 73053 states and 117102 transitions. [2022-12-14 07:25:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 07:25:48,495 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:48,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-12-14 07:25:48,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 07:25:48,495 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:48,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -627902517, now seen corresponding path program 1 times [2022-12-14 07:25:48,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:48,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754525768] [2022-12-14 07:25:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 07:25:48,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:48,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754525768] [2022-12-14 07:25:48,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754525768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:48,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:48,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:25:48,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348070016] [2022-12-14 07:25:48,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:48,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:25:48,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:48,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:25:48,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:25:48,640 INFO L87 Difference]: Start difference. First operand 73053 states and 117102 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-12-14 07:25:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:52,370 INFO L93 Difference]: Finished difference Result 73073 states and 117112 transitions. [2022-12-14 07:25:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:25:52,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 133 [2022-12-14 07:25:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:52,371 INFO L225 Difference]: With dead ends: 73073 [2022-12-14 07:25:52,372 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 07:25:52,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:25:52,436 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 180 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:52,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 377 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 07:25:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 07:25:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:25:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 07:25:52,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 133 [2022-12-14 07:25:52,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:52,445 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 07:25:52,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-12-14 07:25:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 07:25:52,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 07:25:52,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 07:25:52,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 07:25:52,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 07:26:10,514 WARN L233 SmtUtils]: Spent 18.00s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:27:35,738 WARN L233 SmtUtils]: Spent 1.42m on a formula simplification that was a NOOP. DAG size: 2394 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:27:55,531 WARN L233 SmtUtils]: Spent 19.78s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:28:14,678 WARN L233 SmtUtils]: Spent 19.14s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:28:33,790 WARN L233 SmtUtils]: Spent 19.10s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:28:52,517 WARN L233 SmtUtils]: Spent 18.33s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:29:10,472 WARN L233 SmtUtils]: Spent 17.94s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:29:30,549 WARN L233 SmtUtils]: Spent 20.07s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:30:39,776 WARN L233 SmtUtils]: Spent 1.14m on a formula simplification that was a NOOP. DAG size: 2165 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:31:48,587 WARN L233 SmtUtils]: Spent 1.15m on a formula simplification that was a NOOP. DAG size: 2165 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:32:06,559 WARN L233 SmtUtils]: Spent 17.97s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:32:24,387 WARN L233 SmtUtils]: Spent 17.82s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:33:30,567 WARN L233 SmtUtils]: Spent 1.10m on a formula simplification that was a NOOP. DAG size: 2165 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:33:48,494 WARN L233 SmtUtils]: Spent 17.91s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:34:54,908 WARN L233 SmtUtils]: Spent 1.11m on a formula simplification that was a NOOP. DAG size: 2165 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:35:13,355 WARN L233 SmtUtils]: Spent 17.95s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:35:31,329 WARN L233 SmtUtils]: Spent 17.96s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-12-14 07:35:49,333 WARN L233 SmtUtils]: Spent 18.00s on a formula simplification that was a NOOP. DAG size: 1129 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)