./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/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_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/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_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/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 ac03fde86830071a4c6b2e5721972db0abe9813dd0e80632e775695a294f996c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:22:19,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:22:19,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:22:19,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:22:19,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:22:19,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:22:19,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:22:19,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:22:19,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:22:19,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:22:19,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:22:19,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:22:19,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:22:19,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:22:19,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:22:19,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:22:19,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:22:19,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:22:19,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:22:19,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:22:19,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:22:19,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:22:19,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:22:19,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:22:19,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:22:19,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:22:19,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:22:19,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:22:19,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:22:19,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:22:19,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:22:19,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:22:19,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:22:19,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:22:19,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:22:19,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:22:19,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:22:19,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:22:19,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:22:19,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:22:19,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:22:19,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:22:19,733 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:22:19,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:22:19,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:22:19,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:22:19,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:22:19,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:22:19,734 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:22:19,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:22:19,735 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:22:19,735 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:22:19,735 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:22:19,735 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:22:19,735 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:22:19,735 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:22:19,736 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:22:19,736 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:22:19,736 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:22:19,736 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:22:19,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:22:19,737 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:22:19,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:22:19,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:22:19,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:22:19,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:22:19,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:22:19,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:22:19,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:22:19,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:22:19,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:22:19,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:22:19,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:22:19,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:22:19,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:22:19,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:22:19,739 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:22:19,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:22:19,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:22:19,740 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:22:19,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:22:19,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:22:19,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:22:19,740 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_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac03fde86830071a4c6b2e5721972db0abe9813dd0e80632e775695a294f996c [2022-12-14 07:22:19,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:22:19,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:22:19,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:22:19,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:22:19,952 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:22:19,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c [2022-12-14 07:22:22,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:22:22,778 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:22:22,778 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c [2022-12-14 07:22:22,793 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/data/9bd7a0213/4141dd53d76f4302bb86ef695ad6fd3c/FLAG26f94fce5 [2022-12-14 07:22:22,805 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/data/9bd7a0213/4141dd53d76f4302bb86ef695ad6fd3c [2022-12-14 07:22:22,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:22:22,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:22:22,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:22:22,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:22:22,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:22:22,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:22:22" (1/1) ... [2022-12-14 07:22:22,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40551ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:22, skipping insertion in model container [2022-12-14 07:22:22,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:22:22" (1/1) ... [2022-12-14 07:22:22,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:22:22,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:22:23,114 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,123 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,124 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,127 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,145 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,147 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,160 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_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c[14691,14704] [2022-12-14 07:22:23,253 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,255 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,259 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:22:23,399 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:22:23,417 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,419 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,420 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,421 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,427 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,428 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,431 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_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c[14691,14704] [2022-12-14 07:22:23,444 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,446 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,448 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:22:23,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:22:23,516 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:22:23,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23 WrapperNode [2022-12-14 07:22:23,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:22:23,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:22:23,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:22:23,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:22:23,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,589 INFO L138 Inliner]: procedures = 133, calls = 225, calls flagged for inlining = 65, calls inlined = 62, statements flattened = 1120 [2022-12-14 07:22:23,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:22:23,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:22:23,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:22:23,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:22:23,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,638 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:22:23,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:22:23,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:22:23,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:22:23,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (1/1) ... [2022-12-14 07:22:23,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:22:23,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:22:23,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:22:23,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:22:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 07:22:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 07:22:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 07:22:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 07:22:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 07:22:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 07:22:23,711 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 07:22:23,711 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 07:22:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 07:22:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 07:22:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 07:22:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 07:22:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 07:22:23,712 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 07:22:23,712 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 07:22:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 07:22:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 07:22:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 07:22:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 07:22:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 07:22:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 07:22:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 07:22:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 07:22:23,713 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 07:22:23,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 07:22:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:22:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 07:22:23,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 07:22:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 07:22:23,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 07:22:23,714 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 07:22:23,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 07:22:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 07:22:23,715 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 07:22:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 07:22:23,715 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 07:22:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 07:22:23,715 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 07:22:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 07:22:23,715 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 07:22:23,715 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 07:22:23,715 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 07:22:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:22:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 07:22:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 07:22:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 07:22:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 07:22:23,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:22:23,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:22:23,880 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:22:23,882 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:22:24,551 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:22:25,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:22:25,035 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:22:25,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:22:25 BoogieIcfgContainer [2022-12-14 07:22:25,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:22:25,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:22:25,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:22:25,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:22:25,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:22:22" (1/3) ... [2022-12-14 07:22:25,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb7bbfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:22:25, skipping insertion in model container [2022-12-14 07:22:25,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:22:23" (2/3) ... [2022-12-14 07:22:25,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb7bbfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:22:25, skipping insertion in model container [2022-12-14 07:22:25,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:22:25" (3/3) ... [2022-12-14 07:22:25,046 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product27.cil.c [2022-12-14 07:22:25,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:22:25,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:22:25,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:22:25,125 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;@de310ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:22:25,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:22:25,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 109 states have (on average 1.311926605504587) internal successors, (143), 112 states have internal predecessors, (143), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-12-14 07:22:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 07:22:25,140 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:25,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:22:25,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:25,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:25,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1706038136, now seen corresponding path program 1 times [2022-12-14 07:22:25,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:25,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421274960] [2022-12-14 07:22:25,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:25,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:22:25,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:25,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421274960] [2022-12-14 07:22:25,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421274960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:25,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:22:25,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:22:25,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141068660] [2022-12-14 07:22:25,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:25,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:22:25,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:22:25,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:22:25,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:22:25,410 INFO L87 Difference]: Start difference. First operand has 191 states, 109 states have (on average 1.311926605504587) internal successors, (143), 112 states have internal predecessors, (143), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:22:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:25,540 INFO L93 Difference]: Finished difference Result 290 states and 389 transitions. [2022-12-14 07:22:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:22:25,542 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2022-12-14 07:22:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:25,554 INFO L225 Difference]: With dead ends: 290 [2022-12-14 07:22:25,555 INFO L226 Difference]: Without dead ends: 188 [2022-12-14 07:22:25,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:22:25,564 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:25,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:22:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-12-14 07:22:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-12-14 07:22:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 107 states have (on average 1.280373831775701) internal successors, (137), 109 states have internal predecessors, (137), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-12-14 07:22:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 252 transitions. [2022-12-14 07:22:25,620 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 252 transitions. Word has length 60 [2022-12-14 07:22:25,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:25,622 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 252 transitions. [2022-12-14 07:22:25,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:22:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 252 transitions. [2022-12-14 07:22:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 07:22:25,626 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:25,626 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:22:25,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:22:25,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1757738962, now seen corresponding path program 1 times [2022-12-14 07:22:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:25,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008473074] [2022-12-14 07:22:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:22:25,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:25,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008473074] [2022-12-14 07:22:25,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008473074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:25,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:22:25,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:22:25,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763970223] [2022-12-14 07:22:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:25,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:22:25,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:22:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:22:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:22:25,808 INFO L87 Difference]: Start difference. First operand 188 states and 252 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:22:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:25,925 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2022-12-14 07:22:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:22:25,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-12-14 07:22:25,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:25,927 INFO L225 Difference]: With dead ends: 286 [2022-12-14 07:22:25,927 INFO L226 Difference]: Without dead ends: 190 [2022-12-14 07:22:25,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:22:25,928 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:25,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:22:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-12-14 07:22:25,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-12-14 07:22:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 109 states have (on average 1.275229357798165) internal successors, (139), 111 states have internal predecessors, (139), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-12-14 07:22:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 254 transitions. [2022-12-14 07:22:25,940 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 254 transitions. Word has length 61 [2022-12-14 07:22:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:25,940 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 254 transitions. [2022-12-14 07:22:25,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:22:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 254 transitions. [2022-12-14 07:22:25,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 07:22:25,942 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:25,942 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:22:25,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:22:25,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:25,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1872792136, now seen corresponding path program 1 times [2022-12-14 07:22:25,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:25,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974494814] [2022-12-14 07:22:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:25,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:22:26,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:26,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974494814] [2022-12-14 07:22:26,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974494814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:22:26,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:22:26,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:22:26,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779211804] [2022-12-14 07:22:26,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:22:26,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:22:26,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:22:26,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:22:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:22:26,007 INFO L87 Difference]: Start difference. First operand 190 states and 254 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:22:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:22:26,107 INFO L93 Difference]: Finished difference Result 415 states and 575 transitions. [2022-12-14 07:22:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:22:26,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-12-14 07:22:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:22:26,109 INFO L225 Difference]: With dead ends: 415 [2022-12-14 07:22:26,109 INFO L226 Difference]: Without dead ends: 243 [2022-12-14 07:22:26,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:22:26,110 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 59 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:22:26,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 438 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:22:26,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-12-14 07:22:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 238. [2022-12-14 07:22:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 143 states have (on average 1.3566433566433567) internal successors, (194), 145 states have internal predecessors, (194), 72 states have call successors, (72), 22 states have call predecessors, (72), 22 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-12-14 07:22:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 337 transitions. [2022-12-14 07:22:26,124 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 337 transitions. Word has length 66 [2022-12-14 07:22:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:22:26,124 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 337 transitions. [2022-12-14 07:22:26,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 07:22:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 337 transitions. [2022-12-14 07:22:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 07:22:26,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:22:26,126 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:22:26,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:22:26,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:22:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:22:26,136 INFO L85 PathProgramCache]: Analyzing trace with hash -316930148, now seen corresponding path program 1 times [2022-12-14 07:22:26,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:22:26,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078919459] [2022-12-14 07:22:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:22:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:22:26,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:22:26,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078919459] [2022-12-14 07:22:26,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078919459] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:22:26,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160823651] [2022-12-14 07:22:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:22:26,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:22:26,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:22:26,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:22:26,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:22:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:22:26,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:22:26,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:22:26,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:22:26,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:22:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:22:26,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160823651] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:22:26,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1902627593] [2022-12-14 07:22:26,632 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-12-14 07:22:26,632 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:22:26,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:22:26,639 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:22:26,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:22:56,148 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:22:56,634 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 07:22:56,941 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 257 for LOIs [2022-12-14 07:22:59,279 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-12-14 07:22:59,318 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-12-14 07:23:02,967 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 267 for LOIs [2022-12-14 07:23:05,960 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 249 for LOIs [2022-12-14 07:23:05,995 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 249 for LOIs [2022-12-14 07:23:06,037 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-12-14 07:23:11,027 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 240 for LOIs [2022-12-14 07:23:11,069 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:24:37,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1902627593] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:24:37,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:24:37,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-12-14 07:24:37,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164738254] [2022-12-14 07:24:37,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:24:37,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 07:24:37,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:24:37,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 07:24:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2715, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 07:24:37,594 INFO L87 Difference]: Start difference. First operand 238 states and 337 transitions. Second operand has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 07:25:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:13,624 INFO L93 Difference]: Finished difference Result 636 states and 969 transitions. [2022-12-14 07:25:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-14 07:25:13,624 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 67 [2022-12-14 07:25:13,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:13,629 INFO L225 Difference]: With dead ends: 636 [2022-12-14 07:25:13,629 INFO L226 Difference]: Without dead ends: 416 [2022-12-14 07:25:13,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 101.7s TimeCoverageRelationStatistics Valid=202, Invalid=3580, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 07:25:13,633 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 271 mSDsluCounter, 5291 mSDsCounter, 0 mSdLazyCounter, 7380 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 5550 SdHoareTripleChecker+Invalid, 7419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 7380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:13,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 5550 Invalid, 7419 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [39 Valid, 7380 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2022-12-14 07:25:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-12-14 07:25:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 310. [2022-12-14 07:25:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 196 states have (on average 1.3520408163265305) internal successors, (265), 199 states have internal predecessors, (265), 84 states have call successors, (84), 31 states have call predecessors, (84), 29 states have return successors, (84), 79 states have call predecessors, (84), 83 states have call successors, (84) [2022-12-14 07:25:13,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 433 transitions. [2022-12-14 07:25:13,905 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 433 transitions. Word has length 67 [2022-12-14 07:25:13,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:13,905 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 433 transitions. [2022-12-14 07:25:13,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 07:25:13,906 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 433 transitions. [2022-12-14 07:25:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 07:25:13,908 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:13,908 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:25:13,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:25:14,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-14 07:25:14,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:14,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:14,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1503419451, now seen corresponding path program 1 times [2022-12-14 07:25:14,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:14,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879749499] [2022-12-14 07:25:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:14,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:25:14,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:14,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879749499] [2022-12-14 07:25:14,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879749499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:25:14,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:25:14,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:25:14,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119397011] [2022-12-14 07:25:14,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:25:14,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:25:14,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:25:14,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:25:14,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:14,181 INFO L87 Difference]: Start difference. First operand 310 states and 433 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:25:14,475 INFO L93 Difference]: Finished difference Result 722 states and 1046 transitions. [2022-12-14 07:25:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:25:14,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-12-14 07:25:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:25:14,478 INFO L225 Difference]: With dead ends: 722 [2022-12-14 07:25:14,478 INFO L226 Difference]: Without dead ends: 438 [2022-12-14 07:25:14,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:25:14,480 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 57 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:25:14,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 450 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:25:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-12-14 07:25:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 431. [2022-12-14 07:25:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 286 states have (on average 1.416083916083916) internal successors, (405), 289 states have internal predecessors, (405), 115 states have call successors, (115), 31 states have call predecessors, (115), 29 states have return successors, (115), 110 states have call predecessors, (115), 114 states have call successors, (115) [2022-12-14 07:25:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 635 transitions. [2022-12-14 07:25:14,660 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 635 transitions. Word has length 72 [2022-12-14 07:25:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:25:14,661 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 635 transitions. [2022-12-14 07:25:14,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 07:25:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 635 transitions. [2022-12-14 07:25:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 07:25:14,663 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:25:14,663 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:25:14,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:25:14,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:25:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:25:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash 939491334, now seen corresponding path program 1 times [2022-12-14 07:25:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:25:14,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384940842] [2022-12-14 07:25:14,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:14,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:25:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:14,804 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 07:25:14,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:25:14,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384940842] [2022-12-14 07:25:14,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384940842] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:25:14,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842552138] [2022-12-14 07:25:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:25:14,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:25:14,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:25:14,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:25:14,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:25:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:25:15,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:25:15,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:25:15,019 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 07:25:15,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:25:15,055 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 07:25:15,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842552138] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:25:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [419553316] [2022-12-14 07:25:15,059 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-12-14 07:25:15,059 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:25:15,060 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:25:15,060 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:25:15,060 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:25:57,953 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 07:25:58,258 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-12-14 07:25:58,563 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:26:42,384 WARN L233 SmtUtils]: Spent 10.60s on a formula simplification. DAG size of input: 583 DAG size of output: 446 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:26:55,267 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 581 DAG size of output: 435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:27:03,554 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 584 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:27:03,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [419553316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:27:03,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:27:03,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 07:27:03,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409848471] [2022-12-14 07:27:03,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:27:03,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 07:27:03,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:27:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 07:27:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-12-14 07:27:03,708 INFO L87 Difference]: Start difference. First operand 431 states and 635 transitions. Second operand has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-12-14 07:27:11,058 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 540 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:27:25,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:27:25,781 INFO L93 Difference]: Finished difference Result 836 states and 1271 transitions. [2022-12-14 07:27:25,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 07:27:25,782 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 73 [2022-12-14 07:27:25,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:27:25,785 INFO L225 Difference]: With dead ends: 836 [2022-12-14 07:27:25,785 INFO L226 Difference]: Without dead ends: 516 [2022-12-14 07:27:25,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 80.3s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 07:27:25,787 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 235 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:27:25,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 3022 Invalid, 1942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-12-14 07:27:25,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-12-14 07:27:26,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 461. [2022-12-14 07:27:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 314 states have (on average 1.4203821656050954) internal successors, (446), 317 states have internal predecessors, (446), 116 states have call successors, (116), 32 states have call predecessors, (116), 30 states have return successors, (116), 111 states have call predecessors, (116), 115 states have call successors, (116) [2022-12-14 07:27:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 678 transitions. [2022-12-14 07:27:26,052 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 678 transitions. Word has length 73 [2022-12-14 07:27:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:27:26,053 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 678 transitions. [2022-12-14 07:27:26,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-12-14 07:27:26,053 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 678 transitions. [2022-12-14 07:27:26,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 07:27:26,054 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:27:26,054 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:27:26,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 07:27:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 07:27:26,256 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:27:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:27:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash 251613291, now seen corresponding path program 1 times [2022-12-14 07:27:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:27:26,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047181635] [2022-12-14 07:27:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:27:26,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:27:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:27:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:27:26,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:27:26,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047181635] [2022-12-14 07:27:26,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047181635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:27:26,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665783632] [2022-12-14 07:27:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:27:26,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:27:26,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:27:26,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:27:26,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:27:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:27:26,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:27:26,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:27:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:27:26,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:27:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:27:26,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665783632] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:27:26,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [341490504] [2022-12-14 07:27:26,680 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-12-14 07:27:26,681 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:27:26,681 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:27:26,681 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:27:26,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:29:26,508 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:29:26,811 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2022-12-14 07:29:27,128 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2022-12-14 07:29:27,473 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-12-14 07:29:27,538 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 07:29:27,843 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:30:34,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [341490504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:30:34,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:30:34,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 07:30:34,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595713138] [2022-12-14 07:30:34,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:30:34,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 07:30:34,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:30:34,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 07:30:34,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 07:30:34,135 INFO L87 Difference]: Start difference. First operand 461 states and 678 transitions. Second operand has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-12-14 07:30:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:30:50,334 INFO L93 Difference]: Finished difference Result 882 states and 1340 transitions. [2022-12-14 07:30:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 07:30:50,335 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 76 [2022-12-14 07:30:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:30:50,337 INFO L225 Difference]: With dead ends: 882 [2022-12-14 07:30:50,337 INFO L226 Difference]: Without dead ends: 562 [2022-12-14 07:30:50,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 72.0s TimeCoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 07:30:50,339 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 125 mSDsluCounter, 3227 mSDsCounter, 0 mSdLazyCounter, 3259 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 3269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:30:50,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 3448 Invalid, 3269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3259 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-12-14 07:30:50,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-12-14 07:30:50,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 499. [2022-12-14 07:30:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 346 states have (on average 1.4190751445086704) internal successors, (491), 349 states have internal predecessors, (491), 119 states have call successors, (119), 35 states have call predecessors, (119), 33 states have return successors, (119), 114 states have call predecessors, (119), 118 states have call successors, (119) [2022-12-14 07:30:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 729 transitions. [2022-12-14 07:30:50,616 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 729 transitions. Word has length 76 [2022-12-14 07:30:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:30:50,616 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 729 transitions. [2022-12-14 07:30:50,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-12-14 07:30:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 729 transitions. [2022-12-14 07:30:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 07:30:50,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:30:50,618 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:30:50,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 07:30:50,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:30:50,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:30:50,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:30:50,820 INFO L85 PathProgramCache]: Analyzing trace with hash 846943078, now seen corresponding path program 1 times [2022-12-14 07:30:50,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:30:50,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255365589] [2022-12-14 07:30:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:30:50,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:30:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:30:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:30:50,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:30:50,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255365589] [2022-12-14 07:30:50,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255365589] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:30:50,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336209173] [2022-12-14 07:30:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:30:50,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:30:50,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:30:50,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:30:50,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:30:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:30:51,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:30:51,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:30:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:30:51,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:30:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:30:51,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336209173] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:30:51,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1060716568] [2022-12-14 07:30:51,214 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-12-14 07:30:51,214 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:30:51,214 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:30:51,215 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:30:51,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:31:28,408 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:31:28,712 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 07:31:29,013 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-12-14 07:31:30,662 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 07:31:30,702 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-12-14 07:31:34,107 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 269 for LOIs [2022-12-14 07:31:37,076 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-12-14 07:31:37,111 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-12-14 07:31:37,154 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-12-14 07:31:42,125 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 262 for LOIs [2022-12-14 07:31:42,177 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:32:25,513 WARN L233 SmtUtils]: Spent 12.02s on a formula simplification. DAG size of input: 608 DAG size of output: 478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:32:32,697 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 610 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:33:02,445 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 477 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:33:36,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1060716568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:33:36,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:33:36,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [4, 4, 4] total 62 [2022-12-14 07:33:36,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460227081] [2022-12-14 07:33:36,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:33:36,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-14 07:33:36,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:33:36,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-14 07:33:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=3603, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 07:33:36,364 INFO L87 Difference]: Start difference. First operand 499 states and 729 transitions. Second operand has 57 states, 40 states have (on average 1.05) internal successors, (42), 37 states have internal predecessors, (42), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 07:33:44,023 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 583 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:34:18,879 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 604 DAG size of output: 423 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:34:25,252 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 606 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:34:31,720 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 611 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:34:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:34:56,580 INFO L93 Difference]: Finished difference Result 994 states and 1485 transitions. [2022-12-14 07:34:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-14 07:34:56,581 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 40 states have (on average 1.05) internal successors, (42), 37 states have internal predecessors, (42), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 75 [2022-12-14 07:34:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:34:56,584 INFO L225 Difference]: With dead ends: 994 [2022-12-14 07:34:56,584 INFO L226 Difference]: Without dead ends: 674 [2022-12-14 07:34:56,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 165.8s TimeCoverageRelationStatistics Valid=447, Invalid=5873, Unknown=0, NotChecked=0, Total=6320 [2022-12-14 07:34:56,588 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 278 mSDsluCounter, 6497 mSDsCounter, 0 mSdLazyCounter, 8878 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 6750 SdHoareTripleChecker+Invalid, 8910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 8878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:34:56,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 6750 Invalid, 8910 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [32 Valid, 8878 Invalid, 0 Unknown, 0 Unchecked, 27.6s Time] [2022-12-14 07:34:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-12-14 07:34:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 519. [2022-12-14 07:34:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 366 states have (on average 1.4262295081967213) internal successors, (522), 369 states have internal predecessors, (522), 119 states have call successors, (119), 35 states have call predecessors, (119), 33 states have return successors, (119), 114 states have call predecessors, (119), 118 states have call successors, (119) [2022-12-14 07:34:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 760 transitions. [2022-12-14 07:34:57,119 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 760 transitions. Word has length 75 [2022-12-14 07:34:57,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:34:57,119 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 760 transitions. [2022-12-14 07:34:57,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 40 states have (on average 1.05) internal successors, (42), 37 states have internal predecessors, (42), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 07:34:57,120 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 760 transitions. [2022-12-14 07:34:57,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 07:34:57,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:34:57,121 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 07:34:57,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:34:57,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:34:57,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:34:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:34:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash 647123863, now seen corresponding path program 1 times [2022-12-14 07:34:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:34:57,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205263370] [2022-12-14 07:34:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:34:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:34:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:34:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 07:34:57,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:34:57,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205263370] [2022-12-14 07:34:57,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205263370] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:34:57,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370890991] [2022-12-14 07:34:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:34:57,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:34:57,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:34:57,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:34:57,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83e750f6-a2f0-4182-b9fa-df41ef75f8cc/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 07:34:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:34:57,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 07:34:57,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:34:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:34:57,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:34:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:34:57,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370890991] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:34:57,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1944459455] [2022-12-14 07:34:57,731 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-12-14 07:34:57,731 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:34:57,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:34:57,732 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:34:57,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:36:07,392 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 07:36:07,702 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 436 for LOIs [2022-12-14 07:36:07,994 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 254 for LOIs [2022-12-14 07:36:09,588 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2022-12-14 07:36:09,625 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-12-14 07:36:12,965 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 264 for LOIs [2022-12-14 07:36:15,793 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 246 for LOIs [2022-12-14 07:36:15,827 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2022-12-14 07:36:15,867 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-12-14 07:36:17,717 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 268 for LOIs [2022-12-14 07:36:17,774 INFO L180 IcfgInterpreter]: Interpretation finished