./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/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_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/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_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/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 6b54f48e5606af61de5b12570bc2e15a173e4036917e2e3bdec28cef1386724b --- 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 10:40:16,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:40:16,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:40:16,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:40:16,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:40:16,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:40:16,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:40:16,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:40:16,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:40:16,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:40:16,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:40:16,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:40:16,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:40:16,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:40:16,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:40:16,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:40:16,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:40:16,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:40:16,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:40:16,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:40:16,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:40:16,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:40:16,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:40:16,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:40:16,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:40:16,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:40:16,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:40:16,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:40:16,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:40:16,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:40:16,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:40:16,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:40:16,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:40:16,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:40:16,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:40:16,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:40:16,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:40:16,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:40:16,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:40:16,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:40:16,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:40:16,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:40:16,708 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:40:16,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:40:16,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:40:16,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:40:16,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:40:16,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:40:16,710 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:40:16,710 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:40:16,711 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:40:16,711 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:40:16,711 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:40:16,711 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:40:16,711 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:40:16,712 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:40:16,712 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:40:16,712 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:40:16,712 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:40:16,712 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:40:16,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:40:16,713 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:40:16,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:40:16,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:40:16,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:40:16,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:40:16,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:40:16,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:40:16,715 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:40:16,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:40:16,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:40:16,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:40:16,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:40:16,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:40:16,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:40:16,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:40:16,716 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:40:16,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:40:16,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:40:16,717 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:40:16,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:40:16,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:40:16,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:40:16,718 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_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b54f48e5606af61de5b12570bc2e15a173e4036917e2e3bdec28cef1386724b [2022-12-14 10:40:16,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:40:16,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:40:16,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:40:16,911 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:40:16,911 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:40:16,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec27_product32.cil.c [2022-12-14 10:40:19,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:40:19,809 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:40:19,809 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/sv-benchmarks/c/product-lines/email_spec27_product32.cil.c [2022-12-14 10:40:19,821 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/data/6c98d8ae5/422a811e62e54284af6ae67beaa70a61/FLAG2d3904aa6 [2022-12-14 10:40:19,831 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/data/6c98d8ae5/422a811e62e54284af6ae67beaa70a61 [2022-12-14 10:40:19,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:40:19,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:40:19,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:40:19,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:40:19,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:40:19,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:40:19" (1/1) ... [2022-12-14 10:40:19,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457c1a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:19, skipping insertion in model container [2022-12-14 10:40:19,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:40:19" (1/1) ... [2022-12-14 10:40:19,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:40:19,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:40:20,104 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,106 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_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/sv-benchmarks/c/product-lines/email_spec27_product32.cil.c[27975,27988] [2022-12-14 10:40:20,194 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,195 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,198 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,233 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,240 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,241 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,242 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,251 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:40:20,299 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:40:20,352 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,353 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_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/sv-benchmarks/c/product-lines/email_spec27_product32.cil.c[27975,27988] [2022-12-14 10:40:20,370 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,371 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,373 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,378 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,380 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,380 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,382 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,386 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:40:20,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:40:20,435 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:40:20,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20 WrapperNode [2022-12-14 10:40:20,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:40:20,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:40:20,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:40:20,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:40:20,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,509 INFO L138 Inliner]: procedures = 134, calls = 238, calls flagged for inlining = 60, calls inlined = 53, statements flattened = 994 [2022-12-14 10:40:20,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:40:20,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:40:20,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:40:20,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:40:20,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,559 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:40:20,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:40:20,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:40:20,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:40:20,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (1/1) ... [2022-12-14 10:40:20,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:40:20,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:40:20,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:40:20,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:40:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 10:40:20,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 10:40:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 10:40:20,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 10:40:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 10:40:20,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 10:40:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 10:40:20,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 10:40:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 10:40:20,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 10:40:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 10:40:20,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 10:40:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 10:40:20,641 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 10:40:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 10:40:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 10:40:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 10:40:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 10:40:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 10:40:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 10:40:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 10:40:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 10:40:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 10:40:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 10:40:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 10:40:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 10:40:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 10:40:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 10:40:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 10:40:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 10:40:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 10:40:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:40:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 10:40:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 10:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 10:40:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 10:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 10:40:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 10:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 10:40:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 10:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 10:40:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 10:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 10:40:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 10:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-14 10:40:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-14 10:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 10:40:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 10:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 10:40:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 10:40:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 10:40:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 10:40:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 10:40:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 10:40:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 10:40:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 10:40:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:40:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 10:40:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 10:40:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 10:40:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 10:40:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:40:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:40:20,795 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:40:20,797 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:40:21,437 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:40:21,801 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:40:21,801 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:40:21,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:40:21 BoogieIcfgContainer [2022-12-14 10:40:21,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:40:21,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:40:21,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:40:21,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:40:21,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:40:19" (1/3) ... [2022-12-14 10:40:21,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8ed760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:40:21, skipping insertion in model container [2022-12-14 10:40:21,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:20" (2/3) ... [2022-12-14 10:40:21,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8ed760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:40:21, skipping insertion in model container [2022-12-14 10:40:21,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:40:21" (3/3) ... [2022-12-14 10:40:21,814 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product32.cil.c [2022-12-14 10:40:21,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:40:21,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:40:21,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:40:21,892 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;@254ec3f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:40:21,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:40:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 131 states have internal predecessors, (164), 66 states have call successors, (66), 29 states have call predecessors, (66), 29 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-12-14 10:40:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 10:40:21,908 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:40:21,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:40:21,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:40:21,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:40:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1789030038, now seen corresponding path program 1 times [2022-12-14 10:40:21,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:40:21,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097299019] [2022-12-14 10:40:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:21,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:40:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 10:40:22,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:40:22,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097299019] [2022-12-14 10:40:22,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097299019] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:40:22,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:40:22,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:40:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273316219] [2022-12-14 10:40:22,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:40:22,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:40:22,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:40:22,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:40:22,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:40:22,190 INFO L87 Difference]: Start difference. First operand has 223 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 131 states have internal predecessors, (164), 66 states have call successors, (66), 29 states have call predecessors, (66), 29 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 10:40:22,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:40:22,318 INFO L93 Difference]: Finished difference Result 354 states and 463 transitions. [2022-12-14 10:40:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:40:22,321 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 99 [2022-12-14 10:40:22,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:40:22,331 INFO L225 Difference]: With dead ends: 354 [2022-12-14 10:40:22,332 INFO L226 Difference]: Without dead ends: 220 [2022-12-14 10:40:22,336 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 10:40:22,339 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:40:22,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:40:22,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-12-14 10:40:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2022-12-14 10:40:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 128 states have internal predecessors, (158), 66 states have call successors, (66), 29 states have call predecessors, (66), 29 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-12-14 10:40:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 289 transitions. [2022-12-14 10:40:22,391 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 289 transitions. Word has length 99 [2022-12-14 10:40:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:40:22,392 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 289 transitions. [2022-12-14 10:40:22,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 10:40:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 289 transitions. [2022-12-14 10:40:22,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 10:40:22,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:40:22,396 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:40:22,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:40:22,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:40:22,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:40:22,397 INFO L85 PathProgramCache]: Analyzing trace with hash 791923862, now seen corresponding path program 1 times [2022-12-14 10:40:22,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:40:22,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764275431] [2022-12-14 10:40:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:22,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:40:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 10:40:22,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:40:22,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764275431] [2022-12-14 10:40:22,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764275431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:40:22,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:40:22,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:40:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490739545] [2022-12-14 10:40:22,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:40:22,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:40:22,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:40:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:40:22,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:40:22,617 INFO L87 Difference]: Start difference. First operand 220 states and 289 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 10:40:22,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:40:22,741 INFO L93 Difference]: Finished difference Result 350 states and 448 transitions. [2022-12-14 10:40:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:40:22,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 100 [2022-12-14 10:40:22,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:40:22,744 INFO L225 Difference]: With dead ends: 350 [2022-12-14 10:40:22,744 INFO L226 Difference]: Without dead ends: 222 [2022-12-14 10:40:22,745 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 10:40:22,746 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:40:22,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:40:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-12-14 10:40:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-12-14 10:40:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 126 states have (on average 1.2698412698412698) internal successors, (160), 130 states have internal predecessors, (160), 66 states have call successors, (66), 29 states have call predecessors, (66), 29 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-12-14 10:40:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 291 transitions. [2022-12-14 10:40:22,760 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 291 transitions. Word has length 100 [2022-12-14 10:40:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:40:22,760 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 291 transitions. [2022-12-14 10:40:22,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 10:40:22,760 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 291 transitions. [2022-12-14 10:40:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 10:40:22,763 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:40:22,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:40:22,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:40:22,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:40:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:40:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2064860786, now seen corresponding path program 1 times [2022-12-14 10:40:22,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:40:22,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169778922] [2022-12-14 10:40:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:22,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:40:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 10:40:22,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:40:22,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169778922] [2022-12-14 10:40:22,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169778922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:40:22,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:40:22,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:40:22,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476608758] [2022-12-14 10:40:22,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:40:22,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:40:22,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:40:22,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:40:22,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:40:22,914 INFO L87 Difference]: Start difference. First operand 222 states and 291 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 10:40:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:40:23,030 INFO L93 Difference]: Finished difference Result 479 states and 649 transitions. [2022-12-14 10:40:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:40:23,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 116 [2022-12-14 10:40:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:40:23,033 INFO L225 Difference]: With dead ends: 479 [2022-12-14 10:40:23,033 INFO L226 Difference]: Without dead ends: 275 [2022-12-14 10:40:23,035 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 10:40:23,036 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 59 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:40:23,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 516 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:40:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-12-14 10:40:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2022-12-14 10:40:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.34375) internal successors, (215), 164 states have internal predecessors, (215), 80 states have call successors, (80), 29 states have call predecessors, (80), 29 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2022-12-14 10:40:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 374 transitions. [2022-12-14 10:40:23,061 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 374 transitions. Word has length 116 [2022-12-14 10:40:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:40:23,062 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 374 transitions. [2022-12-14 10:40:23,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 10:40:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 374 transitions. [2022-12-14 10:40:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 10:40:23,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:40:23,065 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:40:23,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:40:23,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:40:23,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:40:23,066 INFO L85 PathProgramCache]: Analyzing trace with hash -442428026, now seen corresponding path program 1 times [2022-12-14 10:40:23,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:40:23,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87954348] [2022-12-14 10:40:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:23,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:40:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 10:40:23,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:40:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87954348] [2022-12-14 10:40:23,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87954348] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:40:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218314947] [2022-12-14 10:40:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:23,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:40:23,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:40:23,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:40:23,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:40:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:23,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:40:23,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 10:40:23,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:40:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 10:40:23,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218314947] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:40:23,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1169609488] [2022-12-14 10:40:23,656 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-12-14 10:40:23,656 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:40:23,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:40:23,665 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:40:23,666 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:40:58,022 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 10:40:58,306 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 10:41:00,199 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:41:00,486 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-12-14 10:41:03,745 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 10:41:03,783 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 229 for LOIs [2022-12-14 10:41:03,819 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 237 for LOIs [2022-12-14 10:41:03,855 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-12-14 10:41:03,906 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:42:13,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1169609488] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:42:13,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:42:13,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [4, 4, 4] total 46 [2022-12-14 10:42:13,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418384230] [2022-12-14 10:42:13,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:42:13,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 10:42:13,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:42:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 10:42:13,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1953, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 10:42:13,518 INFO L87 Difference]: Start difference. First operand 270 states and 374 transitions. Second operand has 41 states, 27 states have (on average 2.111111111111111) internal successors, (57), 25 states have internal predecessors, (57), 13 states have call successors, (26), 9 states have call predecessors, (26), 7 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) [2022-12-14 10:42:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:42:54,886 INFO L93 Difference]: Finished difference Result 705 states and 1067 transitions. [2022-12-14 10:42:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-14 10:42:54,887 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 2.111111111111111) internal successors, (57), 25 states have internal predecessors, (57), 13 states have call successors, (26), 9 states have call predecessors, (26), 7 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) Word has length 117 [2022-12-14 10:42:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:42:54,890 INFO L225 Difference]: With dead ends: 705 [2022-12-14 10:42:54,890 INFO L226 Difference]: Without dead ends: 453 [2022-12-14 10:42:54,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 92.2s TimeCoverageRelationStatistics Valid=201, Invalid=2991, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 10:42:54,894 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 388 mSDsluCounter, 6166 mSDsCounter, 0 mSdLazyCounter, 6732 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 6481 SdHoareTripleChecker+Invalid, 6764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 6732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:42:54,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 6481 Invalid, 6764 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [32 Valid, 6732 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time] [2022-12-14 10:42:54,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-12-14 10:42:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 352. [2022-12-14 10:42:55,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 231 states have (on average 1.4155844155844155) internal successors, (327), 235 states have internal predecessors, (327), 86 states have call successors, (86), 36 states have call predecessors, (86), 34 states have return successors, (85), 82 states have call predecessors, (85), 85 states have call successors, (85) [2022-12-14 10:42:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 498 transitions. [2022-12-14 10:42:55,035 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 498 transitions. Word has length 117 [2022-12-14 10:42:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:42:55,036 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 498 transitions. [2022-12-14 10:42:55,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 2.111111111111111) internal successors, (57), 25 states have internal predecessors, (57), 13 states have call successors, (26), 9 states have call predecessors, (26), 7 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) [2022-12-14 10:42:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 498 transitions. [2022-12-14 10:42:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-14 10:42:55,039 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:42:55,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:42:55,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:42:55,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:42:55,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:42:55,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:42:55,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1818304844, now seen corresponding path program 1 times [2022-12-14 10:42:55,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:42:55,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589541913] [2022-12-14 10:42:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:42:55,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:42:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:42:55,402 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 10:42:55,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:42:55,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589541913] [2022-12-14 10:42:55,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589541913] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:42:55,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133442138] [2022-12-14 10:42:55,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:42:55,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:42:55,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:42:55,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:42:55,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:42:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:42:55,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:42:55,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:42:55,664 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 10:42:55,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:42:55,714 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 10:42:55,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133442138] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:42:55,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1588334675] [2022-12-14 10:42:55,718 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2022-12-14 10:42:55,718 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:42:55,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:42:55,719 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:42:55,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:43:22,772 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:43:23,067 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 10:43:24,792 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 10:43:24,830 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:43:25,124 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 267 for LOIs [2022-12-14 10:43:27,795 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-12-14 10:43:42,105 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-12-14 10:43:42,773 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-12-14 10:43:42,814 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-12-14 10:43:43,396 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-12-14 10:43:43,464 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-12-14 10:43:44,052 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-12-14 10:43:45,801 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2022-12-14 10:43:45,843 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-12-14 10:43:45,889 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:44:25,077 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 589 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:44:40,729 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 473 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:44:57,441 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 452 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:45:03,739 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 478 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:46:12,740 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 586 DAG size of output: 473 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:46:32,258 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 631 DAG size of output: 527 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:46:34,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1588334675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:34,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:46:34,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [4, 4, 4] total 78 [2022-12-14 10:46:34,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141842766] [2022-12-14 10:46:34,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:34,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-12-14 10:46:34,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:46:34,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-12-14 10:46:34,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=5747, Unknown=0, NotChecked=0, Total=6006 [2022-12-14 10:46:34,591 INFO L87 Difference]: Start difference. First operand 352 states and 498 transitions. Second operand has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 44 states have internal predecessors, (54), 22 states have call successors, (23), 15 states have call predecessors, (23), 12 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 10:47:42,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:42,204 INFO L93 Difference]: Finished difference Result 711 states and 1002 transitions. [2022-12-14 10:47:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-14 10:47:42,205 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 44 states have internal predecessors, (54), 22 states have call successors, (23), 15 states have call predecessors, (23), 12 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 106 [2022-12-14 10:47:42,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:42,208 INFO L225 Difference]: With dead ends: 711 [2022-12-14 10:47:42,208 INFO L226 Difference]: Without dead ends: 590 [2022-12-14 10:47:42,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 241 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 197.7s TimeCoverageRelationStatistics Valid=345, Invalid=7845, Unknown=0, NotChecked=0, Total=8190 [2022-12-14 10:47:42,210 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 377 mSDsluCounter, 8330 mSDsCounter, 0 mSdLazyCounter, 12905 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 8686 SdHoareTripleChecker+Invalid, 12945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 12905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:42,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 8686 Invalid, 12945 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [40 Valid, 12905 Invalid, 0 Unknown, 0 Unchecked, 37.6s Time] [2022-12-14 10:47:42,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-12-14 10:47:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 445. [2022-12-14 10:47:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 287 states have (on average 1.3693379790940767) internal successors, (393), 292 states have internal predecessors, (393), 111 states have call successors, (111), 50 states have call predecessors, (111), 46 states have return successors, (111), 104 states have call predecessors, (111), 110 states have call successors, (111) [2022-12-14 10:47:42,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 615 transitions. [2022-12-14 10:47:42,433 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 615 transitions. Word has length 106 [2022-12-14 10:47:42,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:42,434 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 615 transitions. [2022-12-14 10:47:42,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 44 states have internal predecessors, (54), 22 states have call successors, (23), 15 states have call predecessors, (23), 12 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 10:47:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 615 transitions. [2022-12-14 10:47:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 10:47:42,436 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:42,436 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:47:42,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 10:47:42,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:47:42,637 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:47:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 895781812, now seen corresponding path program 1 times [2022-12-14 10:47:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:47:42,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991617135] [2022-12-14 10:47:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:42,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:47:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 10:47:42,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:47:42,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991617135] [2022-12-14 10:47:42,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991617135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:42,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:42,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:47:42,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546699681] [2022-12-14 10:47:42,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:42,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:47:42,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:47:42,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:47:42,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:47:42,712 INFO L87 Difference]: Start difference. First operand 445 states and 615 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 10:47:43,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:43,110 INFO L93 Difference]: Finished difference Result 884 states and 1269 transitions. [2022-12-14 10:47:43,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:47:43,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 111 [2022-12-14 10:47:43,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:43,113 INFO L225 Difference]: With dead ends: 884 [2022-12-14 10:47:43,113 INFO L226 Difference]: Without dead ends: 570 [2022-12-14 10:47:43,114 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 10:47:43,114 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 57 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:43,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 522 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:47:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-12-14 10:47:43,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 563. [2022-12-14 10:47:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 374 states have (on average 1.4090909090909092) internal successors, (527), 379 states have internal predecessors, (527), 142 states have call successors, (142), 50 states have call predecessors, (142), 46 states have return successors, (142), 135 states have call predecessors, (142), 141 states have call successors, (142) [2022-12-14 10:47:43,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 811 transitions. [2022-12-14 10:47:43,395 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 811 transitions. Word has length 111 [2022-12-14 10:47:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:43,395 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 811 transitions. [2022-12-14 10:47:43,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 10:47:43,395 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 811 transitions. [2022-12-14 10:47:43,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 10:47:43,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:43,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:47:43,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:47:43,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:47:43,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:43,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1139833347, now seen corresponding path program 1 times [2022-12-14 10:47:43,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:47:43,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87512775] [2022-12-14 10:47:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:47:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 10:47:43,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:47:43,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87512775] [2022-12-14 10:47:43,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87512775] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:47:43,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143139208] [2022-12-14 10:47:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:43,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:47:43,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:47:43,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:47:43,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:47:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:43,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:47:43,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 10:47:43,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:47:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 10:47:43,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143139208] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:47:43,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1315446890] [2022-12-14 10:47:43,831 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-12-14 10:47:43,831 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:47:43,832 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:47:43,832 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:47:43,832 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:48:11,390 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:48:11,681 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 10:48:13,412 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 10:48:13,449 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:48:13,729 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 267 for LOIs [2022-12-14 10:48:16,455 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-12-14 10:48:37,964 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 429 for LOIs [2022-12-14 10:48:39,860 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-12-14 10:48:40,490 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-12-14 10:48:40,595 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-12-14 10:48:41,180 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-12-14 10:48:46,674 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-12-14 10:48:46,715 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2022-12-14 10:48:46,758 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2022-12-14 10:48:46,806 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:49:27,745 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 589 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:49:43,025 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 473 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:50:03,990 WARN L233 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 452 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:50:11,379 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 478 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:51:35,810 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 579 DAG size of output: 446 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:51:50,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1315446890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:50,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:51:50,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [4, 4, 4] total 80 [2022-12-14 10:51:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915252259] [2022-12-14 10:51:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:50,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-14 10:51:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:51:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-14 10:51:50,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=6064, Unknown=0, NotChecked=0, Total=6320 [2022-12-14 10:51:50,991 INFO L87 Difference]: Start difference. First operand 563 states and 811 transitions. Second operand has 75 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 45 states have internal predecessors, (56), 23 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-14 10:53:17,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:17,805 INFO L93 Difference]: Finished difference Result 821 states and 1172 transitions. [2022-12-14 10:53:17,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-12-14 10:53:17,806 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 45 states have internal predecessors, (56), 23 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) Word has length 111 [2022-12-14 10:53:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:17,809 INFO L225 Difference]: With dead ends: 821 [2022-12-14 10:53:17,809 INFO L226 Difference]: Without dead ends: 670 [2022-12-14 10:53:17,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2265 ImplicationChecksByTransitivity, 232.7s TimeCoverageRelationStatistics Valid=420, Invalid=9282, Unknown=0, NotChecked=0, Total=9702 [2022-12-14 10:53:17,812 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 412 mSDsluCounter, 8759 mSDsCounter, 0 mSdLazyCounter, 13502 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 9074 SdHoareTripleChecker+Invalid, 13569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 13502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:17,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 9074 Invalid, 13569 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [67 Valid, 13502 Invalid, 0 Unknown, 0 Unchecked, 37.2s Time] [2022-12-14 10:53:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-12-14 10:53:18,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 556. [2022-12-14 10:53:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 369 states have (on average 1.4065040650406504) internal successors, (519), 374 states have internal predecessors, (519), 139 states have call successors, (139), 51 states have call predecessors, (139), 47 states have return successors, (139), 132 states have call predecessors, (139), 138 states have call successors, (139) [2022-12-14 10:53:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 797 transitions. [2022-12-14 10:53:18,132 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 797 transitions. Word has length 111 [2022-12-14 10:53:18,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:18,133 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 797 transitions. [2022-12-14 10:53:18,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 45 states have internal predecessors, (56), 23 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-14 10:53:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 797 transitions. [2022-12-14 10:53:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 10:53:18,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:18,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:53:18,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:53:18,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:53:18,337 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:53:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash 214130629, now seen corresponding path program 1 times [2022-12-14 10:53:18,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:53:18,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313967676] [2022-12-14 10:53:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:18,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:53:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:18,428 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 10:53:18,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:53:18,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313967676] [2022-12-14 10:53:18,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313967676] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:53:18,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722351197] [2022-12-14 10:53:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:53:18,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:53:18,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:53:18,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:53:18,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40b9a03a-9da3-4f8e-991c-4722b24dd7d9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:53:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:53:18,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:53:18,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:53:18,680 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 10:53:18,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:53:18,728 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 10:53:18,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722351197] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:53:18,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1128426484] [2022-12-14 10:53:18,732 INFO L159 IcfgInterpreter]: Started Sifa with 94 locations of interest [2022-12-14 10:53:18,732 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:53:18,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:53:18,732 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:53:18,732 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:53:50,575 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 10:53:50,859 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2022-12-14 10:53:52,602 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 10:53:52,638 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:53:52,932 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-12-14 10:53:56,945 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2022-12-14 10:54:20,903 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-12-14 10:54:21,551 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-12-14 10:54:21,594 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-12-14 10:54:22,166 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-12-14 10:54:22,235 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-12-14 10:54:22,820 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs