./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product35.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_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/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_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/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_7f7ea641-3b49-485d-92d8-1dc97bc54284/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 66ba4360d8cd17925c78e04f17940e3bee0e828bd2ae8cc06c9e6a2549687bf9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:35:03,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:35:03,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:35:03,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:35:03,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:35:03,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:35:03,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:35:03,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:35:03,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:35:03,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:35:03,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:35:03,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:35:03,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:35:03,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:35:03,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:35:03,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:35:03,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:35:03,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:35:03,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:35:03,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:35:03,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:35:03,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:35:03,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:35:03,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:35:03,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:35:03,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:35:03,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:35:03,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:35:03,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:35:03,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:35:03,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:35:03,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:35:03,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:35:03,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:35:03,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:35:03,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:35:03,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:35:03,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:35:03,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:35:03,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:35:03,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:35:03,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:35:04,008 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:35:04,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:35:04,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:35:04,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:35:04,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:35:04,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:35:04,010 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:35:04,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:35:04,010 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:35:04,010 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:35:04,010 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:35:04,011 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:35:04,011 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:35:04,011 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:35:04,011 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:35:04,011 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:35:04,012 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:35:04,012 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:35:04,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:35:04,018 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:35:04,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:35:04,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:35:04,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:35:04,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:35:04,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:35:04,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:35:04,019 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:35:04,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:35:04,019 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:35:04,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:35:04,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:35:04,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:35:04,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:35:04,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:35:04,020 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:35:04,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:35:04,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:35:04,020 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:35:04,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:35:04,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:35:04,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:35:04,020 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_7f7ea641-3b49-485d-92d8-1dc97bc54284/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66ba4360d8cd17925c78e04f17940e3bee0e828bd2ae8cc06c9e6a2549687bf9 [2022-12-14 05:35:04,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:35:04,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:35:04,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:35:04,234 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:35:04,234 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:35:04,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec27_product35.cil.c [2022-12-14 05:35:06,738 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:35:06,939 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:35:06,939 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/sv-benchmarks/c/product-lines/email_spec27_product35.cil.c [2022-12-14 05:35:06,952 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/data/c78b9087a/dc9043946b684d2ba67b5d0fbbb00499/FLAG42b5d2e79 [2022-12-14 05:35:06,963 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/data/c78b9087a/dc9043946b684d2ba67b5d0fbbb00499 [2022-12-14 05:35:06,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:35:06,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:35:06,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:35:06,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:35:06,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:35:06,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:35:06" (1/1) ... [2022-12-14 05:35:06,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81821af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:06, skipping insertion in model container [2022-12-14 05:35:06,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:35:06" (1/1) ... [2022-12-14 05:35:06,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:35:07,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:35:07,297 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_7f7ea641-3b49-485d-92d8-1dc97bc54284/sv-benchmarks/c/product-lines/email_spec27_product35.cil.c[40704,40717] [2022-12-14 05:35:07,342 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,347 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,348 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,350 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,359 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,360 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,361 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,383 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,384 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,387 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:35:07,408 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:35:07,464 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_7f7ea641-3b49-485d-92d8-1dc97bc54284/sv-benchmarks/c/product-lines/email_spec27_product35.cil.c[40704,40717] [2022-12-14 05:35:07,473 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,475 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,476 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,477 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,482 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,483 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,484 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,486 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,487 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,489 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:07,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:35:07,521 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:35:07,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07 WrapperNode [2022-12-14 05:35:07,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:35:07,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:35:07,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:35:07,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:35:07,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,596 INFO L138 Inliner]: procedures = 137, calls = 248, calls flagged for inlining = 65, calls inlined = 62, statements flattened = 1140 [2022-12-14 05:35:07,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:35:07,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:35:07,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:35:07,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:35:07,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,644 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:35:07,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:35:07,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:35:07,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:35:07,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (1/1) ... [2022-12-14 05:35:07,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:35:07,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:35:07,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:35:07,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:35:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 05:35:07,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 05:35:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 05:35:07,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 05:35:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 05:35:07,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 05:35:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 05:35:07,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 05:35:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 05:35:07,724 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 05:35:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 05:35:07,724 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 05:35:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 05:35:07,724 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 05:35:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 05:35:07,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 05:35:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 05:35:07,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 05:35:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 05:35:07,725 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 05:35:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 05:35:07,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 05:35:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 05:35:07,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 05:35:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 05:35:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 05:35:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 05:35:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 05:35:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 05:35:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 05:35:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 05:35:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 05:35:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 05:35:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:35:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 05:35:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 05:35:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 05:35:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 05:35:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 05:35:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 05:35:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 05:35:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 05:35:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 05:35:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 05:35:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 05:35:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 05:35:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-14 05:35:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-14 05:35:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 05:35:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 05:35:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 05:35:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 05:35:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 05:35:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 05:35:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 05:35:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 05:35:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 05:35:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 05:35:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:35:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 05:35:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 05:35:07,734 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 05:35:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 05:35:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:35:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:35:07,921 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:35:07,923 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:35:08,569 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:35:08,881 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:35:08,881 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:35:08,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:35:08 BoogieIcfgContainer [2022-12-14 05:35:08,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:35:08,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:35:08,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:35:08,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:35:08,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:35:06" (1/3) ... [2022-12-14 05:35:08,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575f34bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:35:08, skipping insertion in model container [2022-12-14 05:35:08,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:07" (2/3) ... [2022-12-14 05:35:08,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575f34bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:35:08, skipping insertion in model container [2022-12-14 05:35:08,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:35:08" (3/3) ... [2022-12-14 05:35:08,892 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product35.cil.c [2022-12-14 05:35:08,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:35:08,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:35:08,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:35:08,954 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;@2f434187, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:35:08,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:35:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 139 states have (on average 1.2805755395683454) internal successors, (178), 144 states have internal predecessors, (178), 77 states have call successors, (77), 30 states have call predecessors, (77), 30 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-12-14 05:35:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 05:35:08,969 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:08,970 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:35:08,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:35:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1445262037, now seen corresponding path program 1 times [2022-12-14 05:35:08,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:08,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080655243] [2022-12-14 05:35:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 05:35:09,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:09,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080655243] [2022-12-14 05:35:09,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080655243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:35:09,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:35:09,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:35:09,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751148822] [2022-12-14 05:35:09,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:35:09,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:35:09,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:35:09,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:35:09,307 INFO L87 Difference]: Start difference. First operand has 248 states, 139 states have (on average 1.2805755395683454) internal successors, (178), 144 states have internal predecessors, (178), 77 states have call successors, (77), 30 states have call predecessors, (77), 30 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:35:09,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:09,456 INFO L93 Difference]: Finished difference Result 404 states and 535 transitions. [2022-12-14 05:35:09,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:35:09,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 110 [2022-12-14 05:35:09,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:09,469 INFO L225 Difference]: With dead ends: 404 [2022-12-14 05:35:09,469 INFO L226 Difference]: Without dead ends: 245 [2022-12-14 05:35:09,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:35:09,479 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:09,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:35:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-12-14 05:35:09,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-12-14 05:35:09,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 137 states have (on average 1.2554744525547445) internal successors, (172), 141 states have internal predecessors, (172), 77 states have call successors, (77), 30 states have call predecessors, (77), 30 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2022-12-14 05:35:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 325 transitions. [2022-12-14 05:35:09,526 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 325 transitions. Word has length 110 [2022-12-14 05:35:09,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:09,527 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 325 transitions. [2022-12-14 05:35:09,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:35:09,527 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 325 transitions. [2022-12-14 05:35:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 05:35:09,530 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:09,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:35:09,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:35:09,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:35:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1564343266, now seen corresponding path program 1 times [2022-12-14 05:35:09,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:09,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943481095] [2022-12-14 05:35:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:09,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:35:09,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:09,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943481095] [2022-12-14 05:35:09,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943481095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:35:09,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:35:09,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:35:09,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950166850] [2022-12-14 05:35:09,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:35:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:35:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:35:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:35:09,730 INFO L87 Difference]: Start difference. First operand 245 states and 325 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 05:35:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:09,865 INFO L93 Difference]: Finished difference Result 400 states and 520 transitions. [2022-12-14 05:35:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:35:09,866 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 100 [2022-12-14 05:35:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:09,868 INFO L225 Difference]: With dead ends: 400 [2022-12-14 05:35:09,868 INFO L226 Difference]: Without dead ends: 247 [2022-12-14 05:35:09,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:35:09,870 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 0 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:09,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 553 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:35:09,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-12-14 05:35:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-12-14 05:35:09,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 139 states have (on average 1.2517985611510791) internal successors, (174), 143 states have internal predecessors, (174), 77 states have call successors, (77), 30 states have call predecessors, (77), 30 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2022-12-14 05:35:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 327 transitions. [2022-12-14 05:35:09,885 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 327 transitions. Word has length 100 [2022-12-14 05:35:09,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:09,886 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 327 transitions. [2022-12-14 05:35:09,886 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 05:35:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 327 transitions. [2022-12-14 05:35:09,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 05:35:09,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:09,888 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:35:09,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:35:09,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:35:09,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1745606420, now seen corresponding path program 1 times [2022-12-14 05:35:09,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:09,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210147230] [2022-12-14 05:35:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 05:35:10,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:10,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210147230] [2022-12-14 05:35:10,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210147230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:35:10,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:35:10,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:35:10,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095419342] [2022-12-14 05:35:10,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:35:10,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:35:10,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:10,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:35:10,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:35:10,023 INFO L87 Difference]: Start difference. First operand 247 states and 327 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:35:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:10,151 INFO L93 Difference]: Finished difference Result 529 states and 721 transitions. [2022-12-14 05:35:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:35:10,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 116 [2022-12-14 05:35:10,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:10,153 INFO L225 Difference]: With dead ends: 529 [2022-12-14 05:35:10,153 INFO L226 Difference]: Without dead ends: 300 [2022-12-14 05:35:10,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:35:10,155 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 59 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:10,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 573 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:35:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-12-14 05:35:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 295. [2022-12-14 05:35:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 173 states have (on average 1.323699421965318) internal successors, (229), 177 states have internal predecessors, (229), 91 states have call successors, (91), 30 states have call predecessors, (91), 30 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2022-12-14 05:35:10,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 410 transitions. [2022-12-14 05:35:10,171 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 410 transitions. Word has length 116 [2022-12-14 05:35:10,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:10,171 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 410 transitions. [2022-12-14 05:35:10,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:35:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 410 transitions. [2022-12-14 05:35:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 05:35:10,173 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:10,173 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:35:10,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:35:10,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:35:10,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:10,174 INFO L85 PathProgramCache]: Analyzing trace with hash 540749960, now seen corresponding path program 1 times [2022-12-14 05:35:10,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:10,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121956544] [2022-12-14 05:35:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:10,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 05:35:10,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:35:10,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121956544] [2022-12-14 05:35:10,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121956544] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:35:10,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547093512] [2022-12-14 05:35:10,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:10,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:10,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:35:10,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:35:10,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:35:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:35:10,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:35:10,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:35:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 05:35:10,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:35:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 05:35:10,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547093512] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:35:10,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1830409310] [2022-12-14 05:35:10,792 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-12-14 05:35:10,792 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:35:10,796 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:35:10,801 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:35:10,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:35:38,826 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 05:35:39,113 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 05:35:40,869 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:35:41,249 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-12-14 05:35:43,978 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 05:35:44,015 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 229 for LOIs [2022-12-14 05:35:44,070 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 237 for LOIs [2022-12-14 05:35:44,105 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-12-14 05:35:44,151 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:36:27,959 WARN L233 SmtUtils]: Spent 10.77s 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 05:36:51,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1830409310] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:36:51,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:36:51,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [4, 4, 4] total 46 [2022-12-14 05:36:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063569253] [2022-12-14 05:36:51,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:36:51,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 05:36:51,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:36:51,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 05:36:51,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1951, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 05:36:51,861 INFO L87 Difference]: Start difference. First operand 295 states and 410 transitions. Second operand has 41 states, 27 states have (on average 2.111111111111111) internal successors, (57), 25 states have internal predecessors, (57), 13 states have call successors, (26), 9 states have call predecessors, (26), 7 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) [2022-12-14 05:37:00,146 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 487 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:37:18,081 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 562 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:37:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:37:42,646 INFO L93 Difference]: Finished difference Result 720 states and 1067 transitions. [2022-12-14 05:37:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 05:37:42,647 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 2.111111111111111) internal successors, (57), 25 states have internal predecessors, (57), 13 states have call successors, (26), 9 states have call predecessors, (26), 7 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) Word has length 117 [2022-12-14 05:37:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:37:42,649 INFO L225 Difference]: With dead ends: 720 [2022-12-14 05:37:42,649 INFO L226 Difference]: Without dead ends: 443 [2022-12-14 05:37:42,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 94.9s TimeCoverageRelationStatistics Valid=171, Invalid=2691, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 05:37:42,651 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 217 mSDsluCounter, 6577 mSDsCounter, 0 mSdLazyCounter, 7506 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 6898 SdHoareTripleChecker+Invalid, 7532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 7506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:37:42,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 6898 Invalid, 7532 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [26 Valid, 7506 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time] [2022-12-14 05:37:42,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-12-14 05:37:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 341. [2022-12-14 05:37:42,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 208 states have (on average 1.3269230769230769) internal successors, (276), 212 states have internal predecessors, (276), 97 states have call successors, (97), 37 states have call predecessors, (97), 35 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-12-14 05:37:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 469 transitions. [2022-12-14 05:37:42,748 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 469 transitions. Word has length 117 [2022-12-14 05:37:42,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:37:42,749 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 469 transitions. [2022-12-14 05:37:42,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 2.111111111111111) internal successors, (57), 25 states have internal predecessors, (57), 13 states have call successors, (26), 9 states have call predecessors, (26), 7 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) [2022-12-14 05:37:42,749 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 469 transitions. [2022-12-14 05:37:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 05:37:42,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:37:42,751 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:37:42,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:37:42,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:37:42,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:37:42,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:37:42,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1626816186, now seen corresponding path program 1 times [2022-12-14 05:37:42,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:37:42,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694672955] [2022-12-14 05:37:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:42,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:37:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:37:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 05:37:43,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:37:43,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694672955] [2022-12-14 05:37:43,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694672955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:37:43,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:37:43,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:37:43,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182268357] [2022-12-14 05:37:43,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:37:43,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:37:43,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:37:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:37:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:37:43,042 INFO L87 Difference]: Start difference. First operand 341 states and 469 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 05:37:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:37:43,347 INFO L93 Difference]: Finished difference Result 760 states and 1090 transitions. [2022-12-14 05:37:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:37:43,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 122 [2022-12-14 05:37:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:37:43,349 INFO L225 Difference]: With dead ends: 760 [2022-12-14 05:37:43,349 INFO L226 Difference]: Without dead ends: 466 [2022-12-14 05:37:43,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:37:43,350 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 57 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:37:43,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 583 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:37:43,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-12-14 05:37:43,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 461. [2022-12-14 05:37:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 297 states have (on average 1.393939393939394) internal successors, (414), 301 states have internal predecessors, (414), 128 states have call successors, (128), 37 states have call predecessors, (128), 35 states have return successors, (127), 124 states have call predecessors, (127), 127 states have call successors, (127) [2022-12-14 05:37:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 669 transitions. [2022-12-14 05:37:43,495 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 669 transitions. Word has length 122 [2022-12-14 05:37:43,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:37:43,496 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 669 transitions. [2022-12-14 05:37:43,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 05:37:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 669 transitions. [2022-12-14 05:37:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-14 05:37:43,498 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:37:43,498 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:37:43,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:37:43,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:37:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:37:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1797113853, now seen corresponding path program 1 times [2022-12-14 05:37:43,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:37:43,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222049558] [2022-12-14 05:37:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:43,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:37:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:37:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:37:43,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:37:43,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222049558] [2022-12-14 05:37:43,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222049558] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:37:43,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805778787] [2022-12-14 05:37:43,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:43,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:37:43,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:37:43,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:37:43,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:37:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:37:43,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:37:43,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:37:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:37:43,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:37:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:37:43,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805778787] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:37:43,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1977065064] [2022-12-14 05:37:43,942 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2022-12-14 05:37:43,942 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:37:43,943 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:37:43,943 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:37:43,943 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:38:17,119 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 05:38:17,404 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 05:38:19,161 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 05:38:19,201 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:38:19,484 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 267 for LOIs [2022-12-14 05:38:22,120 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-12-14 05:38:33,763 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-12-14 05:38:34,399 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-12-14 05:38:34,439 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-12-14 05:38:34,998 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-12-14 05:38:35,065 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-12-14 05:38:35,640 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-12-14 05:38:40,085 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2022-12-14 05:38:40,125 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-12-14 05:38:40,170 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:39:25,908 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 555 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:40:59,281 WARN L233 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 586 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:41:05,237 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 583 DAG size of output: 436 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:41:23,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1977065064] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:41:23,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:41:23,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [4, 4, 4] total 78 [2022-12-14 05:41:23,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318881540] [2022-12-14 05:41:23,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:41:23,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-12-14 05:41:23,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:41:23,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-12-14 05:41:23,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=5749, Unknown=0, NotChecked=0, Total=6006 [2022-12-14 05:41:23,860 INFO L87 Difference]: Start difference. First operand 461 states and 669 transitions. Second operand has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 44 states have internal predecessors, (54), 22 states have call successors, (23), 15 states have call predecessors, (23), 12 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 05:42:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:45,562 INFO L93 Difference]: Finished difference Result 803 states and 1149 transitions. [2022-12-14 05:42:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-14 05:42:45,563 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 44 states have internal predecessors, (54), 22 states have call successors, (23), 15 states have call predecessors, (23), 12 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 106 [2022-12-14 05:42:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:45,569 INFO L225 Difference]: With dead ends: 803 [2022-12-14 05:42:45,569 INFO L226 Difference]: Without dead ends: 657 [2022-12-14 05:42:45,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 241 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 201.8s TimeCoverageRelationStatistics Valid=375, Invalid=8367, Unknown=0, NotChecked=0, Total=8742 [2022-12-14 05:42:45,571 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 417 mSDsluCounter, 9520 mSDsCounter, 0 mSdLazyCounter, 14483 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 9852 SdHoareTripleChecker+Invalid, 14529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 14483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:45,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 9852 Invalid, 14529 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [46 Valid, 14483 Invalid, 0 Unknown, 0 Unchecked, 42.7s Time] [2022-12-14 05:42:45,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-12-14 05:42:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 548. [2022-12-14 05:42:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 351 states have (on average 1.3703703703703705) internal successors, (481), 357 states have internal predecessors, (481), 152 states have call successors, (152), 48 states have call predecessors, (152), 44 states have return successors, (152), 144 states have call predecessors, (152), 151 states have call successors, (152) [2022-12-14 05:42:45,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 785 transitions. [2022-12-14 05:42:45,796 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 785 transitions. Word has length 106 [2022-12-14 05:42:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:42:45,797 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 785 transitions. [2022-12-14 05:42:45,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 44 states have internal predecessors, (54), 22 states have call successors, (23), 15 states have call predecessors, (23), 12 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 05:42:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 785 transitions. [2022-12-14 05:42:45,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 05:42:45,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:45,799 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:45,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 05:42:45,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:42:46,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:46,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:46,002 INFO L85 PathProgramCache]: Analyzing trace with hash -406563486, now seen corresponding path program 1 times [2022-12-14 05:42:46,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:42:46,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171128642] [2022-12-14 05:42:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:46,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:42:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 05:42:46,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:42:46,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171128642] [2022-12-14 05:42:46,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171128642] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:42:46,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338754963] [2022-12-14 05:42:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:46,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:42:46,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:42:46,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:42:46,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:42:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:46,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:42:46,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:42:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 05:42:46,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:42:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 05:42:46,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338754963] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:42:46,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1434799925] [2022-12-14 05:42:46,515 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-12-14 05:42:46,516 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:42:46,516 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:42:46,516 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:42:46,516 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:21,862 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 05:43:22,146 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 05:43:24,059 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 05:43:24,096 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:43:24,378 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 267 for LOIs [2022-12-14 05:43:26,996 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-12-14 05:43:44,642 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 429 for LOIs [2022-12-14 05:43:46,492 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-12-14 05:43:47,058 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-12-14 05:43:47,128 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-12-14 05:43:47,745 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-12-14 05:43:50,797 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-12-14 05:43:50,837 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2022-12-14 05:43:50,878 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-12-14 05:43:50,923 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:45:55,059 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 556 DAG size of output: 397 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:46:31,088 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 648 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:46:31,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1434799925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:31,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:46:31,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [4, 4, 4] total 80 [2022-12-14 05:46:31,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275929579] [2022-12-14 05:46:31,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:31,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-14 05:46:31,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:31,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-14 05:46:31,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=6066, Unknown=0, NotChecked=0, Total=6320 [2022-12-14 05:46:31,094 INFO L87 Difference]: Start difference. First operand 548 states and 785 transitions. Second operand has 75 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 45 states have internal predecessors, (56), 23 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-14 05:48:14,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:48:14,240 INFO L93 Difference]: Finished difference Result 837 states and 1192 transitions. [2022-12-14 05:48:14,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-12-14 05:48:14,241 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 45 states have internal predecessors, (56), 23 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) Word has length 111 [2022-12-14 05:48:14,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:48:14,243 INFO L225 Difference]: With dead ends: 837 [2022-12-14 05:48:14,243 INFO L226 Difference]: Without dead ends: 659 [2022-12-14 05:48:14,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2422 ImplicationChecksByTransitivity, 220.7s TimeCoverageRelationStatistics Valid=450, Invalid=9852, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 05:48:14,246 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 412 mSDsluCounter, 9334 mSDsCounter, 0 mSdLazyCounter, 13910 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 9664 SdHoareTripleChecker+Invalid, 13969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 13910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2022-12-14 05:48:14,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 9664 Invalid, 13969 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [59 Valid, 13910 Invalid, 0 Unknown, 0 Unchecked, 41.6s Time] [2022-12-14 05:48:14,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-12-14 05:48:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 541. [2022-12-14 05:48:14,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 346 states have (on average 1.3670520231213872) internal successors, (473), 352 states have internal predecessors, (473), 149 states have call successors, (149), 49 states have call predecessors, (149), 45 states have return successors, (149), 141 states have call predecessors, (149), 148 states have call successors, (149) [2022-12-14 05:48:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 771 transitions. [2022-12-14 05:48:14,496 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 771 transitions. Word has length 111 [2022-12-14 05:48:14,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:48:14,496 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 771 transitions. [2022-12-14 05:48:14,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 45 states have internal predecessors, (56), 23 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-14 05:48:14,497 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 771 transitions. [2022-12-14 05:48:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 05:48:14,498 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:48:14,499 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:48:14,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:48:14,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:48:14,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:48:14,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:48:14,700 INFO L85 PathProgramCache]: Analyzing trace with hash 321653009, now seen corresponding path program 1 times [2022-12-14 05:48:14,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:48:14,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392223278] [2022-12-14 05:48:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:48:14,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:48:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:48:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:48:14,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:48:14,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392223278] [2022-12-14 05:48:14,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392223278] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:48:14,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840517942] [2022-12-14 05:48:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:48:14,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:48:14,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:48:14,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:48:14,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f7ea641-3b49-485d-92d8-1dc97bc54284/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:48:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:48:15,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:48:15,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:48:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:48:15,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:48:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:48:15,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840517942] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:48:15,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1704358916] [2022-12-14 05:48:15,080 INFO L159 IcfgInterpreter]: Started Sifa with 94 locations of interest [2022-12-14 05:48:15,080 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:48:15,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:48:15,080 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:48:15,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:48:46,956 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 05:48:47,234 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 05:48:48,954 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 05:48:48,993 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:48:49,274 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-12-14 05:48:51,902 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-12-14 05:49:13,997 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-12-14 05:49:14,633 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-12-14 05:49:14,673 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-12-14 05:49:15,232 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-12-14 05:49:15,303 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-12-14 05:49:15,877 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs