./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/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_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/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_bfba0751-59e0-4d71-954e-1f24c12cf4d8/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 4aad45d78970842948dd8f2d4a23b330a7c7a053ef8846b1af27e637f96c3ae7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:14:04,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:14:04,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:14:04,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:14:04,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:14:04,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:14:04,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:14:04,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:14:04,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:14:04,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:14:04,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:14:04,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:14:04,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:14:04,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:14:04,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:14:04,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:14:04,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:14:04,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:14:04,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:14:04,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:14:04,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:14:04,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:14:04,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:14:04,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:14:04,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:14:04,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:14:04,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:14:04,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:14:04,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:14:04,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:14:04,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:14:04,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:14:04,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:14:04,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:14:04,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:14:04,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:14:04,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:14:04,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:14:04,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:14:04,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:14:04,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:14:04,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:14:04,836 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:14:04,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:14:04,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:14:04,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:14:04,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:14:04,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:14:04,837 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:14:04,837 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:14:04,837 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:14:04,838 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:14:04,838 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:14:04,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:14:04,838 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:14:04,838 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:14:04,838 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:14:04,839 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:14:04,839 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:14:04,839 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:14:04,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:14:04,840 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:14:04,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:14:04,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:14:04,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:14:04,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:14:04,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:14:04,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:14:04,841 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:14:04,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:14:04,841 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:14:04,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:14:04,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:14:04,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:14:04,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:14:04,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:14:04,842 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:14:04,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:14:04,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:14:04,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:14:04,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:14:04,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:14:04,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:14:04,843 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_bfba0751-59e0-4d71-954e-1f24c12cf4d8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4aad45d78970842948dd8f2d4a23b330a7c7a053ef8846b1af27e637f96c3ae7 [2022-12-14 05:14:05,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:14:05,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:14:05,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:14:05,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:14:05,043 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:14:05,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_product25.cil.c [2022-12-14 05:14:07,656 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:14:07,839 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:14:07,839 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/sv-benchmarks/c/product-lines/email_spec4_product25.cil.c [2022-12-14 05:14:07,851 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/data/8f460d992/4586912c24ab4e879be503e3fa0adc1c/FLAGf3cc6dc5a [2022-12-14 05:14:07,861 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/data/8f460d992/4586912c24ab4e879be503e3fa0adc1c [2022-12-14 05:14:07,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:14:07,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:14:07,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:14:07,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:14:07,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:14:07,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:14:07" (1/1) ... [2022-12-14 05:14:07,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cebd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:07, skipping insertion in model container [2022-12-14 05:14:07,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:14:07" (1/1) ... [2022-12-14 05:14:07,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:14:07,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:14:08,202 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,206 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,207 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,209 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,217 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,277 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,278 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,280 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,285 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,327 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_bfba0751-59e0-4d71-954e-1f24c12cf4d8/sv-benchmarks/c/product-lines/email_spec4_product25.cil.c[63576,63589] [2022-12-14 05:14:08,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:14:08,341 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:14:08,378 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,388 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,389 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,390 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,394 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,404 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,404 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,406 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,409 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:14:08,430 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_bfba0751-59e0-4d71-954e-1f24c12cf4d8/sv-benchmarks/c/product-lines/email_spec4_product25.cil.c[63576,63589] [2022-12-14 05:14:08,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:14:08,450 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:14:08,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08 WrapperNode [2022-12-14 05:14:08,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:14:08,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:14:08,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:14:08,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:14:08,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,503 INFO L138 Inliner]: procedures = 130, calls = 218, calls flagged for inlining = 60, calls inlined = 57, statements flattened = 1060 [2022-12-14 05:14:08,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:14:08,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:14:08,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:14:08,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:14:08,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,536 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:14:08,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:14:08,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:14:08,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:14:08,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (1/1) ... [2022-12-14 05:14:08,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:14:08,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:14:08,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:14:08,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:14:08,605 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 05:14:08,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 05:14:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 05:14:08,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 05:14:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 05:14:08,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 05:14:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-12-14 05:14:08,606 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-12-14 05:14:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 05:14:08,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 05:14:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 05:14:08,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 05:14:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 05:14:08,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 05:14:08,606 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 05:14:08,607 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 05:14:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 05:14:08,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 05:14:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 05:14:08,607 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 05:14:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 05:14:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 05:14:08,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 05:14:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 05:14:08,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 05:14:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:14:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 05:14:08,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 05:14:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 05:14:08,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 05:14:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 05:14:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 05:14:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 05:14:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 05:14:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 05:14:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 05:14:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 05:14:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 05:14:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 05:14:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 05:14:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 05:14:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 05:14:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:14:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 05:14:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 05:14:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 05:14:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 05:14:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:14:08,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:14:08,767 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:14:08,769 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:14:09,345 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:14:09,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:14:09,658 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:14:09,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:14:09 BoogieIcfgContainer [2022-12-14 05:14:09,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:14:09,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:14:09,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:14:09,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:14:09,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:14:07" (1/3) ... [2022-12-14 05:14:09,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f6f0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:14:09, skipping insertion in model container [2022-12-14 05:14:09,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:14:08" (2/3) ... [2022-12-14 05:14:09,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f6f0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:14:09, skipping insertion in model container [2022-12-14 05:14:09,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:14:09" (3/3) ... [2022-12-14 05:14:09,666 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product25.cil.c [2022-12-14 05:14:09,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:14:09,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:14:09,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:14:09,721 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;@6825ff2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:14:09,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:14:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 107 states have (on average 1.3177570093457944) internal successors, (141), 110 states have internal predecessors, (141), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-12-14 05:14:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 05:14:09,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:14:09,738 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 05:14:09,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:14:09,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:14:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash 331169669, now seen corresponding path program 1 times [2022-12-14 05:14:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:14:09,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234424120] [2022-12-14 05:14:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:14:09,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:14:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:14:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:14:10,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:14:10,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234424120] [2022-12-14 05:14:10,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234424120] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:14:10,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:14:10,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:14:10,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644708056] [2022-12-14 05:14:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:14:10,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:14:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:14:10,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:14:10,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:14:10,084 INFO L87 Difference]: Start difference. First operand has 187 states, 107 states have (on average 1.3177570093457944) internal successors, (141), 110 states have internal predecessors, (141), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) 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 05:14:10,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:14:10,214 INFO L93 Difference]: Finished difference Result 282 states and 377 transitions. [2022-12-14 05:14:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:14:10,217 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 05:14:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:14:10,229 INFO L225 Difference]: With dead ends: 282 [2022-12-14 05:14:10,229 INFO L226 Difference]: Without dead ends: 184 [2022-12-14 05:14:10,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:14:10,237 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:14:10,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:14:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-14 05:14:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-12-14 05:14:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 105 states have (on average 1.2857142857142858) internal successors, (135), 107 states have internal predecessors, (135), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 05:14:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 246 transitions. [2022-12-14 05:14:10,295 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 246 transitions. Word has length 65 [2022-12-14 05:14:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:14:10,297 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 246 transitions. [2022-12-14 05:14:10,297 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 05:14:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 246 transitions. [2022-12-14 05:14:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 05:14:10,301 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:14:10,301 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 05:14:10,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:14:10,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:14:10,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:14:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1842954867, now seen corresponding path program 1 times [2022-12-14 05:14:10,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:14:10,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261612108] [2022-12-14 05:14:10,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:14:10,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:14:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:14:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:14:10,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:14:10,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261612108] [2022-12-14 05:14:10,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261612108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:14:10,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:14:10,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:14:10,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285225736] [2022-12-14 05:14:10,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:14:10,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:14:10,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:14:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:14:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:14:10,430 INFO L87 Difference]: Start difference. First operand 184 states and 246 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 05:14:10,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:14:10,524 INFO L93 Difference]: Finished difference Result 278 states and 362 transitions. [2022-12-14 05:14:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:14:10,525 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 05:14:10,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:14:10,527 INFO L225 Difference]: With dead ends: 278 [2022-12-14 05:14:10,527 INFO L226 Difference]: Without dead ends: 186 [2022-12-14 05:14:10,528 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 05:14:10,529 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:14:10,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:14:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-14 05:14:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-12-14 05:14:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 107 states have (on average 1.280373831775701) internal successors, (137), 109 states have internal predecessors, (137), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 05:14:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 248 transitions. [2022-12-14 05:14:10,547 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 248 transitions. Word has length 66 [2022-12-14 05:14:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:14:10,547 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 248 transitions. [2022-12-14 05:14:10,547 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 05:14:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 248 transitions. [2022-12-14 05:14:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 05:14:10,549 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:14:10,550 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 05:14:10,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:14:10,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:14:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:14:10,551 INFO L85 PathProgramCache]: Analyzing trace with hash -63004811, now seen corresponding path program 1 times [2022-12-14 05:14:10,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:14:10,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074291487] [2022-12-14 05:14:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:14:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:14:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:14:10,649 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 05:14:10,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:14:10,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074291487] [2022-12-14 05:14:10,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074291487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:14:10,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:14:10,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:14:10,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590118351] [2022-12-14 05:14:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:14:10,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:14:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:14:10,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:14:10,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:14:10,651 INFO L87 Difference]: Start difference. First operand 186 states and 248 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 05:14:10,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:14:10,759 INFO L93 Difference]: Finished difference Result 407 states and 563 transitions. [2022-12-14 05:14:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:14:10,759 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 05:14:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:14:10,761 INFO L225 Difference]: With dead ends: 407 [2022-12-14 05:14:10,761 INFO L226 Difference]: Without dead ends: 239 [2022-12-14 05:14:10,763 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 05:14:10,764 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 59 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:14:10,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 434 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:14:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-14 05:14:10,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 234. [2022-12-14 05:14:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 141 states have (on average 1.3617021276595744) internal successors, (192), 143 states have internal predecessors, (192), 70 states have call successors, (70), 22 states have call predecessors, (70), 22 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-12-14 05:14:10,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 331 transitions. [2022-12-14 05:14:10,784 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 331 transitions. Word has length 71 [2022-12-14 05:14:10,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:14:10,785 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 331 transitions. [2022-12-14 05:14:10,785 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 05:14:10,785 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 331 transitions. [2022-12-14 05:14:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 05:14:10,788 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:14:10,788 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 05:14:10,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:14:10,788 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:14:10,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:14:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1581609214, now seen corresponding path program 1 times [2022-12-14 05:14:10,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:14:10,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757615703] [2022-12-14 05:14:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:14:10,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:14:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:14:10,962 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 05:14:10,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:14:10,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757615703] [2022-12-14 05:14:10,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757615703] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:14:10,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555778343] [2022-12-14 05:14:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:14:10,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:14:10,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:14:10,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:14:10,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:14:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:14:11,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:14:11,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:14:11,219 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 05:14:11,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:14:11,275 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 05:14:11,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555778343] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:14:11,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [923627626] [2022-12-14 05:14:11,292 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-12-14 05:14:11,292 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:14:11,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:14:11,299 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:14:11,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:14:35,419 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 05:14:35,716 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:14:36,012 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-12-14 05:14:37,631 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 05:14:37,668 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2022-12-14 05:14:40,331 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 247 for LOIs [2022-12-14 05:14:40,375 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 262 for LOIs [2022-12-14 05:14:44,621 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 453 for LOIs [2022-12-14 05:14:45,199 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-12-14 05:14:49,887 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 244 for LOIs [2022-12-14 05:14:49,928 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:16:33,818 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3223#(and (<= 0 (+ |outgoing__wrappee__Keys_getClientId_~retValue_acc~42#1| 2147483648)) (<= 1 |outgoing__wrappee__Keys_~client#1|) (<= |outgoing__wrappee__Keys_mail_~msg#1| 1) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (not (= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~6#1| 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) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (<= |outgoing__wrappee__Keys_mail_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= ~__ste_Client_Keyring0_User0~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey2~0) (<= 0 ~__ste_ClientAddressBook_size0~0) (<= 2 ~rjh~0) (<= 0 ~__SELECTED_FEATURE_Encrypt~0) (<= 0 ~__ste_client_autoResponse1~0) (<= 0 ~__ste_client_outbuffer0~0) (<= |old(~queued_client~0)| 0) (<= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 1 |outgoing__wrappee__Keys_~msg#1|) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~6#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= ~chuck~0 3) (<= 0 ~__ste_client_outbuffer1~0) (<= 0 ~__ste_ClientAddressBook_size1~0) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (<= 0 (+ |outgoing__wrappee__Keys_~tmp~7#1| 2147483648)) (<= ~__ste_client_name0~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Alias1~0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (<= 0 ~__ste_Client_Keyring0_User0~0) (<= 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_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) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~client#1| 1) (<= ~__ste_Email_counter~0 0) (<= 0 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~6#1|) (<= ~__ste_Client_Keyring2_User2~0 0) (<= ~__ste_email_body1~0.offset 0) (<= ~__ste_client_privateKey2~0 789) (<= 0 ~__SELECTED_FEATURE_Decrypt~0) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~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) (<= |outgoing__wrappee__Keys_mail_~__utac__ad__arg1~0#1| 1) (<= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= ~__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) (<= 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) (<= |outgoing__wrappee__Keys_getClientId_~retValue_acc~42#1| 2147483647) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= ~__ste_ClientAddressBook_size0~0 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|) (<= 0 ~__ste_client_name0~0.base) (<= 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) (<= ~__SELECTED_FEATURE_Encrypt~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 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= 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) (<= 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) (<= 0 |old(~queued_client~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) (<= |old(~queue_empty~0)| 1) (<= 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) (<= ~__ste_Client_AddressBook0_Address2~0 0) (<= ~__ste_client_autoResponse1~0 0) (<= 1 |outgoing__wrappee__Keys_mail_~__utac__ad__arg2~0#1|) (= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp~17#1| 0) (<= ~__ste_client_outbuffer0~0 0) (<= ~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) (= ~__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) (<= |outgoing__wrappee__Keys_#in~msg#1| 1) (<= 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) (<= ~rjh~0 2) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~msg#1| 1) (<= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__Keys_mail_#in~msg#1|) (<= 0 ~__ste_Client_Keyring2_PublicKey2~0) (<= 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) (= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp~17#1| ~__ste_client_privateKey0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 0) (<= 3 ~chuck~0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_encryptionKey1~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (<= ~__ste_client_outbuffer1~0 0) (= ~__ste_ClientKeyring_size2~0 0) (<= ~__ste_ClientAddressBook_size1~0 0) (<= 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 05:16:33,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:16:33,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:16:33,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 05:16:33,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767273158] [2022-12-14 05:16:33,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:16:33,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:16:33,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:33,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:16:33,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3134, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 05:16:33,821 INFO L87 Difference]: Start difference. First operand 234 states and 331 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 05:16:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:34,059 INFO L93 Difference]: Finished difference Result 601 states and 912 transitions. [2022-12-14 05:16:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:16:34,059 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 05:16:34,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:34,063 INFO L225 Difference]: With dead ends: 601 [2022-12-14 05:16:34,063 INFO L226 Difference]: Without dead ends: 509 [2022-12-14 05:16:34,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 103.8s TimeCoverageRelationStatistics Valid=172, Invalid=3134, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 05:16:34,066 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 222 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:34,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1048 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:16:34,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-12-14 05:16:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 494. [2022-12-14 05:16:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 322 states have (on average 1.484472049689441) internal successors, (478), 324 states have internal predecessors, (478), 149 states have call successors, (149), 22 states have call predecessors, (149), 22 states have return successors, (148), 147 states have call predecessors, (148), 148 states have call successors, (148) [2022-12-14 05:16:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 775 transitions. [2022-12-14 05:16:34,111 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 775 transitions. Word has length 72 [2022-12-14 05:16:34,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:34,111 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 775 transitions. [2022-12-14 05:16:34,112 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 05:16:34,112 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 775 transitions. [2022-12-14 05:16:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 05:16:34,116 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:34,117 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 05:16:34,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:16:34,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:34,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash -378690747, now seen corresponding path program 1 times [2022-12-14 05:16:34,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:34,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426953940] [2022-12-14 05:16:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:34,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:34,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:34,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426953940] [2022-12-14 05:16:34,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426953940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:34,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:34,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:16:34,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910689220] [2022-12-14 05:16:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:34,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:34,480 INFO L87 Difference]: Start difference. First operand 494 states and 775 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 05:16:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:34,594 INFO L93 Difference]: Finished difference Result 1218 states and 1948 transitions. [2022-12-14 05:16:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:34,595 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 05:16:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:34,598 INFO L225 Difference]: With dead ends: 1218 [2022-12-14 05:16:34,598 INFO L226 Difference]: Without dead ends: 756 [2022-12-14 05:16:34,599 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 05:16:34,599 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 57 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:34,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 440 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:34,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-12-14 05:16:34,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 751. [2022-12-14 05:16:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 500 states have (on average 1.502) internal successors, (751), 502 states have internal predecessors, (751), 228 states have call successors, (228), 22 states have call predecessors, (228), 22 states have return successors, (227), 226 states have call predecessors, (227), 227 states have call successors, (227) [2022-12-14 05:16:34,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1206 transitions. [2022-12-14 05:16:34,629 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1206 transitions. Word has length 78 [2022-12-14 05:16:34,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:34,630 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 1206 transitions. [2022-12-14 05:16:34,630 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 05:16:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1206 transitions. [2022-12-14 05:16:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 05:16:34,635 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:34,635 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 05:16:34,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:16:34,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:34,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:34,635 INFO L85 PathProgramCache]: Analyzing trace with hash -669280587, now seen corresponding path program 1 times [2022-12-14 05:16:34,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:34,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681414733] [2022-12-14 05:16:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:34,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:34,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:34,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681414733] [2022-12-14 05:16:34,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681414733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:34,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:34,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:16:34,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359554933] [2022-12-14 05:16:34,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:34,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:34,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:34,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:34,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:34,689 INFO L87 Difference]: Start difference. First operand 751 states and 1206 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 05:16:34,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:34,812 INFO L93 Difference]: Finished difference Result 1840 states and 2995 transitions. [2022-12-14 05:16:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:34,812 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 05:16:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:34,817 INFO L225 Difference]: With dead ends: 1840 [2022-12-14 05:16:34,817 INFO L226 Difference]: Without dead ends: 1151 [2022-12-14 05:16:34,819 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 05:16:34,820 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 55 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:34,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 428 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:34,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-12-14 05:16:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1146. [2022-12-14 05:16:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 776 states have (on average 1.509020618556701) internal successors, (1171), 778 states have internal predecessors, (1171), 347 states have call successors, (347), 22 states have call predecessors, (347), 22 states have return successors, (346), 345 states have call predecessors, (346), 346 states have call successors, (346) [2022-12-14 05:16:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1864 transitions. [2022-12-14 05:16:34,863 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1864 transitions. Word has length 79 [2022-12-14 05:16:34,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:34,863 INFO L495 AbstractCegarLoop]: Abstraction has 1146 states and 1864 transitions. [2022-12-14 05:16:34,863 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 05:16:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1864 transitions. [2022-12-14 05:16:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 05:16:34,866 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:34,866 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 05:16:34,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 05:16:34,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -275457117, now seen corresponding path program 1 times [2022-12-14 05:16:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:34,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145646245] [2022-12-14 05:16:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:34,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:34,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:34,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145646245] [2022-12-14 05:16:34,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145646245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:34,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:34,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:16:34,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384984762] [2022-12-14 05:16:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:34,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:34,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:34,923 INFO L87 Difference]: Start difference. First operand 1146 states and 1864 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 05:16:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:35,078 INFO L93 Difference]: Finished difference Result 2743 states and 4507 transitions. [2022-12-14 05:16:35,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:35,079 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 05:16:35,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:35,088 INFO L225 Difference]: With dead ends: 2743 [2022-12-14 05:16:35,088 INFO L226 Difference]: Without dead ends: 1739 [2022-12-14 05:16:35,091 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 05:16:35,092 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 53 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:35,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 423 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2022-12-14 05:16:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1734. [2022-12-14 05:16:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1202 states have (on average 1.5133111480865225) internal successors, (1819), 1204 states have internal predecessors, (1819), 509 states have call successors, (509), 22 states have call predecessors, (509), 22 states have return successors, (508), 507 states have call predecessors, (508), 508 states have call successors, (508) [2022-12-14 05:16:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2836 transitions. [2022-12-14 05:16:35,165 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2836 transitions. Word has length 80 [2022-12-14 05:16:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:35,166 INFO L495 AbstractCegarLoop]: Abstraction has 1734 states and 2836 transitions. [2022-12-14 05:16:35,166 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 05:16:35,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2836 transitions. [2022-12-14 05:16:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:16:35,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:35,170 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 05:16:35,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 05:16:35,170 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1290374132, now seen corresponding path program 1 times [2022-12-14 05:16:35,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:35,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37658107] [2022-12-14 05:16:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:35,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:35,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:35,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37658107] [2022-12-14 05:16:35,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37658107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:35,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:35,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:16:35,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851459032] [2022-12-14 05:16:35,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:35,220 INFO L87 Difference]: Start difference. First operand 1734 states and 2836 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 05:16:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:35,406 INFO L93 Difference]: Finished difference Result 4128 states and 6815 transitions. [2022-12-14 05:16:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:35,407 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 05:16:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:35,420 INFO L225 Difference]: With dead ends: 4128 [2022-12-14 05:16:35,420 INFO L226 Difference]: Without dead ends: 2673 [2022-12-14 05:16:35,425 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 05:16:35,426 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 51 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:35,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 423 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2022-12-14 05:16:35,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2668. [2022-12-14 05:16:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 1891 states have (on average 1.5150713907985194) internal successors, (2865), 1893 states have internal predecessors, (2865), 754 states have call successors, (754), 22 states have call predecessors, (754), 22 states have return successors, (753), 752 states have call predecessors, (753), 753 states have call successors, (753) [2022-12-14 05:16:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4372 transitions. [2022-12-14 05:16:35,545 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4372 transitions. Word has length 81 [2022-12-14 05:16:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:35,546 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 4372 transitions. [2022-12-14 05:16:35,546 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 05:16:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4372 transitions. [2022-12-14 05:16:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 05:16:35,551 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:35,551 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 05:16:35,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 05:16:35,551 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:35,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1228641575, now seen corresponding path program 1 times [2022-12-14 05:16:35,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:35,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148776027] [2022-12-14 05:16:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:35,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:35,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:35,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148776027] [2022-12-14 05:16:35,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148776027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:35,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:35,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:16:35,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782226136] [2022-12-14 05:16:35,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:35,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:35,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:35,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:35,603 INFO L87 Difference]: Start difference. First operand 2668 states and 4372 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 05:16:35,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:35,844 INFO L93 Difference]: Finished difference Result 6644 states and 10975 transitions. [2022-12-14 05:16:35,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:35,845 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 05:16:35,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:35,860 INFO L225 Difference]: With dead ends: 6644 [2022-12-14 05:16:35,860 INFO L226 Difference]: Without dead ends: 4398 [2022-12-14 05:16:35,867 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 05:16:35,867 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 49 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:35,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 443 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-12-14 05:16:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 4393. [2022-12-14 05:16:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4393 states, 3123 states have (on average 1.5043227665706052) internal successors, (4698), 3125 states have internal predecessors, (4698), 1247 states have call successors, (1247), 22 states have call predecessors, (1247), 22 states have return successors, (1246), 1245 states have call predecessors, (1246), 1246 states have call successors, (1246) [2022-12-14 05:16:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 7191 transitions. [2022-12-14 05:16:36,134 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 7191 transitions. Word has length 82 [2022-12-14 05:16:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:36,134 INFO L495 AbstractCegarLoop]: Abstraction has 4393 states and 7191 transitions. [2022-12-14 05:16:36,134 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 05:16:36,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 7191 transitions. [2022-12-14 05:16:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 05:16:36,142 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:36,142 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 05:16:36,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 05:16:36,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:36,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:36,142 INFO L85 PathProgramCache]: Analyzing trace with hash -313227664, now seen corresponding path program 1 times [2022-12-14 05:16:36,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:36,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617281693] [2022-12-14 05:16:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:36,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:36,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:36,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617281693] [2022-12-14 05:16:36,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617281693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:36,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:36,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:16:36,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090730449] [2022-12-14 05:16:36,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:36,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:36,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:36,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:36,225 INFO L87 Difference]: Start difference. First operand 4393 states and 7191 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 05:16:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:36,561 INFO L93 Difference]: Finished difference Result 11060 states and 18260 transitions. [2022-12-14 05:16:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:36,561 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 05:16:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:36,587 INFO L225 Difference]: With dead ends: 11060 [2022-12-14 05:16:36,588 INFO L226 Difference]: Without dead ends: 7355 [2022-12-14 05:16:36,596 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 05:16:36,597 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 47 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:36,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 429 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:36,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2022-12-14 05:16:36,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7350. [2022-12-14 05:16:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7350 states, 5258 states have (on average 1.49923925446938) internal successors, (7883), 5260 states have internal predecessors, (7883), 2069 states have call successors, (2069), 22 states have call predecessors, (2069), 22 states have return successors, (2068), 2067 states have call predecessors, (2068), 2068 states have call successors, (2068) [2022-12-14 05:16:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7350 states to 7350 states and 12020 transitions. [2022-12-14 05:16:37,031 INFO L78 Accepts]: Start accepts. Automaton has 7350 states and 12020 transitions. Word has length 83 [2022-12-14 05:16:37,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:37,031 INFO L495 AbstractCegarLoop]: Abstraction has 7350 states and 12020 transitions. [2022-12-14 05:16:37,031 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 05:16:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7350 states and 12020 transitions. [2022-12-14 05:16:37,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 05:16:37,049 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:37,049 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 05:16:37,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 05:16:37,049 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:37,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:37,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1520540089, now seen corresponding path program 1 times [2022-12-14 05:16:37,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:37,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792020621] [2022-12-14 05:16:37,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:37,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:37,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:37,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792020621] [2022-12-14 05:16:37,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792020621] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:37,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:37,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:16:37,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765538582] [2022-12-14 05:16:37,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:37,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:37,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:37,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:37,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:37,097 INFO L87 Difference]: Start difference. First operand 7350 states and 12020 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 05:16:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:37,630 INFO L93 Difference]: Finished difference Result 18527 states and 30522 transitions. [2022-12-14 05:16:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:37,630 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 05:16:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:37,678 INFO L225 Difference]: With dead ends: 18527 [2022-12-14 05:16:37,678 INFO L226 Difference]: Without dead ends: 12299 [2022-12-14 05:16:37,692 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 05:16:37,692 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 45 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:37,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 424 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12299 states. [2022-12-14 05:16:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12299 to 12294. [2022-12-14 05:16:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12294 states, 8999 states have (on average 1.500611179019891) internal successors, (13504), 9001 states have internal predecessors, (13504), 3272 states have call successors, (3272), 22 states have call predecessors, (3272), 22 states have return successors, (3271), 3270 states have call predecessors, (3271), 3271 states have call successors, (3271) [2022-12-14 05:16:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12294 states to 12294 states and 20047 transitions. [2022-12-14 05:16:38,407 INFO L78 Accepts]: Start accepts. Automaton has 12294 states and 20047 transitions. Word has length 84 [2022-12-14 05:16:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:38,407 INFO L495 AbstractCegarLoop]: Abstraction has 12294 states and 20047 transitions. [2022-12-14 05:16:38,407 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 05:16:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 12294 states and 20047 transitions. [2022-12-14 05:16:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 05:16:38,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:38,417 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 05:16:38,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 05:16:38,417 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash 632938127, now seen corresponding path program 1 times [2022-12-14 05:16:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:38,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010470598] [2022-12-14 05:16:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:38,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:38,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010470598] [2022-12-14 05:16:38,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010470598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:38,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:38,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:16:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816135287] [2022-12-14 05:16:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:38,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:38,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:38,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:38,487 INFO L87 Difference]: Start difference. First operand 12294 states and 20047 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 05:16:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:39,306 INFO L93 Difference]: Finished difference Result 32531 states and 53384 transitions. [2022-12-14 05:16:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:39,306 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 05:16:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:39,363 INFO L225 Difference]: With dead ends: 32531 [2022-12-14 05:16:39,364 INFO L226 Difference]: Without dead ends: 21811 [2022-12-14 05:16:39,384 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 05:16:39,385 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 43 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:39,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 428 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:39,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21811 states. [2022-12-14 05:16:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21811 to 21806. [2022-12-14 05:16:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21806 states, 16061 states have (on average 1.4928709295809726) internal successors, (23977), 16063 states have internal predecessors, (23977), 5722 states have call successors, (5722), 22 states have call predecessors, (5722), 22 states have return successors, (5721), 5720 states have call predecessors, (5721), 5721 states have call successors, (5721) [2022-12-14 05:16:40,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21806 states to 21806 states and 35420 transitions. [2022-12-14 05:16:40,599 INFO L78 Accepts]: Start accepts. Automaton has 21806 states and 35420 transitions. Word has length 85 [2022-12-14 05:16:40,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:40,599 INFO L495 AbstractCegarLoop]: Abstraction has 21806 states and 35420 transitions. [2022-12-14 05:16:40,599 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 05:16:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand 21806 states and 35420 transitions. [2022-12-14 05:16:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 05:16:40,609 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:40,609 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 05:16:40,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 05:16:40,610 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:40,610 INFO L85 PathProgramCache]: Analyzing trace with hash -268385377, now seen corresponding path program 1 times [2022-12-14 05:16:40,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:40,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783486352] [2022-12-14 05:16:40,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:40,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:40,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:40,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783486352] [2022-12-14 05:16:40,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783486352] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:40,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:40,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:16:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25689378] [2022-12-14 05:16:40,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:40,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:40,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:40,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:40,657 INFO L87 Difference]: Start difference. First operand 21806 states and 35420 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 05:16:42,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:42,475 INFO L93 Difference]: Finished difference Result 59218 states and 96636 transitions. [2022-12-14 05:16:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:42,476 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 05:16:42,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:42,613 INFO L225 Difference]: With dead ends: 59218 [2022-12-14 05:16:42,614 INFO L226 Difference]: Without dead ends: 39581 [2022-12-14 05:16:42,661 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 05:16:42,661 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 41 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:42,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 428 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39581 states. [2022-12-14 05:16:44,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39581 to 39576. [2022-12-14 05:16:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39576 states, 29318 states have (on average 1.4821270209427655) internal successors, (43453), 29320 states have internal predecessors, (43453), 10235 states have call successors, (10235), 22 states have call predecessors, (10235), 22 states have return successors, (10234), 10233 states have call predecessors, (10234), 10234 states have call successors, (10234) [2022-12-14 05:16:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39576 states to 39576 states and 63922 transitions. [2022-12-14 05:16:44,524 INFO L78 Accepts]: Start accepts. Automaton has 39576 states and 63922 transitions. Word has length 86 [2022-12-14 05:16:44,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:44,524 INFO L495 AbstractCegarLoop]: Abstraction has 39576 states and 63922 transitions. [2022-12-14 05:16:44,524 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 05:16:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 39576 states and 63922 transitions. [2022-12-14 05:16:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 05:16:44,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:44,535 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 05:16:44,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 05:16:44,535 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:44,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1953370577, now seen corresponding path program 1 times [2022-12-14 05:16:44,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:44,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964997712] [2022-12-14 05:16:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:44,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:44,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:44,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964997712] [2022-12-14 05:16:44,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964997712] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:44,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:44,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:16:44,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518351406] [2022-12-14 05:16:44,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:44,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:16:44,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:44,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:16:44,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:16:44,582 INFO L87 Difference]: Start difference. First operand 39576 states and 63922 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 05:16:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:48,060 INFO L93 Difference]: Finished difference Result 73116 states and 118271 transitions. [2022-12-14 05:16:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:16:48,061 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 05:16:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:48,264 INFO L225 Difference]: With dead ends: 73116 [2022-12-14 05:16:48,264 INFO L226 Difference]: Without dead ends: 73024 [2022-12-14 05:16:48,283 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 05:16:48,284 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 39 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:48,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 428 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:16:48,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73024 states. [2022-12-14 05:16:51,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73024 to 73019. [2022-12-14 05:16:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73019 states, 54393 states have (on average 1.4681117055503465) internal successors, (79855), 54395 states have internal predecessors, (79855), 18603 states have call successors, (18603), 22 states have call predecessors, (18603), 22 states have return successors, (18602), 18601 states have call predecessors, (18602), 18602 states have call successors, (18602) [2022-12-14 05:16:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73019 states to 73019 states and 117060 transitions. [2022-12-14 05:16:51,566 INFO L78 Accepts]: Start accepts. Automaton has 73019 states and 117060 transitions. Word has length 87 [2022-12-14 05:16:51,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:16:51,567 INFO L495 AbstractCegarLoop]: Abstraction has 73019 states and 117060 transitions. [2022-12-14 05:16:51,567 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 05:16:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 73019 states and 117060 transitions. [2022-12-14 05:16:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 05:16:51,578 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:16:51,578 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 05:16:51,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 05:16:51,579 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:16:51,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:16:51,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1943445248, now seen corresponding path program 1 times [2022-12-14 05:16:51,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:16:51,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026589118] [2022-12-14 05:16:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:16:51,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:16:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:16:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 05:16:52,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:16:52,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026589118] [2022-12-14 05:16:52,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026589118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:16:52,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:16:52,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 05:16:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297396966] [2022-12-14 05:16:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:16:52,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 05:16:52,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:16:52,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 05:16:52,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:16:52,395 INFO L87 Difference]: Start difference. First operand 73019 states and 117060 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 05:16:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:16:57,285 INFO L93 Difference]: Finished difference Result 73145 states and 117245 transitions. [2022-12-14 05:16:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 05:16:57,285 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 05:16:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:16:57,514 INFO L225 Difference]: With dead ends: 73145 [2022-12-14 05:16:57,514 INFO L226 Difference]: Without dead ends: 73141 [2022-12-14 05:16:57,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 05:16:57,540 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 363 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:16:57,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2711 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 05:16:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73141 states. [2022-12-14 05:17:01,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73141 to 73081. [2022-12-14 05:17:01,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73081 states, 54427 states have (on average 1.4679295202748637) internal successors, (79895), 54430 states have internal predecessors, (79895), 18627 states have call successors, (18627), 27 states have call predecessors, (18627), 26 states have return successors, (18624), 18623 states have call predecessors, (18624), 18624 states have call successors, (18624) [2022-12-14 05:17:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73081 states to 73081 states and 117146 transitions. [2022-12-14 05:17:01,718 INFO L78 Accepts]: Start accepts. Automaton has 73081 states and 117146 transitions. Word has length 88 [2022-12-14 05:17:01,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:17:01,718 INFO L495 AbstractCegarLoop]: Abstraction has 73081 states and 117146 transitions. [2022-12-14 05:17:01,718 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 05:17:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 73081 states and 117146 transitions. [2022-12-14 05:17:01,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-14 05:17:01,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:17:01,787 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, 1, 1] [2022-12-14 05:17:01,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 05:17:01,787 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:17:01,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:17:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash 676155388, now seen corresponding path program 1 times [2022-12-14 05:17:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:17:01,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963273857] [2022-12-14 05:17:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:17:01,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:17:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:17:01,984 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 05:17:01,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:17:01,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963273857] [2022-12-14 05:17:01,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963273857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:17:01,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:17:01,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:17:01,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729064016] [2022-12-14 05:17:01,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:17:01,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:17:01,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:17:01,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:17:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:17:01,985 INFO L87 Difference]: Start difference. First operand 73081 states and 117146 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 05:17:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:17:05,914 INFO L93 Difference]: Finished difference Result 73209 states and 117316 transitions. [2022-12-14 05:17:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:17:05,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 130 [2022-12-14 05:17:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:17:06,113 INFO L225 Difference]: With dead ends: 73209 [2022-12-14 05:17:06,113 INFO L226 Difference]: Without dead ends: 73081 [2022-12-14 05:17:06,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:17:06,141 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 88 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:17:06,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 915 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:17:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73081 states. [2022-12-14 05:17:10,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73081 to 73081. [2022-12-14 05:17:10,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73081 states, 54427 states have (on average 1.4678927738071177) internal successors, (79893), 54430 states have internal predecessors, (79893), 18627 states have call successors, (18627), 27 states have call predecessors, (18627), 26 states have return successors, (18624), 18623 states have call predecessors, (18624), 18624 states have call successors, (18624) [2022-12-14 05:17:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73081 states to 73081 states and 117144 transitions. [2022-12-14 05:17:10,558 INFO L78 Accepts]: Start accepts. Automaton has 73081 states and 117144 transitions. Word has length 130 [2022-12-14 05:17:10,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:17:10,559 INFO L495 AbstractCegarLoop]: Abstraction has 73081 states and 117144 transitions. [2022-12-14 05:17:10,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 05:17:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 73081 states and 117144 transitions. [2022-12-14 05:17:10,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 05:17:10,634 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:17:10,634 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, 1, 1] [2022-12-14 05:17:10,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 05:17:10,634 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:17:10,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:17:10,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1474754198, now seen corresponding path program 1 times [2022-12-14 05:17:10,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:17:10,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418796006] [2022-12-14 05:17:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:17:10,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:17:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:17:10,923 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 05:17:10,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:17:10,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418796006] [2022-12-14 05:17:10,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418796006] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:17:10,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:17:10,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:17:10,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257772652] [2022-12-14 05:17:10,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:17:10,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:17:10,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:17:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:17:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:17:10,925 INFO L87 Difference]: Start difference. First operand 73081 states and 117144 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-12-14 05:17:15,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:17:15,391 INFO L93 Difference]: Finished difference Result 73237 states and 117331 transitions. [2022-12-14 05:17:15,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:17:15,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 135 [2022-12-14 05:17:15,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:17:15,584 INFO L225 Difference]: With dead ends: 73237 [2022-12-14 05:17:15,584 INFO L226 Difference]: Without dead ends: 73152 [2022-12-14 05:17:15,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:17:15,611 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 190 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:17:15,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 397 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:17:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73152 states. [2022-12-14 05:17:20,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73152 to 73145. [2022-12-14 05:17:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73145 states, 54462 states have (on average 1.4676655282582352) internal successors, (79932), 54467 states have internal predecessors, (79932), 18644 states have call successors, (18644), 38 states have call predecessors, (18644), 38 states have return successors, (18643), 18639 states have call predecessors, (18643), 18641 states have call successors, (18643) [2022-12-14 05:17:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73145 states to 73145 states and 117219 transitions. [2022-12-14 05:17:20,422 INFO L78 Accepts]: Start accepts. Automaton has 73145 states and 117219 transitions. Word has length 135 [2022-12-14 05:17:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:17:20,422 INFO L495 AbstractCegarLoop]: Abstraction has 73145 states and 117219 transitions. [2022-12-14 05:17:20,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-12-14 05:17:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 73145 states and 117219 transitions. [2022-12-14 05:17:20,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-14 05:17:20,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:17:20,537 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:17:20,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 05:17:20,537 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:17:20,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:17:20,537 INFO L85 PathProgramCache]: Analyzing trace with hash 797357622, now seen corresponding path program 1 times [2022-12-14 05:17:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:17:20,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892140735] [2022-12-14 05:17:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:17:20,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:17:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:17:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 05:17:21,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:17:21,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892140735] [2022-12-14 05:17:21,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892140735] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:17:21,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563488315] [2022-12-14 05:17:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:17:21,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:17:21,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:17:21,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:17:21,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:17:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:17:21,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 05:17:21,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:17:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:17:22,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:17:22,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563488315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:17:22,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:17:22,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [21] total 23 [2022-12-14 05:17:22,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254039934] [2022-12-14 05:17:22,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:17:22,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:17:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:17:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:17:22,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-12-14 05:17:22,101 INFO L87 Difference]: Start difference. First operand 73145 states and 117219 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-14 05:17:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:17:28,661 INFO L93 Difference]: Finished difference Result 108105 states and 173087 transitions. [2022-12-14 05:17:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:17:28,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 159 [2022-12-14 05:17:28,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:17:28,992 INFO L225 Difference]: With dead ends: 108105 [2022-12-14 05:17:28,992 INFO L226 Difference]: Without dead ends: 107875 [2022-12-14 05:17:29,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-12-14 05:17:29,029 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 122 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:17:29,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 526 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:17:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107875 states. [2022-12-14 05:17:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107875 to 105122. [2022-12-14 05:17:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105122 states, 78538 states have (on average 1.4497695383126639) internal successors, (113862), 78543 states have internal predecessors, (113862), 26537 states have call successors, (26537), 46 states have call predecessors, (26537), 46 states have return successors, (26536), 26532 states have call predecessors, (26536), 26534 states have call successors, (26536) [2022-12-14 05:17:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105122 states to 105122 states and 166935 transitions. [2022-12-14 05:17:36,934 INFO L78 Accepts]: Start accepts. Automaton has 105122 states and 166935 transitions. Word has length 159 [2022-12-14 05:17:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:17:36,934 INFO L495 AbstractCegarLoop]: Abstraction has 105122 states and 166935 transitions. [2022-12-14 05:17:36,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-14 05:17:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 105122 states and 166935 transitions. [2022-12-14 05:17:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-12-14 05:17:37,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:17:37,131 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:17:37,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:17:37,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 05:17:37,333 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:17:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:17:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash -499694970, now seen corresponding path program 1 times [2022-12-14 05:17:37,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:17:37,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4505829] [2022-12-14 05:17:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:17:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:17:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:17:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-14 05:17:37,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:17:37,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4505829] [2022-12-14 05:17:37,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4505829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:17:37,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:17:37,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:17:37,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241919873] [2022-12-14 05:17:37,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:17:37,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:17:37,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:17:37,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:17:37,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:17:37,500 INFO L87 Difference]: Start difference. First operand 105122 states and 166935 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-14 05:17:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:17:44,979 INFO L93 Difference]: Finished difference Result 207972 states and 330531 transitions. [2022-12-14 05:17:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:17:44,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 168 [2022-12-14 05:17:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:17:45,271 INFO L225 Difference]: With dead ends: 207972 [2022-12-14 05:17:45,271 INFO L226 Difference]: Without dead ends: 105127 [2022-12-14 05:17:45,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:17:45,395 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 130 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:17:45,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 645 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:17:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105127 states. [2022-12-14 05:17:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105127 to 105122. [2022-12-14 05:17:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105122 states, 78538 states have (on average 1.4302630573735007) internal successors, (112330), 78543 states have internal predecessors, (112330), 26537 states have call successors, (26537), 46 states have call predecessors, (26537), 46 states have return successors, (26536), 26532 states have call predecessors, (26536), 26534 states have call successors, (26536) [2022-12-14 05:17:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105122 states to 105122 states and 165403 transitions. [2022-12-14 05:17:53,640 INFO L78 Accepts]: Start accepts. Automaton has 105122 states and 165403 transitions. Word has length 168 [2022-12-14 05:17:53,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:17:53,640 INFO L495 AbstractCegarLoop]: Abstraction has 105122 states and 165403 transitions. [2022-12-14 05:17:53,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-14 05:17:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 105122 states and 165403 transitions. [2022-12-14 05:17:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-12-14 05:17:53,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:17:53,854 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:17:53,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 05:17:53,854 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:17:53,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:17:53,855 INFO L85 PathProgramCache]: Analyzing trace with hash 986947339, now seen corresponding path program 1 times [2022-12-14 05:17:53,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:17:53,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769104764] [2022-12-14 05:17:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:17:53,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:17:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:17:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-14 05:17:56,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:17:56,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769104764] [2022-12-14 05:17:56,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769104764] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:17:56,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511787031] [2022-12-14 05:17:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:17:56,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:17:56,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:17:56,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:17:56,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:17:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:17:56,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 220 conjunts are in the unsatisfiable core [2022-12-14 05:17:56,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:17:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 05:17:59,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:18:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-14 05:18:04,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511787031] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:18:04,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [530211759] [2022-12-14 05:18:04,559 INFO L159 IcfgInterpreter]: Started Sifa with 117 locations of interest [2022-12-14 05:18:04,559 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:18:04,560 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:18:04,560 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:18:04,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:18:33,083 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 05:18:33,376 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 258 for LOIs [2022-12-14 05:18:35,694 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:18:35,979 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 513 for LOIs [2022-12-14 05:18:45,264 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 217 for LOIs [2022-12-14 05:18:45,298 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 245 for LOIs [2022-12-14 05:19:32,043 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 218 for LOIs [2022-12-14 05:19:32,067 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 401 for LOIs [2022-12-14 05:19:32,290 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 405 for LOIs [2022-12-14 05:19:32,766 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 219 for LOIs [2022-12-14 05:19:32,797 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 222 for LOIs [2022-12-14 05:19:32,832 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 446 for LOIs [2022-12-14 05:19:33,284 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 218 for LOIs [2022-12-14 05:19:33,315 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailSignKey with input of size 219 for LOIs [2022-12-14 05:19:33,346 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:20:22,154 WARN L233 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 595 DAG size of output: 399 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:11,116 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 527 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:55,901 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 677 DAG size of output: 488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:23:31,056 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2300310#(and (<= 0 (+ |outgoing__wrappee__Keys_getClientId_~retValue_acc~42#1| 2147483648)) (<= |outgoing__wrappee__Keys_~msg#1| 2147483647) (= ~__ste_Client_Keyring1_User2~0 0) (<= 1 |outgoing__wrappee__Keys_~client#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= ~queued_message~0 2147483647) (<= 0 (+ |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~msg#1| 2147483648)) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~msg#1| 2147483647) (= ~__ste_email_isEncrypted1~0 0) (= ~__ste_email_subject0~0.offset 0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= 0 (+ |outgoing__wrappee__Keys_~msg#1| 2147483648)) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= ~queued_client~0 3) (<= 1 |outgoing__wrappee__Keys_mail_~__utac__ad__arg1~0#1|) (<= 0 (+ |outgoing__wrappee__Keys_mail_~msg#1| 2147483648)) (<= ~__ste_client_forwardReceiver0~0 0) (<= 0 (+ |outgoing__wrappee__Keys_mail_#in~msg#1| 2147483648)) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= ~__ste_client_idCounter2~0 3) (<= 0 (+ |outgoing__wrappee__Keys_~tmp~7#1| 2147483648)) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (= ~__ste_Client_Keyring0_User2~0 0) (<= |outgoing__wrappee__Keys_#in~client#1| 3) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= |outgoing__wrappee__Keys_getClientId_#res#1| 2147483647) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__Keys_getClientId_#in~handle#1| 3) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~queued_message~0 2147483648)) (= ~__ste_email_encryptionKey0~0 0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~client#1| 3) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (<= 0 |old(~queue_empty~0)|) (= ~__SELECTED_FEATURE_Forward~0 0) (= ~__ste_Client_Keyring0_User0~0 0) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (<= 0 ~queue_empty~0) (= ~__ste_Client_Keyring2_User1~0 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~client#1| 3) (<= |outgoing__wrappee__Keys_getClientId_~retValue_acc~42#1| 2147483647) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= 1 |outgoing__wrappee__Keys_getClientId_#in~handle#1|) (<= 1 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~client#1|) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 (+ |outgoing__wrappee__Keys_getClientId_#res#1| 2147483648)) (<= |old(~queued_client~0)| 3) (= ~bob~0 1) (<= 1 |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~client#1|) (<= |outgoing__wrappee__Keys_mail_~__utac__ad__arg1~0#1| 3) (= ~__ste_Client_AddressBook1_Alias2~0 0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= 0 (+ |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_#in~msg#1| 2147483648)) (= ~__SELECTED_FEATURE_Base~0 0) (<= 1 |outgoing__wrappee__Keys_getClientId_~handle#1|) (<= 0 (+ |old(~queued_message~0)| 2147483648)) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~msg#1| 2147483647) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= 0 ~__ste_client_forwardReceiver0~0) (<= 1 |outgoing__wrappee__Keys_mail_#in~client#1|) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 0 ~__ste_client_forwardReceiver2~0) (<= 0 (+ |outgoing__wrappee__Keys_mail_~__utac__ad__arg2~0#1| 2147483648)) (= ~__ste_client_name2~0.base 0) (<= 0 |old(~queued_client~0)|) (<= |outgoing__wrappee__Keys_getClientId_~handle#1| 3) (<= |outgoing__wrappee__Keys_mail_~msg#1| 2147483647) (<= |outgoing__wrappee__Keys_~client#1| 3) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (<= 0 (+ |outgoing__wrappee__Keys_#in~msg#1| 2147483648)) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing__wrappee__Keys_mail_~__utac__ad__arg2~0#1| 2147483647) (<= |outgoing__wrappee__Keys_mail_#in~client#1| 3) (<= 0 (+ |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~6#1| 2147483648)) (= ~__ste_Client_Keyring2_User2~0 0) (= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp~17#1| 0) (= ~head~0.base 0) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |old(~queued_message~0)| 2147483647) (<= |outgoing__wrappee__Keys_~tmp~7#1| 2147483647) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= |outgoing__wrappee__Keys_mail_~client#1| 3) (= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= 1 |outgoing__wrappee__Keys_mail_~client#1|) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= 0 ~__ste_client_forwardReceiver1~0) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= ~__ste_client_forwardReceiver2~0 0) (<= 0 |#StackHeapBarrier|) (= ~__ste_ClientAddressBook_size2~0 0) (<= |outgoing__wrappee__Keys_mail_#in~msg#1| 2147483647) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (= ~__ste_email_encryptionKey1~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (<= |outgoing__wrappee__Keys_#in~msg#1| 2147483647) (= ~__ste_ClientKeyring_size2~0 0) (= ~__ste_client_autoResponse2~0 0) (<= |outgoing__wrappee__Keys___utac_acc__SignForward_spec__1_~tmp___0~6#1| 2147483647) (<= 1 |outgoing__wrappee__Keys_#in~client#1|) (= |#NULL.base| 0))' at error location [2022-12-14 05:23:31,056 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:23:31,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:23:31,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 44, 35] total 103 [2022-12-14 05:23:31,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981488479] [2022-12-14 05:23:31,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:23:31,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-12-14 05:23:31,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:23:31,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-12-14 05:23:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1690, Invalid=38912, Unknown=0, NotChecked=0, Total=40602 [2022-12-14 05:23:31,066 INFO L87 Difference]: Start difference. First operand 105122 states and 165403 transitions. Second operand has 103 states, 72 states have (on average 2.9722222222222223) internal successors, (214), 81 states have internal predecessors, (214), 47 states have call successors, (88), 12 states have call predecessors, (88), 26 states have return successors, (83), 51 states have call predecessors, (83), 45 states have call successors, (83) [2022-12-14 05:24:05,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:24:05,115 INFO L93 Difference]: Finished difference Result 105607 states and 166015 transitions. [2022-12-14 05:24:05,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-12-14 05:24:05,115 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 72 states have (on average 2.9722222222222223) internal successors, (214), 81 states have internal predecessors, (214), 47 states have call successors, (88), 12 states have call predecessors, (88), 26 states have return successors, (83), 51 states have call predecessors, (83), 45 states have call successors, (83) Word has length 172 [2022-12-14 05:24:05,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:24:05,483 INFO L225 Difference]: With dead ends: 105607 [2022-12-14 05:24:05,483 INFO L226 Difference]: Without dead ends: 105183 [2022-12-14 05:24:05,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 355 SyntacticMatches, 9 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37294 ImplicationChecksByTransitivity, 257.8s TimeCoverageRelationStatistics Valid=5205, Invalid=103365, Unknown=0, NotChecked=0, Total=108570 [2022-12-14 05:24:05,519 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1840 mSDsluCounter, 8881 mSDsCounter, 0 mSdLazyCounter, 23358 mSolverCounterSat, 2116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 9197 SdHoareTripleChecker+Invalid, 25474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2116 IncrementalHoareTripleChecker+Valid, 23358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-12-14 05:24:05,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 9197 Invalid, 25474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2116 Valid, 23358 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-12-14 05:24:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105183 states. [2022-12-14 05:24:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105183 to 105172. [2022-12-14 05:24:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105172 states, 78569 states have (on average 1.4301442044572288) internal successors, (112365), 78575 states have internal predecessors, (112365), 26553 states have call successors, (26553), 48 states have call predecessors, (26553), 49 states have return successors, (26553), 26548 states have call predecessors, (26553), 26550 states have call successors, (26553) [2022-12-14 05:24:14,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105172 states to 105172 states and 165471 transitions. [2022-12-14 05:24:14,732 INFO L78 Accepts]: Start accepts. Automaton has 105172 states and 165471 transitions. Word has length 172 [2022-12-14 05:24:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:24:14,732 INFO L495 AbstractCegarLoop]: Abstraction has 105172 states and 165471 transitions. [2022-12-14 05:24:14,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 72 states have (on average 2.9722222222222223) internal successors, (214), 81 states have internal predecessors, (214), 47 states have call successors, (88), 12 states have call predecessors, (88), 26 states have return successors, (83), 51 states have call predecessors, (83), 45 states have call successors, (83) [2022-12-14 05:24:14,733 INFO L276 IsEmpty]: Start isEmpty. Operand 105172 states and 165471 transitions. [2022-12-14 05:24:15,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-12-14 05:24:15,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:24:15,071 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:24:15,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:24:15,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:24:15,272 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:24:15,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:24:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash -523126087, now seen corresponding path program 1 times [2022-12-14 05:24:15,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:24:15,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961351707] [2022-12-14 05:24:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:24:15,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:24:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:24:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 05:24:16,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:24:16,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961351707] [2022-12-14 05:24:16,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961351707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:24:16,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612027915] [2022-12-14 05:24:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:24:16,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:24:16,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:24:16,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:24:16,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:24:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:24:16,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-14 05:24:16,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:24:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 05:24:16,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:24:16,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612027915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:24:16,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:24:16,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [21] total 34 [2022-12-14 05:24:16,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497035156] [2022-12-14 05:24:16,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:24:16,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 05:24:16,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:24:16,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 05:24:16,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 05:24:16,868 INFO L87 Difference]: Start difference. First operand 105172 states and 165471 transitions. Second operand has 17 states, 13 states have (on average 7.384615384615385) internal successors, (96), 15 states have internal predecessors, (96), 10 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2022-12-14 05:24:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:24:25,904 INFO L93 Difference]: Finished difference Result 105544 states and 165943 transitions. [2022-12-14 05:24:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 05:24:25,904 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 7.384615384615385) internal successors, (96), 15 states have internal predecessors, (96), 10 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) Word has length 177 [2022-12-14 05:24:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:24:26,179 INFO L225 Difference]: With dead ends: 105544 [2022-12-14 05:24:26,179 INFO L226 Difference]: Without dead ends: 105276 [2022-12-14 05:24:26,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2209, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 05:24:26,202 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 300 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:24:26,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 2142 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 05:24:26,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105276 states. [2022-12-14 05:24:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105276 to 105274. [2022-12-14 05:24:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105274 states, 78623 states have (on average 1.4298614909123284) internal successors, (112420), 78631 states have internal predecessors, (112420), 26578 states have call successors, (26578), 70 states have call predecessors, (26578), 72 states have return successors, (26582), 26572 states have call predecessors, (26582), 26573 states have call successors, (26582) [2022-12-14 05:24:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105274 states to 105274 states and 165580 transitions. [2022-12-14 05:24:35,480 INFO L78 Accepts]: Start accepts. Automaton has 105274 states and 165580 transitions. Word has length 177 [2022-12-14 05:24:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:24:35,480 INFO L495 AbstractCegarLoop]: Abstraction has 105274 states and 165580 transitions. [2022-12-14 05:24:35,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 7.384615384615385) internal successors, (96), 15 states have internal predecessors, (96), 10 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2022-12-14 05:24:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 105274 states and 165580 transitions. [2022-12-14 05:24:35,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-14 05:24:35,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:24:35,708 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:24:35,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:24:35,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:24:35,910 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:24:35,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:24:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1960669454, now seen corresponding path program 1 times [2022-12-14 05:24:35,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:24:35,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316600926] [2022-12-14 05:24:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:24:35,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:24:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:24:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-14 05:24:38,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:24:38,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316600926] [2022-12-14 05:24:38,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316600926] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:24:38,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174032805] [2022-12-14 05:24:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:24:38,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:24:38,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:24:38,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:24:38,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfba0751-59e0-4d71-954e-1f24c12cf4d8/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:24:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:24:38,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 202 conjunts are in the unsatisfiable core [2022-12-14 05:24:38,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:24:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 05:24:42,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:25:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 05:25:04,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174032805] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:25:04,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [125274168] [2022-12-14 05:25:04,959 INFO L159 IcfgInterpreter]: Started Sifa with 120 locations of interest [2022-12-14 05:25:04,959 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:25:04,960 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:25:04,960 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:25:04,960 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:25:32,892 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 05:25:33,185 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 258 for LOIs [2022-12-14 05:25:35,514 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:25:35,810 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 516 for LOIs [2022-12-14 05:25:45,126 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 217 for LOIs [2022-12-14 05:25:45,159 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 245 for LOIs [2022-12-14 05:26:35,333 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 402 for LOIs [2022-12-14 05:26:35,538 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 401 for LOIs [2022-12-14 05:26:35,759 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 405 for LOIs [2022-12-14 05:26:36,235 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 405 for LOIs [2022-12-14 05:26:36,711 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 222 for LOIs [2022-12-14 05:26:36,744 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 446 for LOIs [2022-12-14 05:26:37,203 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 402 for LOIs [2022-12-14 05:26:37,420 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailSignKey with input of size 219 for LOIs [2022-12-14 05:26:37,451 INFO L180 IcfgInterpreter]: Interpretation finished