./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/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_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/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_639fa362-1d05-47a7-baaa-dd43f5ac23c5/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 aa34593061e3e0a5eeea5cc3a3930a050ef50f60dff03c88799c643f69d7f641 --- 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 06:20:18,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:20:18,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:20:18,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:20:18,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:20:18,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:20:18,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:20:18,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:20:18,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:20:18,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:20:18,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:20:18,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:20:18,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:20:18,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:20:18,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:20:18,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:20:18,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:20:18,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:20:18,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:20:18,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:20:18,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:20:18,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:20:18,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:20:18,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:20:18,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:20:18,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:20:18,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:20:18,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:20:18,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:20:18,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:20:18,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:20:18,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:20:18,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:20:18,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:20:18,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:20:18,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:20:18,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:20:18,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:20:18,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:20:18,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:20:18,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:20:18,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:20:18,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:20:18,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:20:18,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:20:18,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:20:18,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:20:18,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:20:18,324 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:20:18,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:20:18,324 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:20:18,324 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:20:18,324 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:20:18,324 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:20:18,325 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:20:18,325 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:20:18,325 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:20:18,325 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:20:18,325 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:20:18,326 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:20:18,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:20:18,326 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:20:18,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:20:18,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:20:18,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:20:18,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:20:18,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:20:18,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:20:18,328 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:20:18,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:20:18,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:20:18,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:20:18,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:20:18,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:20:18,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:20:18,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:20:18,329 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:20:18,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:20:18,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:20:18,330 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:20:18,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:20:18,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:20:18,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:20:18,330 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_639fa362-1d05-47a7-baaa-dd43f5ac23c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa34593061e3e0a5eeea5cc3a3930a050ef50f60dff03c88799c643f69d7f641 [2022-12-14 06:20:18,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:20:18,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:20:18,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:20:18,535 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:20:18,535 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:20:18,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_product23.cil.c [2022-12-14 06:20:21,161 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:20:21,344 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:20:21,344 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/sv-benchmarks/c/product-lines/email_spec4_product23.cil.c [2022-12-14 06:20:21,356 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/data/b09e6bc59/f3985c7b454b429d871d84b82515f2ef/FLAGfc0ca40f4 [2022-12-14 06:20:21,367 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/data/b09e6bc59/f3985c7b454b429d871d84b82515f2ef [2022-12-14 06:20:21,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:20:21,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:20:21,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:20:21,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:20:21,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:20:21,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48001640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21, skipping insertion in model container [2022-12-14 06:20:21,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:20:21,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:20:21,664 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,708 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,712 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,713 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,714 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,720 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,775 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,776 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,778 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,782 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_639fa362-1d05-47a7-baaa-dd43f5ac23c5/sv-benchmarks/c/product-lines/email_spec4_product23.cil.c[63051,63064] [2022-12-14 06:20:21,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:20:21,797 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:20:21,838 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,843 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,844 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,844 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,845 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,848 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,860 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,861 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,863 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:20:21,865 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_639fa362-1d05-47a7-baaa-dd43f5ac23c5/sv-benchmarks/c/product-lines/email_spec4_product23.cil.c[63051,63064] [2022-12-14 06:20:21,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:20:21,887 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:20:21,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21 WrapperNode [2022-12-14 06:20:21,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:20:21,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:20:21,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:20:21,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:20:21,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,942 INFO L138 Inliner]: procedures = 130, calls = 218, calls flagged for inlining = 59, calls inlined = 52, statements flattened = 970 [2022-12-14 06:20:21,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:20:21,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:20:21,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:20:21,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:20:21,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,986 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:21,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:20:21,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:20:21,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:20:21,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:20:21,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (1/1) ... [2022-12-14 06:20:22,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:20:22,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:20:22,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:20:22,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:20:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 06:20:22,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 06:20:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 06:20:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 06:20:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 06:20:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 06:20:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 06:20:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 06:20:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 06:20:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 06:20:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 06:20:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 06:20:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 06:20:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 06:20:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 06:20:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 06:20:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 06:20:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 06:20:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 06:20:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 06:20:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 06:20:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 06:20:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 06:20:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 06:20:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 06:20:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:20:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 06:20:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 06:20:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 06:20:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 06:20:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 06:20:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 06:20:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 06:20:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 06:20:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 06:20:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 06:20:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 06:20:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 06:20:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 06:20:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 06:20:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 06:20:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 06:20:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:20:22,065 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 06:20:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 06:20:22,066 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 06:20:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 06:20:22,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:20:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:20:22,232 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:20:22,234 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:20:22,827 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:20:23,160 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:20:23,160 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:20:23,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:20:23 BoogieIcfgContainer [2022-12-14 06:20:23,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:20:23,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:20:23,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:20:23,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:20:23,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:20:21" (1/3) ... [2022-12-14 06:20:23,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cd8268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:20:23, skipping insertion in model container [2022-12-14 06:20:23,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:20:21" (2/3) ... [2022-12-14 06:20:23,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cd8268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:20:23, skipping insertion in model container [2022-12-14 06:20:23,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:20:23" (3/3) ... [2022-12-14 06:20:23,169 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product23.cil.c [2022-12-14 06:20:23,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:20:23,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:20:23,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:20:23,232 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;@42e1af45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:20:23,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:20:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 106 states have internal predecessors, (137), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 06:20:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 06:20:23,247 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:20:23,248 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 06:20:23,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:20:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:20:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1955983480, now seen corresponding path program 1 times [2022-12-14 06:20:23,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:20:23,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508672766] [2022-12-14 06:20:23,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:20:23,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:20:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:20:23,506 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 06:20:23,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:20:23,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508672766] [2022-12-14 06:20:23,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508672766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:20:23,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:20:23,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:20:23,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851050274] [2022-12-14 06:20:23,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:20:23,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 06:20:23,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:20:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 06:20:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:20:23,535 INFO L87 Difference]: Start difference. First operand has 179 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 106 states have internal predecessors, (137), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) 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 06:20:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:20:23,632 INFO L93 Difference]: Finished difference Result 266 states and 353 transitions. [2022-12-14 06:20:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 06:20:23,634 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 06:20:23,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:20:23,641 INFO L225 Difference]: With dead ends: 266 [2022-12-14 06:20:23,641 INFO L226 Difference]: Without dead ends: 176 [2022-12-14 06:20:23,644 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 06:20:23,646 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:20:23,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:20:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-12-14 06:20:23,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-12-14 06:20:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 101 states have (on average 1.297029702970297) internal successors, (131), 103 states have internal predecessors, (131), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 06:20:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 234 transitions. [2022-12-14 06:20:23,685 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 234 transitions. Word has length 65 [2022-12-14 06:20:23,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:20:23,686 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 234 transitions. [2022-12-14 06:20:23,686 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 06:20:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 234 transitions. [2022-12-14 06:20:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 06:20:23,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:20:23,689 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 06:20:23,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:20:23,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:20:23,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:20:23,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1891453223, now seen corresponding path program 1 times [2022-12-14 06:20:23,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:20:23,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523124812] [2022-12-14 06:20:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:20:23,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:20:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:20:23,809 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 06:20:23,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:20:23,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523124812] [2022-12-14 06:20:23,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523124812] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:20:23,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:20:23,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:20:23,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142278016] [2022-12-14 06:20:23,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:20:23,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:20:23,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:20:23,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:20:23,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:20:23,812 INFO L87 Difference]: Start difference. First operand 176 states and 234 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 06:20:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:20:23,899 INFO L93 Difference]: Finished difference Result 262 states and 338 transitions. [2022-12-14 06:20:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:20:23,899 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 06:20:23,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:20:23,901 INFO L225 Difference]: With dead ends: 262 [2022-12-14 06:20:23,901 INFO L226 Difference]: Without dead ends: 178 [2022-12-14 06:20:23,902 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 06:20:23,902 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:20:23,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 397 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:20:23,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-12-14 06:20:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-12-14 06:20:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 105 states have internal predecessors, (133), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 06:20:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 236 transitions. [2022-12-14 06:20:23,915 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 236 transitions. Word has length 66 [2022-12-14 06:20:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:20:23,915 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 236 transitions. [2022-12-14 06:20:23,915 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 06:20:23,916 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 236 transitions. [2022-12-14 06:20:23,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 06:20:23,917 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:20:23,917 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 06:20:23,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:20:23,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:20:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:20:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1661541867, now seen corresponding path program 1 times [2022-12-14 06:20:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:20:23,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388311522] [2022-12-14 06:20:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:20:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:20:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:20:24,005 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 06:20:24,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:20:24,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388311522] [2022-12-14 06:20:24,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388311522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:20:24,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:20:24,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:20:24,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507216973] [2022-12-14 06:20:24,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:20:24,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:20:24,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:20:24,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:20:24,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:20:24,008 INFO L87 Difference]: Start difference. First operand 178 states and 236 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 06:20:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:20:24,102 INFO L93 Difference]: Finished difference Result 391 states and 539 transitions. [2022-12-14 06:20:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:20:24,102 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 06:20:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:20:24,104 INFO L225 Difference]: With dead ends: 391 [2022-12-14 06:20:24,104 INFO L226 Difference]: Without dead ends: 231 [2022-12-14 06:20:24,106 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 06:20:24,107 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 59 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:20:24,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 413 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:20:24,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-12-14 06:20:24,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 226. [2022-12-14 06:20:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 139 states have internal predecessors, (188), 66 states have call successors, (66), 22 states have call predecessors, (66), 22 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-12-14 06:20:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 319 transitions. [2022-12-14 06:20:24,128 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 319 transitions. Word has length 71 [2022-12-14 06:20:24,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:20:24,129 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 319 transitions. [2022-12-14 06:20:24,129 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 06:20:24,129 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 319 transitions. [2022-12-14 06:20:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 06:20:24,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:20:24,132 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 06:20:24,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:20:24,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:20:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:20:24,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1981096482, now seen corresponding path program 1 times [2022-12-14 06:20:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:20:24,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072375027] [2022-12-14 06:20:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:20:24,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:20:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:20:24,249 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 06:20:24,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:20:24,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072375027] [2022-12-14 06:20:24,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072375027] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:20:24,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460097074] [2022-12-14 06:20:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:20:24,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:20:24,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:20:24,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:20:24,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:20:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:20:24,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:20:24,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:20:24,517 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 06:20:24,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:20:24,580 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 06:20:24,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460097074] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:20:24,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [291641650] [2022-12-14 06:20:24,602 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-12-14 06:20:24,602 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:20:24,606 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:20:24,611 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:20:24,611 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:20:50,204 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 06:20:50,495 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 06:20:50,785 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-12-14 06:20:52,412 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 06:20:52,451 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-12-14 06:20:55,076 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 265 for LOIs [2022-12-14 06:20:59,568 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 450 for LOIs [2022-12-14 06:21:00,131 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 478 for LOIs [2022-12-14 06:21:04,765 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 247 for LOIs [2022-12-14 06:21:04,804 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 250 for LOIs [2022-12-14 06:21:04,848 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:21:48,423 WARN L233 SmtUtils]: Spent 10.51s on a formula simplification. DAG size of input: 583 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:22:56,174 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3089#(and (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 1) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (= ~__ste_Client_counter~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 1) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1|) (<= |old(~queued_client~0)| 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 1) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1|) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_~tmp~10#1| 2147483648)) (<= ~__ste_Client_AddressBook2_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (<= ~__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) (<= 0 ~__GUIDSL_ROOT_PRODUCTION~0) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_Email_counter~0 0) (<= ~__ste_Client_Keyring2_User2~0 0) (<= ~__ste_email_body1~0.offset 0) (<= ~__ste_client_privateKey2~0 789) (<= |outgoing__wrappee__AutoResponder_~tmp~10#1| 2147483647) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 0 ~__ste_Client_AddressBook2_Alias1~0) (<= 0 ~__ste_Client_Keyring2_User2~0) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 ~__ste_Client_Keyring1_User2~0) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 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) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 ~__ste_email_id1~0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (<= ~__ste_Client_AddressBook0_Address1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__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) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 1) (<= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~16#1| 2147483647) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= ~__ste_Client_AddressBook0_Address0~0 0) (= 3 ~chuck~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_email_signKey1~0) (<= 0 ~__ste_email_body1~0.offset) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_client_name2~0.offset 0) (<= ~__ste_email_isSigned1~0 0) (<= 0 ~__ste_Email_counter~0) (<= ~__ste_email_subject0~0.offset 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#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) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~16#1| 2147483648)) (<= ~__ste_ClientKeyring_size1~0 0) (<= ~__ste_Client_Keyring1_User2~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 ~head~0.base) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_forwardReceiver0~0 0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~5#1| 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (<= 0 ~__ste_email_subject0~0.offset) (= ~rjh~0 2) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= ~__ste_Client_AddressBook1_Alias0~0 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) (= ~__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) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= ~__ste_Client_AddressBook0_Address2~0 0) (<= 1 ~__ste_client_autoResponse1~0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~5#1| ~__ste_client_privateKey0~0) (<= ~head~0.base 0) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1|) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (<= 0 ~__ste_Client_AddressBook2_Address0~0) (<= 0 ~__ste_Client_Keyring2_User1~0) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= ~__ste_client_name0~0.offset 0) (= ~__ste_client_outbuffer1~0 0) (not (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1| 0)) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= 0 |#NULL.offset|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= ~__ste_Client_AddressBook2_Address1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_encryptionKey1~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 ~__ste_client_name1~0.base) (<= 0 ~__ste_email_id0~0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2022-12-14 06:22:56,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:22:56,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:22:56,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 06:22:56,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681851017] [2022-12-14 06:22:56,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:22:56,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:22:56,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:56,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:22:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3140, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 06:22:56,177 INFO L87 Difference]: Start difference. First operand 226 states and 319 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 06:22:56,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:56,396 INFO L93 Difference]: Finished difference Result 585 states and 888 transitions. [2022-12-14 06:22:56,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:22:56,397 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 06:22:56,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:56,400 INFO L225 Difference]: With dead ends: 585 [2022-12-14 06:22:56,400 INFO L226 Difference]: Without dead ends: 501 [2022-12-14 06:22:56,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 111.3s TimeCoverageRelationStatistics Valid=166, Invalid=3140, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 06:22:56,402 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 219 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:56,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 883 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:22:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-12-14 06:22:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 486. [2022-12-14 06:22:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 318 states have (on average 1.490566037735849) internal successors, (474), 320 states have internal predecessors, (474), 145 states have call successors, (145), 22 states have call predecessors, (145), 22 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2022-12-14 06:22:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 763 transitions. [2022-12-14 06:22:56,441 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 763 transitions. Word has length 72 [2022-12-14 06:22:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:56,442 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 763 transitions. [2022-12-14 06:22:56,442 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 06:22:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 763 transitions. [2022-12-14 06:22:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 06:22:56,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:56,448 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 06:22:56,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:22:56,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:22:56,649 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:22:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1760619040, now seen corresponding path program 1 times [2022-12-14 06:22:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:56,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124946903] [2022-12-14 06:22:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:56,721 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 06:22:56,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:56,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124946903] [2022-12-14 06:22:56,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124946903] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:56,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:56,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:22:56,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480616539] [2022-12-14 06:22:56,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:56,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:22:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:22:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:22:56,724 INFO L87 Difference]: Start difference. First operand 486 states and 763 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 06:22:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:56,835 INFO L93 Difference]: Finished difference Result 1202 states and 1924 transitions. [2022-12-14 06:22:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:22:56,836 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 06:22:56,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:56,840 INFO L225 Difference]: With dead ends: 1202 [2022-12-14 06:22:56,840 INFO L226 Difference]: Without dead ends: 748 [2022-12-14 06:22:56,841 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 06:22:56,842 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 57 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:56,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 424 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:22:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-12-14 06:22:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 743. [2022-12-14 06:22:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 496 states have (on average 1.5060483870967742) internal successors, (747), 498 states have internal predecessors, (747), 224 states have call successors, (224), 22 states have call predecessors, (224), 22 states have return successors, (223), 222 states have call predecessors, (223), 223 states have call successors, (223) [2022-12-14 06:22:56,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1194 transitions. [2022-12-14 06:22:56,888 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1194 transitions. Word has length 78 [2022-12-14 06:22:56,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:56,888 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1194 transitions. [2022-12-14 06:22:56,888 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 06:22:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1194 transitions. [2022-12-14 06:22:56,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 06:22:56,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:56,893 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 06:22:56,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:22:56,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:22:56,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:56,894 INFO L85 PathProgramCache]: Analyzing trace with hash 454563238, now seen corresponding path program 1 times [2022-12-14 06:22:56,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:56,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184443848] [2022-12-14 06:22:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:56,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:56,962 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 06:22:56,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:56,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184443848] [2022-12-14 06:22:56,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184443848] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:56,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:56,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:22:56,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499944034] [2022-12-14 06:22:56,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:56,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:22:56,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:56,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:22:56,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:22:56,965 INFO L87 Difference]: Start difference. First operand 743 states and 1194 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 06:22:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:57,101 INFO L93 Difference]: Finished difference Result 1824 states and 2971 transitions. [2022-12-14 06:22:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:22:57,102 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 06:22:57,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:57,108 INFO L225 Difference]: With dead ends: 1824 [2022-12-14 06:22:57,108 INFO L226 Difference]: Without dead ends: 1143 [2022-12-14 06:22:57,111 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 06:22:57,112 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 55 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:57,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:22:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-12-14 06:22:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1138. [2022-12-14 06:22:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 772 states have (on average 1.511658031088083) internal successors, (1167), 774 states have internal predecessors, (1167), 343 states have call successors, (343), 22 states have call predecessors, (343), 22 states have return successors, (342), 341 states have call predecessors, (342), 342 states have call successors, (342) [2022-12-14 06:22:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1852 transitions. [2022-12-14 06:22:57,178 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1852 transitions. Word has length 79 [2022-12-14 06:22:57,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:57,178 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 1852 transitions. [2022-12-14 06:22:57,178 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 06:22:57,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1852 transitions. [2022-12-14 06:22:57,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 06:22:57,184 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:57,184 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 06:22:57,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 06:22:57,185 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:22:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash -721474222, now seen corresponding path program 1 times [2022-12-14 06:22:57,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:57,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339699478] [2022-12-14 06:22:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:57,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:57,268 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 06:22:57,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:57,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339699478] [2022-12-14 06:22:57,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339699478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:57,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:57,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:22:57,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903234945] [2022-12-14 06:22:57,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:57,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:22:57,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:57,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:22:57,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:22:57,270 INFO L87 Difference]: Start difference. First operand 1138 states and 1852 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 06:22:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:57,425 INFO L93 Difference]: Finished difference Result 2727 states and 4483 transitions. [2022-12-14 06:22:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:22:57,425 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 06:22:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:57,431 INFO L225 Difference]: With dead ends: 2727 [2022-12-14 06:22:57,431 INFO L226 Difference]: Without dead ends: 1731 [2022-12-14 06:22:57,434 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 06:22:57,434 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 53 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:57,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 403 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:22:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2022-12-14 06:22:57,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1726. [2022-12-14 06:22:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1198 states have (on average 1.515025041736227) internal successors, (1815), 1200 states have internal predecessors, (1815), 505 states have call successors, (505), 22 states have call predecessors, (505), 22 states have return successors, (504), 503 states have call predecessors, (504), 504 states have call successors, (504) [2022-12-14 06:22:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2824 transitions. [2022-12-14 06:22:57,521 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2824 transitions. Word has length 80 [2022-12-14 06:22:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:57,522 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2824 transitions. [2022-12-14 06:22:57,522 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 06:22:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2824 transitions. [2022-12-14 06:22:57,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 06:22:57,526 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:57,526 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 06:22:57,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 06:22:57,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:22:57,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:57,527 INFO L85 PathProgramCache]: Analyzing trace with hash -576691547, now seen corresponding path program 1 times [2022-12-14 06:22:57,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:57,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526234434] [2022-12-14 06:22:57,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:57,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:57,580 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 06:22:57,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:57,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526234434] [2022-12-14 06:22:57,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526234434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:57,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:57,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:22:57,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257477850] [2022-12-14 06:22:57,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:57,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:22:57,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:57,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:22:57,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:22:57,582 INFO L87 Difference]: Start difference. First operand 1726 states and 2824 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 06:22:57,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:57,791 INFO L93 Difference]: Finished difference Result 4112 states and 6791 transitions. [2022-12-14 06:22:57,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:22:57,792 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 06:22:57,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:57,806 INFO L225 Difference]: With dead ends: 4112 [2022-12-14 06:22:57,806 INFO L226 Difference]: Without dead ends: 2665 [2022-12-14 06:22:57,811 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 06:22:57,812 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 51 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:57,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 403 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:22:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-12-14 06:22:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2660. [2022-12-14 06:22:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2660 states, 1887 states have (on average 1.516163222045575) internal successors, (2861), 1889 states have internal predecessors, (2861), 750 states have call successors, (750), 22 states have call predecessors, (750), 22 states have return successors, (749), 748 states have call predecessors, (749), 749 states have call successors, (749) [2022-12-14 06:22:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 4360 transitions. [2022-12-14 06:22:58,018 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 4360 transitions. Word has length 81 [2022-12-14 06:22:58,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:58,018 INFO L495 AbstractCegarLoop]: Abstraction has 2660 states and 4360 transitions. [2022-12-14 06:22:58,018 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 06:22:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 4360 transitions. [2022-12-14 06:22:58,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 06:22:58,027 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:58,027 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 06:22:58,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 06:22:58,028 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:22:58,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1741256938, now seen corresponding path program 1 times [2022-12-14 06:22:58,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:58,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936510801] [2022-12-14 06:22:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:58,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:58,105 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 06:22:58,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:58,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936510801] [2022-12-14 06:22:58,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936510801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:58,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:58,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:22:58,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293159413] [2022-12-14 06:22:58,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:58,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:22:58,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:58,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:22:58,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:22:58,107 INFO L87 Difference]: Start difference. First operand 2660 states and 4360 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 06:22:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:58,356 INFO L93 Difference]: Finished difference Result 6628 states and 10951 transitions. [2022-12-14 06:22:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:22:58,356 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 06:22:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:58,371 INFO L225 Difference]: With dead ends: 6628 [2022-12-14 06:22:58,371 INFO L226 Difference]: Without dead ends: 4390 [2022-12-14 06:22:58,377 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 06:22:58,378 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 49 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:58,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 416 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:22:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2022-12-14 06:22:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 4385. [2022-12-14 06:22:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 3119 states have (on average 1.504969541519718) internal successors, (4694), 3121 states have internal predecessors, (4694), 1243 states have call successors, (1243), 22 states have call predecessors, (1243), 22 states have return successors, (1242), 1241 states have call predecessors, (1242), 1242 states have call successors, (1242) [2022-12-14 06:22:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 7179 transitions. [2022-12-14 06:22:58,579 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 7179 transitions. Word has length 82 [2022-12-14 06:22:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:58,579 INFO L495 AbstractCegarLoop]: Abstraction has 4385 states and 7179 transitions. [2022-12-14 06:22:58,580 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 06:22:58,580 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 7179 transitions. [2022-12-14 06:22:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 06:22:58,588 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:58,588 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 06:22:58,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 06:22:58,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:22:58,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:58,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1183761633, now seen corresponding path program 1 times [2022-12-14 06:22:58,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:58,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782831146] [2022-12-14 06:22:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:58,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:58,643 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 06:22:58,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:58,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782831146] [2022-12-14 06:22:58,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782831146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:58,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:58,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:22:58,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549574082] [2022-12-14 06:22:58,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:58,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:22:58,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:58,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:22:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:22:58,645 INFO L87 Difference]: Start difference. First operand 4385 states and 7179 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 06:22:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:22:58,998 INFO L93 Difference]: Finished difference Result 11044 states and 18236 transitions. [2022-12-14 06:22:58,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:22:58,999 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 06:22:58,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:22:59,033 INFO L225 Difference]: With dead ends: 11044 [2022-12-14 06:22:59,033 INFO L226 Difference]: Without dead ends: 7347 [2022-12-14 06:22:59,044 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 06:22:59,045 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 47 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:22:59,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:22:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2022-12-14 06:22:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 7342. [2022-12-14 06:22:59,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7342 states, 5254 states have (on average 1.4996193376475067) internal successors, (7879), 5256 states have internal predecessors, (7879), 2065 states have call successors, (2065), 22 states have call predecessors, (2065), 22 states have return successors, (2064), 2063 states have call predecessors, (2064), 2064 states have call successors, (2064) [2022-12-14 06:22:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7342 states to 7342 states and 12008 transitions. [2022-12-14 06:22:59,582 INFO L78 Accepts]: Start accepts. Automaton has 7342 states and 12008 transitions. Word has length 83 [2022-12-14 06:22:59,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:22:59,583 INFO L495 AbstractCegarLoop]: Abstraction has 7342 states and 12008 transitions. [2022-12-14 06:22:59,583 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 06:22:59,583 INFO L276 IsEmpty]: Start isEmpty. Operand 7342 states and 12008 transitions. [2022-12-14 06:22:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 06:22:59,597 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:22:59,598 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 06:22:59,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 06:22:59,598 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:22:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:22:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash -587798060, now seen corresponding path program 1 times [2022-12-14 06:22:59,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:22:59,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942828263] [2022-12-14 06:22:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:22:59,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:22:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:22:59,669 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 06:22:59,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:22:59,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942828263] [2022-12-14 06:22:59,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942828263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:22:59,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:22:59,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:22:59,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930493167] [2022-12-14 06:22:59,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:22:59,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:22:59,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:22:59,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:22:59,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:22:59,671 INFO L87 Difference]: Start difference. First operand 7342 states and 12008 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 06:23:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:00,332 INFO L93 Difference]: Finished difference Result 18511 states and 30498 transitions. [2022-12-14 06:23:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:23:00,333 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 06:23:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:00,378 INFO L225 Difference]: With dead ends: 18511 [2022-12-14 06:23:00,378 INFO L226 Difference]: Without dead ends: 12291 [2022-12-14 06:23:00,394 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 06:23:00,395 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 45 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:00,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 404 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:23:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12291 states. [2022-12-14 06:23:00,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12291 to 12286. [2022-12-14 06:23:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12286 states, 8995 states have (on average 1.500833796553641) internal successors, (13500), 8997 states have internal predecessors, (13500), 3268 states have call successors, (3268), 22 states have call predecessors, (3268), 22 states have return successors, (3267), 3266 states have call predecessors, (3267), 3267 states have call successors, (3267) [2022-12-14 06:23:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12286 states to 12286 states and 20035 transitions. [2022-12-14 06:23:00,996 INFO L78 Accepts]: Start accepts. Automaton has 12286 states and 20035 transitions. Word has length 84 [2022-12-14 06:23:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:00,996 INFO L495 AbstractCegarLoop]: Abstraction has 12286 states and 20035 transitions. [2022-12-14 06:23:00,997 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 06:23:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 12286 states and 20035 transitions. [2022-12-14 06:23:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 06:23:01,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:01,010 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 06:23:01,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 06:23:01,010 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:23:01,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:01,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1571401152, now seen corresponding path program 1 times [2022-12-14 06:23:01,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:01,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509844965] [2022-12-14 06:23:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:01,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:01,072 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 06:23:01,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:01,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509844965] [2022-12-14 06:23:01,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509844965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:01,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:01,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:23:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976102864] [2022-12-14 06:23:01,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:23:01,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:01,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:23:01,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:23:01,074 INFO L87 Difference]: Start difference. First operand 12286 states and 20035 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 06:23:01,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:01,942 INFO L93 Difference]: Finished difference Result 32515 states and 53360 transitions. [2022-12-14 06:23:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:23:01,943 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 06:23:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:02,001 INFO L225 Difference]: With dead ends: 32515 [2022-12-14 06:23:02,001 INFO L226 Difference]: Without dead ends: 21803 [2022-12-14 06:23:02,024 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 06:23:02,024 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 43 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:02,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:23:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21803 states. [2022-12-14 06:23:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21803 to 21798. [2022-12-14 06:23:03,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21798 states, 16057 states have (on average 1.4929937099084511) internal successors, (23973), 16059 states have internal predecessors, (23973), 5718 states have call successors, (5718), 22 states have call predecessors, (5718), 22 states have return successors, (5717), 5716 states have call predecessors, (5717), 5717 states have call successors, (5717) [2022-12-14 06:23:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21798 states to 21798 states and 35408 transitions. [2022-12-14 06:23:03,247 INFO L78 Accepts]: Start accepts. Automaton has 21798 states and 35408 transitions. Word has length 85 [2022-12-14 06:23:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:03,247 INFO L495 AbstractCegarLoop]: Abstraction has 21798 states and 35408 transitions. [2022-12-14 06:23:03,247 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 06:23:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 21798 states and 35408 transitions. [2022-12-14 06:23:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 06:23:03,260 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:03,260 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 06:23:03,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 06:23:03,261 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:23:03,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:03,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1153792390, now seen corresponding path program 1 times [2022-12-14 06:23:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:03,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862994846] [2022-12-14 06:23:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:03,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:03,331 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 06:23:03,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:03,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862994846] [2022-12-14 06:23:03,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862994846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:03,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:03,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:23:03,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181513059] [2022-12-14 06:23:03,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:03,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:23:03,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:03,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:23:03,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:23:03,333 INFO L87 Difference]: Start difference. First operand 21798 states and 35408 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 06:23:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:04,865 INFO L93 Difference]: Finished difference Result 59202 states and 96612 transitions. [2022-12-14 06:23:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:23:04,866 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 06:23:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:04,994 INFO L225 Difference]: With dead ends: 59202 [2022-12-14 06:23:04,994 INFO L226 Difference]: Without dead ends: 39573 [2022-12-14 06:23:05,034 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 06:23:05,035 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 41 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:05,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:23:05,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39573 states. [2022-12-14 06:23:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39573 to 39568. [2022-12-14 06:23:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39568 states, 29314 states have (on average 1.4821928088967729) internal successors, (43449), 29316 states have internal predecessors, (43449), 10231 states have call successors, (10231), 22 states have call predecessors, (10231), 22 states have return successors, (10230), 10229 states have call predecessors, (10230), 10230 states have call successors, (10230) [2022-12-14 06:23:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39568 states to 39568 states and 63910 transitions. [2022-12-14 06:23:07,230 INFO L78 Accepts]: Start accepts. Automaton has 39568 states and 63910 transitions. Word has length 86 [2022-12-14 06:23:07,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:07,230 INFO L495 AbstractCegarLoop]: Abstraction has 39568 states and 63910 transitions. [2022-12-14 06:23:07,230 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 06:23:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 39568 states and 63910 transitions. [2022-12-14 06:23:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 06:23:07,242 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:07,242 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 06:23:07,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 06:23:07,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:23:07,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:07,243 INFO L85 PathProgramCache]: Analyzing trace with hash -606583008, now seen corresponding path program 1 times [2022-12-14 06:23:07,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:07,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525131653] [2022-12-14 06:23:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:07,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:07,288 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 06:23:07,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:07,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525131653] [2022-12-14 06:23:07,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525131653] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:23:07,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:23:07,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:23:07,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976431186] [2022-12-14 06:23:07,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:23:07,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:23:07,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:23:07,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:23:07,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:23:07,291 INFO L87 Difference]: Start difference. First operand 39568 states and 63910 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 06:23:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:23:10,334 INFO L93 Difference]: Finished difference Result 73100 states and 118247 transitions. [2022-12-14 06:23:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:23:10,335 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 06:23:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:23:10,566 INFO L225 Difference]: With dead ends: 73100 [2022-12-14 06:23:10,566 INFO L226 Difference]: Without dead ends: 73016 [2022-12-14 06:23:10,593 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 06:23:10,594 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 39 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:23:10,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:23:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73016 states. [2022-12-14 06:23:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73016 to 73011. [2022-12-14 06:23:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73011 states, 54389 states have (on average 1.4681461324900256) internal successors, (79851), 54391 states have internal predecessors, (79851), 18599 states have call successors, (18599), 22 states have call predecessors, (18599), 22 states have return successors, (18598), 18597 states have call predecessors, (18598), 18598 states have call successors, (18598) [2022-12-14 06:23:14,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73011 states to 73011 states and 117048 transitions. [2022-12-14 06:23:14,282 INFO L78 Accepts]: Start accepts. Automaton has 73011 states and 117048 transitions. Word has length 87 [2022-12-14 06:23:14,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:23:14,282 INFO L495 AbstractCegarLoop]: Abstraction has 73011 states and 117048 transitions. [2022-12-14 06:23:14,283 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 06:23:14,283 INFO L276 IsEmpty]: Start isEmpty. Operand 73011 states and 117048 transitions. [2022-12-14 06:23:14,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 06:23:14,296 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:23:14,296 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 06:23:14,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 06:23:14,296 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:23:14,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:23:14,297 INFO L85 PathProgramCache]: Analyzing trace with hash -526179173, now seen corresponding path program 1 times [2022-12-14 06:23:14,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:23:14,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946373935] [2022-12-14 06:23:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:14,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:23:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 06:23:15,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:23:15,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946373935] [2022-12-14 06:23:15,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946373935] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:23:15,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731345578] [2022-12-14 06:23:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:23:15,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:23:15,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:23:15,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:23:15,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:23:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:23:15,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 87 conjunts are in the unsatisfiable core [2022-12-14 06:23:15,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:23:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 06:23:15,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:23:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 06:23:18,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731345578] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:23:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [444831656] [2022-12-14 06:23:18,052 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-12-14 06:23:18,052 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:23:18,053 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:23:18,053 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:23:18,053 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:23:43,372 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 06:23:43,712 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 06:23:44,008 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-12-14 06:23:45,509 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2022-12-14 06:23:45,544 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 255 for LOIs [2022-12-14 06:23:48,138 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 261 for LOIs [2022-12-14 06:23:52,225 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 454 for LOIs [2022-12-14 06:23:52,774 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-12-14 06:23:57,268 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 243 for LOIs [2022-12-14 06:23:57,305 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 246 for LOIs [2022-12-14 06:23:57,346 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:26:01,080 WARN L233 SmtUtils]: Spent 8.31s on a formula simplification. DAG size of input: 477 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:26:53,762 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '643848#(and (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 1) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (= ~__ste_Client_counter~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 1) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1|) (<= |old(~queued_client~0)| 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= ~chuck~0 3) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 1) (<= 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) (<= ~__ste_client_name0~0.base 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (<= 0 ~__ste_Client_AddressBook0_Alias1~0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1|) (<= 0 ~__SELECTED_FEATURE_AutoResponder~0) (= ~__ste_email_body0~0.offset 0) (<= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 ~__ste_email_isSigned1~0) (<= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= ~__ste_Client_Keyring1_PublicKey0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_~tmp~10#1| 2147483648)) (<= ~__ste_Client_AddressBook2_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (<= ~__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) (<= 0 ~__GUIDSL_ROOT_PRODUCTION~0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_Email_counter~0 0) (<= ~__ste_Client_Keyring2_User2~0 0) (<= ~__ste_email_body1~0.offset 0) (<= ~__ste_client_privateKey2~0 789) (<= |outgoing__wrappee__AutoResponder_~tmp~10#1| 2147483647) (<= 0 ~__SELECTED_FEATURE_Decrypt~0) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 0 ~__ste_Client_AddressBook2_Alias1~0) (<= 0 ~__ste_Client_Keyring2_User2~0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 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) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 ~__ste_email_id1~0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (<= ~__ste_Client_AddressBook0_Address1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__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) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 1) (<= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~16#1| 2147483647) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= ~__ste_Client_AddressBook0_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_client_name0~0.base) (<= 0 ~__ste_email_signKey1~0) (<= 0 ~__ste_email_body1~0.offset) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_client_name2~0.offset 0) (<= ~__ste_email_isSigned1~0 0) (<= 0 ~__ste_Email_counter~0) (<= ~__ste_email_subject0~0.offset 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#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) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~16#1| 2147483648)) (<= ~__ste_ClientKeyring_size1~0 0) (<= ~__ste_Client_Keyring1_User2~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 ~head~0.base) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_forwardReceiver0~0 0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~5#1| 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (<= 0 ~__ste_email_subject0~0.offset) (= ~rjh~0 2) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= 0 ~__SELECTED_FEATURE_Keys~0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 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) (= ~__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) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= ~__ste_Client_AddressBook0_Address2~0 0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~5#1| ~__ste_client_privateKey0~0) (<= ~head~0.base 0) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1|) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (<= 0 ~__ste_Client_AddressBook2_Address0~0) (<= 0 ~__ste_Client_Keyring2_User1~0) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= ~__ste_client_name0~0.offset 0) (not (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1| 0)) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= 0 |#NULL.offset|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (<= 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) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__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) (<= 0 ~__ste_email_id0~0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2022-12-14 06:26:53,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:26:53,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:26:53,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 20] total 58 [2022-12-14 06:26:53,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897558300] [2022-12-14 06:26:53,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:26:53,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-12-14 06:26:53,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:26:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-12-14 06:26:53,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=885, Invalid=15117, Unknown=0, NotChecked=0, Total=16002 [2022-12-14 06:26:53,766 INFO L87 Difference]: Start difference. First operand 73011 states and 117048 transitions. Second operand has 58 states, 47 states have (on average 3.25531914893617) internal successors, (153), 42 states have internal predecessors, (153), 25 states have call successors, (46), 16 states have call predecessors, (46), 14 states have return successors, (38), 29 states have call predecessors, (38), 22 states have call successors, (38) [2022-12-14 06:27:04,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:27:04,071 INFO L93 Difference]: Finished difference Result 82665 states and 132642 transitions. [2022-12-14 06:27:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 06:27:04,072 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 47 states have (on average 3.25531914893617) internal successors, (153), 42 states have internal predecessors, (153), 25 states have call successors, (46), 16 states have call predecessors, (46), 14 states have return successors, (38), 29 states have call predecessors, (38), 22 states have call successors, (38) Word has length 88 [2022-12-14 06:27:04,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:27:04,340 INFO L225 Difference]: With dead ends: 82665 [2022-12-14 06:27:04,340 INFO L226 Difference]: Without dead ends: 82661 [2022-12-14 06:27:04,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8571 ImplicationChecksByTransitivity, 179.5s TimeCoverageRelationStatistics Valid=1368, Invalid=21282, Unknown=0, NotChecked=0, Total=22650 [2022-12-14 06:27:04,368 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 1415 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 9013 mSolverCounterSat, 1658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 10671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1658 IncrementalHoareTripleChecker+Valid, 9013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:27:04,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 2191 Invalid, 10671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1658 Valid, 9013 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-14 06:27:04,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82661 states. [2022-12-14 06:27:09,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82661 to 81790. [2022-12-14 06:27:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81790 states, 61196 states have (on average 1.4679554219230015) internal successors, (89833), 61201 states have internal predecessors, (89833), 20550 states have call successors, (20550), 44 states have call predecessors, (20550), 43 states have return successors, (20546), 20544 states have call predecessors, (20546), 20546 states have call successors, (20546) [2022-12-14 06:27:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81790 states to 81790 states and 130929 transitions. [2022-12-14 06:27:09,913 INFO L78 Accepts]: Start accepts. Automaton has 81790 states and 130929 transitions. Word has length 88 [2022-12-14 06:27:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:27:09,913 INFO L495 AbstractCegarLoop]: Abstraction has 81790 states and 130929 transitions. [2022-12-14 06:27:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 47 states have (on average 3.25531914893617) internal successors, (153), 42 states have internal predecessors, (153), 25 states have call successors, (46), 16 states have call predecessors, (46), 14 states have return successors, (38), 29 states have call predecessors, (38), 22 states have call successors, (38) [2022-12-14 06:27:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 81790 states and 130929 transitions. [2022-12-14 06:27:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 06:27:09,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:27:09,936 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:27:09,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 06:27:10,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 06:27:10,138 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:27:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:27:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash 449061522, now seen corresponding path program 1 times [2022-12-14 06:27:10,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:27:10,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277199501] [2022-12-14 06:27:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:27:10,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:27:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:27:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 06:27:10,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:27:10,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277199501] [2022-12-14 06:27:10,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277199501] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:27:10,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:27:10,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:27:10,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898895819] [2022-12-14 06:27:10,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:27:10,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:27:10,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:27:10,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:27:10,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:27:10,291 INFO L87 Difference]: Start difference. First operand 81790 states and 130929 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-14 06:27:15,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:27:15,364 INFO L93 Difference]: Finished difference Result 159619 states and 255992 transitions. [2022-12-14 06:27:15,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:27:15,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 95 [2022-12-14 06:27:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:27:15,609 INFO L225 Difference]: With dead ends: 159619 [2022-12-14 06:27:15,609 INFO L226 Difference]: Without dead ends: 81800 [2022-12-14 06:27:15,714 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 06:27:15,714 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 133 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:27:15,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 614 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:27:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81800 states. [2022-12-14 06:27:21,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81800 to 81790. [2022-12-14 06:27:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81790 states, 61196 states have (on average 1.4489672527616184) internal successors, (88671), 61201 states have internal predecessors, (88671), 20550 states have call successors, (20550), 44 states have call predecessors, (20550), 43 states have return successors, (20546), 20544 states have call predecessors, (20546), 20546 states have call successors, (20546) [2022-12-14 06:27:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81790 states to 81790 states and 129767 transitions. [2022-12-14 06:27:21,440 INFO L78 Accepts]: Start accepts. Automaton has 81790 states and 129767 transitions. Word has length 95 [2022-12-14 06:27:21,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:27:21,441 INFO L495 AbstractCegarLoop]: Abstraction has 81790 states and 129767 transitions. [2022-12-14 06:27:21,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-14 06:27:21,441 INFO L276 IsEmpty]: Start isEmpty. Operand 81790 states and 129767 transitions. [2022-12-14 06:27:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 06:27:21,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:27:21,464 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:27:21,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 06:27:21,464 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:27:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:27:21,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1519404133, now seen corresponding path program 1 times [2022-12-14 06:27:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:27:21,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987638114] [2022-12-14 06:27:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:27:21,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:27:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:27:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 06:27:22,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:27:22,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987638114] [2022-12-14 06:27:22,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987638114] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:27:22,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790331979] [2022-12-14 06:27:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:27:22,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:27:22,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:27:22,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:27:22,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:27:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:27:22,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 94 conjunts are in the unsatisfiable core [2022-12-14 06:27:22,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:27:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 06:27:23,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:27:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 06:27:25,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790331979] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:27:25,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [714925102] [2022-12-14 06:27:25,646 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-12-14 06:27:25,646 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:27:25,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:27:25,646 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:27:25,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:27:55,193 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 06:27:55,478 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 06:27:55,761 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-12-14 06:27:57,331 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-12-14 06:27:57,366 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 252 for LOIs [2022-12-14 06:27:59,953 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 258 for LOIs [2022-12-14 06:28:04,222 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 449 for LOIs [2022-12-14 06:28:04,756 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-12-14 06:28:09,188 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 240 for LOIs [2022-12-14 06:28:09,224 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 243 for LOIs [2022-12-14 06:28:09,264 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:28:51,680 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 587 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:29:25,723 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 472 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:29:44,624 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 449 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:29:51,664 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 476 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:30:21,727 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 518 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:30:26,300 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1337909#(and (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1|) (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (= ~__ste_email_isEncrypted1~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 1) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (= ~__ste_Client_counter~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (= ~__ste_Client_AddressBook2_Alias1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 1) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1|) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= |old(~queued_client~0)| 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 1) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1|) (= ~__ste_Email_counter~0 0) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_~tmp~10#1| 2147483648)) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= |outgoing__wrappee__AutoResponder_~tmp~10#1| 2147483647) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 1) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~16#1| 2147483647) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= ~__ste_Client_AddressBook0_Address0~0 0) (= 3 ~chuck~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1|) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_email_isSigned1~0 0) (<= ~__ste_email_subject0~0.offset 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~16#1| 2147483648)) (<= ~__ste_ClientKeyring_size1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 ~head~0.base) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_forwardReceiver0~0 0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~5#1| 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (<= 0 ~__ste_email_subject0~0.offset) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= ~__ste_Client_AddressBook1_Alias0~0 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 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (= ~__ste_email_subject1~0.base 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= |old(~queue_empty~0)| 1) (<= 0 ~__ste_Client_AddressBook0_Address0~0) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= ~__ste_Client_AddressBook0_Address2~0 0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~5#1| ~__ste_client_privateKey0~0) (= ~__ste_Client_Keyring2_User2~0 0) (<= ~head~0.base 0) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= |#NULL.offset| 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__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1|) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (= ~__ste_email_isEncrypted0~0 0) (<= 0 ~__ste_Client_Keyring2_User1~0) (= ~__ste_Client_AddressBook1_Address1~0 0) (= ~__ste_client_outbuffer1~0 0) (not (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1| 0)) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_encryptionKey1~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2022-12-14 06:30:26,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 06:30:26,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:30:26,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 22] total 63 [2022-12-14 06:30:26,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807162848] [2022-12-14 06:30:26,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 06:30:26,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-14 06:30:26,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:30:26,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-14 06:30:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=945, Invalid=16877, Unknown=0, NotChecked=0, Total=17822 [2022-12-14 06:30:26,304 INFO L87 Difference]: Start difference. First operand 81790 states and 129767 transitions. Second operand has 63 states, 51 states have (on average 3.4901960784313726) internal successors, (178), 47 states have internal predecessors, (178), 29 states have call successors, (49), 17 states have call predecessors, (49), 15 states have return successors, (41), 32 states have call predecessors, (41), 25 states have call successors, (41) [2022-12-14 06:30:38,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:38,553 INFO L93 Difference]: Finished difference Result 98762 states and 157031 transitions. [2022-12-14 06:30:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 06:30:38,553 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 51 states have (on average 3.4901960784313726) internal successors, (178), 47 states have internal predecessors, (178), 29 states have call successors, (49), 17 states have call predecessors, (49), 15 states have return successors, (41), 32 states have call predecessors, (41), 25 states have call successors, (41) Word has length 99 [2022-12-14 06:30:38,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:38,890 INFO L225 Difference]: With dead ends: 98762 [2022-12-14 06:30:38,890 INFO L226 Difference]: Without dead ends: 98758 [2022-12-14 06:30:38,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10073 ImplicationChecksByTransitivity, 140.4s TimeCoverageRelationStatistics Valid=1489, Invalid=23633, Unknown=0, NotChecked=0, Total=25122 [2022-12-14 06:30:38,926 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 1317 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 9406 mSolverCounterSat, 1455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 10861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1455 IncrementalHoareTripleChecker+Valid, 9406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:38,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 2163 Invalid, 10861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1455 Valid, 9406 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-14 06:30:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98758 states. [2022-12-14 06:30:45,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98758 to 98514. [2022-12-14 06:30:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98514 states, 73263 states have (on average 1.4507049943354764) internal successors, (106283), 74314 states have internal predecessors, (106283), 25200 states have call successors, (25200), 52 states have call predecessors, (25200), 50 states have return successors, (25196), 24147 states have call predecessors, (25196), 25196 states have call successors, (25196) [2022-12-14 06:30:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98514 states to 98514 states and 156679 transitions. [2022-12-14 06:30:46,116 INFO L78 Accepts]: Start accepts. Automaton has 98514 states and 156679 transitions. Word has length 99 [2022-12-14 06:30:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:46,117 INFO L495 AbstractCegarLoop]: Abstraction has 98514 states and 156679 transitions. [2022-12-14 06:30:46,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 51 states have (on average 3.4901960784313726) internal successors, (178), 47 states have internal predecessors, (178), 29 states have call successors, (49), 17 states have call predecessors, (49), 15 states have return successors, (41), 32 states have call predecessors, (41), 25 states have call successors, (41) [2022-12-14 06:30:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 98514 states and 156679 transitions. [2022-12-14 06:30:46,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 06:30:46,306 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:46,306 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-12-14 06:30:46,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 06:30:46,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 06:30:46,506 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:30:46,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1914214691, now seen corresponding path program 1 times [2022-12-14 06:30:46,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:30:46,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85192340] [2022-12-14 06:30:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:46,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:30:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 06:30:47,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:30:47,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85192340] [2022-12-14 06:30:47,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85192340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:30:47,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:30:47,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-14 06:30:47,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106854389] [2022-12-14 06:30:47,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:30:47,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 06:30:47,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:30:47,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 06:30:47,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-12-14 06:30:47,243 INFO L87 Difference]: Start difference. First operand 98514 states and 156679 transitions. Second operand has 20 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 06:30:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:54,956 INFO L93 Difference]: Finished difference Result 98666 states and 156899 transitions. [2022-12-14 06:30:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 06:30:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 111 [2022-12-14 06:30:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:55,226 INFO L225 Difference]: With dead ends: 98666 [2022-12-14 06:30:55,226 INFO L226 Difference]: Without dead ends: 98662 [2022-12-14 06:30:55,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 06:30:55,254 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 302 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:55,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 2609 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 06:30:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98662 states. [2022-12-14 06:31:03,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98662 to 98438. [2022-12-14 06:31:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98438 states, 73222 states have (on average 1.4508617628581575) internal successors, (106235), 74271 states have internal predecessors, (106235), 25175 states have call successors, (25175), 42 states have call predecessors, (25175), 40 states have return successors, (25172), 24124 states have call predecessors, (25172), 25172 states have call successors, (25172) [2022-12-14 06:31:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98438 states to 98438 states and 156582 transitions. [2022-12-14 06:31:03,495 INFO L78 Accepts]: Start accepts. Automaton has 98438 states and 156582 transitions. Word has length 111 [2022-12-14 06:31:03,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:03,495 INFO L495 AbstractCegarLoop]: Abstraction has 98438 states and 156582 transitions. [2022-12-14 06:31:03,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 3.8) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 06:31:03,496 INFO L276 IsEmpty]: Start isEmpty. Operand 98438 states and 156582 transitions. [2022-12-14 06:31:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-14 06:31:03,598 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:03,599 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 06:31:03,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 06:31:03,599 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:31:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash 29607048, now seen corresponding path program 1 times [2022-12-14 06:31:03,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:31:03,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823182738] [2022-12-14 06:31:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:03,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:31:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:03,796 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 06:31:03,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:31:03,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823182738] [2022-12-14 06:31:03,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823182738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:03,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:03,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:31:03,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658512993] [2022-12-14 06:31:03,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:03,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:31:03,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:31:03,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:31:03,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:31:03,798 INFO L87 Difference]: Start difference. First operand 98438 states and 156582 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 06:31:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:10,607 INFO L93 Difference]: Finished difference Result 98550 states and 156728 transitions. [2022-12-14 06:31:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:31:10,608 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 06:31:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:10,883 INFO L225 Difference]: With dead ends: 98550 [2022-12-14 06:31:10,883 INFO L226 Difference]: Without dead ends: 98438 [2022-12-14 06:31:10,913 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 06:31:10,914 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 84 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:10,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 872 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:31:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98438 states. [2022-12-14 06:31:18,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98438 to 98438. [2022-12-14 06:31:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98438 states, 73222 states have (on average 1.45083444866297) internal successors, (106233), 74271 states have internal predecessors, (106233), 25175 states have call successors, (25175), 42 states have call predecessors, (25175), 40 states have return successors, (25172), 24124 states have call predecessors, (25172), 25172 states have call successors, (25172) [2022-12-14 06:31:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98438 states to 98438 states and 156580 transitions. [2022-12-14 06:31:19,292 INFO L78 Accepts]: Start accepts. Automaton has 98438 states and 156580 transitions. Word has length 130 [2022-12-14 06:31:19,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:19,292 INFO L495 AbstractCegarLoop]: Abstraction has 98438 states and 156580 transitions. [2022-12-14 06:31:19,292 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 06:31:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 98438 states and 156580 transitions. [2022-12-14 06:31:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 06:31:19,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:19,389 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 06:31:19,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 06:31:19,389 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:31:19,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:19,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1460377391, now seen corresponding path program 1 times [2022-12-14 06:31:19,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:31:19,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537321943] [2022-12-14 06:31:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:19,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:31:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:19,578 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 06:31:19,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:31:19,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537321943] [2022-12-14 06:31:19,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537321943] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:19,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:19,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:31:19,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968765012] [2022-12-14 06:31:19,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:19,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:31:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:31:19,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:31:19,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:31:19,580 INFO L87 Difference]: Start difference. First operand 98438 states and 156580 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 06:31:27,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:27,500 INFO L93 Difference]: Finished difference Result 98578 states and 156743 transitions. [2022-12-14 06:31:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:31:27,501 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 06:31:27,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:27,795 INFO L225 Difference]: With dead ends: 98578 [2022-12-14 06:31:27,795 INFO L226 Difference]: Without dead ends: 98501 [2022-12-14 06:31:27,822 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 06:31:27,823 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 178 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:27,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 383 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:31:27,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98501 states. [2022-12-14 06:31:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98501 to 98494. [2022-12-14 06:31:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98494 states, 73253 states have (on average 1.4506982649174778) internal successors, (106268), 74304 states have internal predecessors, (106268), 25188 states have call successors, (25188), 53 states have call predecessors, (25188), 52 states have return successors, (25187), 24136 states have call predecessors, (25187), 25185 states have call successors, (25187) [2022-12-14 06:31:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98494 states to 98494 states and 156643 transitions. [2022-12-14 06:31:36,418 INFO L78 Accepts]: Start accepts. Automaton has 98494 states and 156643 transitions. Word has length 135 [2022-12-14 06:31:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:36,419 INFO L495 AbstractCegarLoop]: Abstraction has 98494 states and 156643 transitions. [2022-12-14 06:31:36,419 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 06:31:36,419 INFO L276 IsEmpty]: Start isEmpty. Operand 98494 states and 156643 transitions. [2022-12-14 06:31:36,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-14 06:31:36,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:36,535 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, 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 06:31:36,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 06:31:36,536 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:31:36,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:36,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1360987977, now seen corresponding path program 1 times [2022-12-14 06:31:36,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:31:36,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915313996] [2022-12-14 06:31:36,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:36,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:31:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 06:31:39,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:31:39,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915313996] [2022-12-14 06:31:39,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915313996] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:31:39,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929316685] [2022-12-14 06:31:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:39,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:31:39,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:31:39,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:31:39,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639fa362-1d05-47a7-baaa-dd43f5ac23c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:31:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:39,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 82 conjunts are in the unsatisfiable core [2022-12-14 06:31:39,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 06:31:41,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:31:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 06:31:46,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929316685] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:31:46,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2147327624] [2022-12-14 06:31:46,571 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-12-14 06:31:46,572 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:31:46,572 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:31:46,572 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:31:46,572 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:32:32,294 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 06:32:32,570 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-12-14 06:32:34,816 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 06:32:35,093 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 522 for LOIs [2022-12-14 06:32:44,146 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 244 for LOIs [2022-12-14 06:32:57,376 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 216 for LOIs [2022-12-14 06:32:57,399 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 216 for LOIs [2022-12-14 06:32:57,430 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 216 for LOIs [2022-12-14 06:32:57,459 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 413 for LOIs [2022-12-14 06:32:57,679 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 412 for LOIs [2022-12-14 06:32:57,912 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 472 for LOIs [2022-12-14 06:32:59,449 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 216 for LOIs [2022-12-14 06:32:59,477 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 216 for LOIs [2022-12-14 06:32:59,508 INFO L180 IcfgInterpreter]: Interpretation finished