./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/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_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/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_d46c16d7-378d-463b-a885-68d3599c8a3f/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 4d912bb29f92146b3af89aaec6570a3971933bc9b9284807c8f8b532bfb963bf --- 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 11:53:28,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:53:28,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:53:28,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:53:28,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:53:28,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:53:28,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:53:28,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:53:28,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:53:28,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:53:28,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:53:28,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:53:28,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:53:28,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:53:28,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:53:28,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:53:28,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:53:28,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:53:28,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:53:28,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:53:28,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:53:28,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:53:28,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:53:28,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:53:28,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:53:28,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:53:28,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:53:28,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:53:28,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:53:28,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:53:28,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:53:28,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:53:28,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:53:28,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:53:28,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:53:28,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:53:28,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:53:28,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:53:28,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:53:28,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:53:28,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:53:28,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:53:28,690 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:53:28,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:53:28,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:53:28,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:53:28,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:53:28,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:53:28,692 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:53:28,692 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:53:28,692 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:53:28,692 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:53:28,692 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:53:28,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:53:28,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:53:28,693 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:53:28,693 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:53:28,693 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:53:28,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:53:28,693 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:53:28,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:53:28,694 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:53:28,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:53:28,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:53:28,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:53:28,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:53:28,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:53:28,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:53:28,695 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:53:28,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:53:28,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:53:28,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:53:28,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:53:28,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:53:28,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:53:28,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:53:28,696 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:53:28,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:53:28,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:53:28,697 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:53:28,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:53:28,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:53:28,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:53:28,697 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_d46c16d7-378d-463b-a885-68d3599c8a3f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d912bb29f92146b3af89aaec6570a3971933bc9b9284807c8f8b532bfb963bf [2022-12-14 11:53:28,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:53:28,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:53:28,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:53:28,886 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:53:28,887 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:53:28,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec27_product17.cil.c [2022-12-14 11:53:31,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:53:31,666 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:53:31,666 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/sv-benchmarks/c/product-lines/email_spec27_product17.cil.c [2022-12-14 11:53:31,682 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/data/ff0cf6224/fa150de2f2344c718feea0dee0625645/FLAG1aea3a042 [2022-12-14 11:53:31,987 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/data/ff0cf6224/fa150de2f2344c718feea0dee0625645 [2022-12-14 11:53:31,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:53:31,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:53:31,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:53:31,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:53:32,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:53:32,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:53:31" (1/1) ... [2022-12-14 11:53:32,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4681c7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32, skipping insertion in model container [2022-12-14 11:53:32,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:53:31" (1/1) ... [2022-12-14 11:53:32,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:53:32,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:53:32,237 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,252 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,253 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,257 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,313 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,314 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,319 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,329 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,345 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_d46c16d7-378d-463b-a885-68d3599c8a3f/sv-benchmarks/c/product-lines/email_spec27_product17.cil.c[18815,18828] [2022-12-14 11:53:32,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:53:32,485 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:53:32,498 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,500 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,501 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,502 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,509 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,510 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,512 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,516 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:53:32,521 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_d46c16d7-378d-463b-a885-68d3599c8a3f/sv-benchmarks/c/product-lines/email_spec27_product17.cil.c[18815,18828] [2022-12-14 11:53:32,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:53:32,592 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:53:32,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32 WrapperNode [2022-12-14 11:53:32,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:53:32,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:53:32,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:53:32,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:53:32,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,662 INFO L138 Inliner]: procedures = 127, calls = 209, calls flagged for inlining = 52, calls inlined = 46, statements flattened = 888 [2022-12-14 11:53:32,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:53:32,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:53:32,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:53:32,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:53:32,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,703 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:53:32,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:53:32,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:53:32,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:53:32,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (1/1) ... [2022-12-14 11:53:32,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:53:32,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:53:32,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:53:32,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:53:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 11:53:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 11:53:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 11:53:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 11:53:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-12-14 11:53:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-12-14 11:53:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 11:53:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 11:53:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 11:53:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 11:53:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 11:53:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 11:53:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 11:53:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 11:53:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 11:53:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 11:53:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 11:53:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 11:53:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 11:53:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 11:53:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 11:53:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 11:53:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 11:53:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:53:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 11:53:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 11:53:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 11:53:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 11:53:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 11:53:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 11:53:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 11:53:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 11:53:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 11:53:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 11:53:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-14 11:53:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-14 11:53:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 11:53:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 11:53:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 11:53:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 11:53:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 11:53:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 11:53:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 11:53:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 11:53:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:53:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 11:53:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 11:53:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 11:53:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 11:53:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:53:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:53:32,929 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:53:32,931 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:53:33,513 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:53:33,805 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:53:33,805 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:53:33,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:53:33 BoogieIcfgContainer [2022-12-14 11:53:33,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:53:33,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:53:33,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:53:33,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:53:33,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:53:31" (1/3) ... [2022-12-14 11:53:33,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa8464f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:53:33, skipping insertion in model container [2022-12-14 11:53:33,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:53:32" (2/3) ... [2022-12-14 11:53:33,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa8464f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:53:33, skipping insertion in model container [2022-12-14 11:53:33,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:53:33" (3/3) ... [2022-12-14 11:53:33,813 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product17.cil.c [2022-12-14 11:53:33,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:53:33,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:53:33,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:53:33,869 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;@518e66c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:53:33,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:53:33,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 101 states have (on average 1.3267326732673268) internal successors, (134), 104 states have internal predecessors, (134), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 11:53:33,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 11:53:33,884 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:53:33,884 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:53:33,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:53:33,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:53:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash -574929333, now seen corresponding path program 1 times [2022-12-14 11:53:33,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:53:33,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432436569] [2022-12-14 11:53:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:53:33,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:53:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:53:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:53:34,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:53:34,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432436569] [2022-12-14 11:53:34,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432436569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:53:34,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:53:34,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:53:34,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235722411] [2022-12-14 11:53:34,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:53:34,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:53:34,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:53:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:53:34,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:53:34,134 INFO L87 Difference]: Start difference. First operand has 177 states, 101 states have (on average 1.3267326732673268) internal successors, (134), 104 states have internal predecessors, (134), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 11:53:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:53:34,238 INFO L93 Difference]: Finished difference Result 262 states and 343 transitions. [2022-12-14 11:53:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:53:34,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-12-14 11:53:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:53:34,247 INFO L225 Difference]: With dead ends: 262 [2022-12-14 11:53:34,247 INFO L226 Difference]: Without dead ends: 174 [2022-12-14 11:53:34,250 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 11:53:34,253 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:53:34,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:53:34,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-12-14 11:53:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-12-14 11:53:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 99 states have (on average 1.292929292929293) internal successors, (128), 101 states have internal predecessors, (128), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 11:53:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2022-12-14 11:53:34,290 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 75 [2022-12-14 11:53:34,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:53:34,291 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-12-14 11:53:34,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 11:53:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2022-12-14 11:53:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 11:53:34,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:53:34,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:53:34,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:53:34,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:53:34,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:53:34,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2015080423, now seen corresponding path program 1 times [2022-12-14 11:53:34,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:53:34,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676405256] [2022-12-14 11:53:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:53:34,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:53:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:53:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:53:34,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:53:34,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676405256] [2022-12-14 11:53:34,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676405256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:53:34,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:53:34,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:53:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082178896] [2022-12-14 11:53:34,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:53:34,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:53:34,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:53:34,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:53:34,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:53:34,435 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 11:53:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:53:34,528 INFO L93 Difference]: Finished difference Result 258 states and 328 transitions. [2022-12-14 11:53:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:53:34,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-12-14 11:53:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:53:34,531 INFO L225 Difference]: With dead ends: 258 [2022-12-14 11:53:34,532 INFO L226 Difference]: Without dead ends: 176 [2022-12-14 11:53:34,532 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 11:53:34,533 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:53:34,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 393 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:53:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-12-14 11:53:34,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-12-14 11:53:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 101 states have (on average 1.2871287128712872) internal successors, (130), 103 states have internal predecessors, (130), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-12-14 11:53:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 231 transitions. [2022-12-14 11:53:34,545 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 231 transitions. Word has length 76 [2022-12-14 11:53:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:53:34,546 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 231 transitions. [2022-12-14 11:53:34,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 11:53:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 231 transitions. [2022-12-14 11:53:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 11:53:34,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:53:34,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:53:34,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:53:34,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:53:34,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:53:34,549 INFO L85 PathProgramCache]: Analyzing trace with hash 675140879, now seen corresponding path program 1 times [2022-12-14 11:53:34,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:53:34,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938089854] [2022-12-14 11:53:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:53:34,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:53:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:53:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:53:34,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:53:34,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938089854] [2022-12-14 11:53:34,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938089854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:53:34,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:53:34,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:53:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322357601] [2022-12-14 11:53:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:53:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:53:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:53:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:53:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:53:34,650 INFO L87 Difference]: Start difference. First operand 176 states and 231 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 11:53:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:53:34,749 INFO L93 Difference]: Finished difference Result 387 states and 529 transitions. [2022-12-14 11:53:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:53:34,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-12-14 11:53:34,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:53:34,752 INFO L225 Difference]: With dead ends: 387 [2022-12-14 11:53:34,753 INFO L226 Difference]: Without dead ends: 229 [2022-12-14 11:53:34,754 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 11:53:34,755 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 59 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:53:34,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 408 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:53:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-12-14 11:53:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 224. [2022-12-14 11:53:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 135 states have (on average 1.3703703703703705) internal successors, (185), 137 states have internal predecessors, (185), 65 states have call successors, (65), 23 states have call predecessors, (65), 23 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-12-14 11:53:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 314 transitions. [2022-12-14 11:53:34,783 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 314 transitions. Word has length 81 [2022-12-14 11:53:34,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:53:34,784 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 314 transitions. [2022-12-14 11:53:34,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 11:53:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 314 transitions. [2022-12-14 11:53:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 11:53:34,788 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:53:34,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:53:34,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:53:34,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:53:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:53:34,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1686829409, now seen corresponding path program 1 times [2022-12-14 11:53:34,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:53:34,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609149289] [2022-12-14 11:53:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:53:34,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:53:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:53:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:53:34,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:53:34,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609149289] [2022-12-14 11:53:34,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609149289] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:53:34,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923935048] [2022-12-14 11:53:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:53:34,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:53:34,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:53:34,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:53:34,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:53:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:53:35,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:53:35,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:53:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:53:35,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:53:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:53:35,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923935048] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:53:35,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [639531425] [2022-12-14 11:53:35,297 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 11:53:35,298 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:53:35,301 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:53:35,306 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:53:35,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:53:58,495 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 11:53:58,778 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:53:59,059 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:54:38,864 WARN L233 SmtUtils]: Spent 11.21s on a formula simplification. DAG size of input: 579 DAG size of output: 449 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:54:54,354 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 568 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:54:59,653 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 564 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:55:00,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [639531425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:55:00,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:55:00,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2022-12-14 11:55:00,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355312639] [2022-12-14 11:55:00,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:55:00,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 11:55:00,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:00,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 11:55:00,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:55:00,516 INFO L87 Difference]: Start difference. First operand 224 states and 314 transitions. Second operand has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-14 11:55:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:08,001 INFO L93 Difference]: Finished difference Result 530 states and 795 transitions. [2022-12-14 11:55:08,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 11:55:08,002 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 82 [2022-12-14 11:55:08,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:08,004 INFO L225 Difference]: With dead ends: 530 [2022-12-14 11:55:08,004 INFO L226 Difference]: Without dead ends: 324 [2022-12-14 11:55:08,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 61.4s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:55:08,007 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 107 mSDsluCounter, 3071 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:08,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 3316 Invalid, 2236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-12-14 11:55:08,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-12-14 11:55:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 247. [2022-12-14 11:55:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 157 states have (on average 1.3885350318471337) internal successors, (218), 159 states have internal predecessors, (218), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-12-14 11:55:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 347 transitions. [2022-12-14 11:55:08,119 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 347 transitions. Word has length 82 [2022-12-14 11:55:08,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:08,120 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 347 transitions. [2022-12-14 11:55:08,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-14 11:55:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 347 transitions. [2022-12-14 11:55:08,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 11:55:08,123 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:08,124 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:55:08,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:55:08,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:08,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:55:08,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:08,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1298584836, now seen corresponding path program 1 times [2022-12-14 11:55:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:08,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916829267] [2022-12-14 11:55:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:08,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 11:55:08,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:08,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916829267] [2022-12-14 11:55:08,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916829267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:55:08,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:55:08,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:55:08,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258483303] [2022-12-14 11:55:08,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:55:08,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:55:08,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:55:08,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:55:08,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:55:08,420 INFO L87 Difference]: Start difference. First operand 247 states and 347 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 11:55:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:55:08,712 INFO L93 Difference]: Finished difference Result 597 states and 874 transitions. [2022-12-14 11:55:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:55:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 87 [2022-12-14 11:55:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:55:08,715 INFO L225 Difference]: With dead ends: 597 [2022-12-14 11:55:08,715 INFO L226 Difference]: Without dead ends: 374 [2022-12-14 11:55:08,716 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 11:55:08,717 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 57 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:55:08,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 419 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:55:08,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-12-14 11:55:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 369. [2022-12-14 11:55:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 248 states have (on average 1.4435483870967742) internal successors, (358), 250 states have internal predecessors, (358), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-14 11:55:08,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 549 transitions. [2022-12-14 11:55:08,925 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 549 transitions. Word has length 87 [2022-12-14 11:55:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:55:08,925 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 549 transitions. [2022-12-14 11:55:08,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 11:55:08,925 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 549 transitions. [2022-12-14 11:55:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 11:55:08,927 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:55:08,927 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:55:08,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:55:08,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:55:08,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:55:08,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1788981353, now seen corresponding path program 1 times [2022-12-14 11:55:08,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:55:08,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037856410] [2022-12-14 11:55:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:08,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:55:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:09,034 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 11:55:09,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:55:09,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037856410] [2022-12-14 11:55:09,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037856410] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:55:09,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928248736] [2022-12-14 11:55:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:55:09,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:55:09,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:55:09,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:55:09,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:55:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:55:09,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:55:09,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:55:09,275 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 11:55:09,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:55:09,326 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 11:55:09,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928248736] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:55:09,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1521930381] [2022-12-14 11:55:09,329 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-12-14 11:55:09,330 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:55:09,330 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:55:09,330 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:55:09,330 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:55:50,046 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 11:55:50,332 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-12-14 11:55:50,623 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:56:27,620 WARN L233 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 579 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:56:45,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1521930381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:56:45,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:56:45,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 11:56:45,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130089905] [2022-12-14 11:56:45,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:56:45,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 11:56:45,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:56:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 11:56:45,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-12-14 11:56:45,809 INFO L87 Difference]: Start difference. First operand 369 states and 549 transitions. Second operand has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-12-14 11:57:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:57:02,863 INFO L93 Difference]: Finished difference Result 824 states and 1285 transitions. [2022-12-14 11:57:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 11:57:02,864 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 88 [2022-12-14 11:57:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:57:02,866 INFO L225 Difference]: With dead ends: 824 [2022-12-14 11:57:02,866 INFO L226 Difference]: Without dead ends: 518 [2022-12-14 11:57:02,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 64.9s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 11:57:02,868 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 134 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-14 11:57:02,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 2965 Invalid, 2195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-12-14 11:57:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-12-14 11:57:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 418. [2022-12-14 11:57:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 293 states have (on average 1.477815699658703) internal successors, (433), 297 states have internal predecessors, (433), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-12-14 11:57:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 630 transitions. [2022-12-14 11:57:03,065 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 630 transitions. Word has length 88 [2022-12-14 11:57:03,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:57:03,065 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 630 transitions. [2022-12-14 11:57:03,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-12-14 11:57:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 630 transitions. [2022-12-14 11:57:03,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 11:57:03,068 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:57:03,068 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:57:03,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 11:57:03,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 11:57:03,270 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:57:03,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:57:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1224425973, now seen corresponding path program 1 times [2022-12-14 11:57:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:57:03,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678502469] [2022-12-14 11:57:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:57:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:57:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:57:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:57:03,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:57:03,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678502469] [2022-12-14 11:57:03,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678502469] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:57:03,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29620984] [2022-12-14 11:57:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:57:03,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:57:03,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:57:03,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:57:03,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:57:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:57:03,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:57:03,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:57:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:57:03,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:57:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:57:03,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29620984] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:57:03,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1364608473] [2022-12-14 11:57:03,717 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2022-12-14 11:57:03,717 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:57:03,718 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:57:03,718 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:57:03,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:58:31,338 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 11:58:31,623 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 229 for LOIs [2022-12-14 11:58:31,679 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 228 for LOIs [2022-12-14 11:58:31,734 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 224 for LOIs [2022-12-14 11:58:32,851 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-12-14 11:58:32,912 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2022-12-14 11:58:32,947 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:58:33,242 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 226 for LOIs [2022-12-14 11:58:35,607 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 213 for LOIs [2022-12-14 11:58:35,639 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 226 for LOIs [2022-12-14 11:58:39,139 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 385 for LOIs [2022-12-14 11:58:39,314 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 219 for LOIs [2022-12-14 11:58:39,344 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-12-14 11:58:40,644 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:59:15,170 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 632 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:00:04,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1364608473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:00:04,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:00:04,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [4, 4, 4] total 64 [2022-12-14 12:00:04,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292400365] [2022-12-14 12:00:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:00:04,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-14 12:00:04,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:00:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-14 12:00:04,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3860, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 12:00:04,455 INFO L87 Difference]: Start difference. First operand 418 states and 630 transitions. Second operand has 59 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 19 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2022-12-14 12:00:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:00:45,482 INFO L93 Difference]: Finished difference Result 938 states and 1448 transitions. [2022-12-14 12:00:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-14 12:00:45,483 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 19 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) Word has length 91 [2022-12-14 12:00:45,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:00:45,486 INFO L225 Difference]: With dead ends: 938 [2022-12-14 12:00:45,487 INFO L226 Difference]: Without dead ends: 632 [2022-12-14 12:00:45,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 99.9s TimeCoverageRelationStatistics Valid=262, Invalid=5438, Unknown=0, NotChecked=0, Total=5700 [2022-12-14 12:00:45,490 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 301 mSDsluCounter, 6400 mSDsCounter, 0 mSdLazyCounter, 9650 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 6643 SdHoareTripleChecker+Invalid, 9689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 9650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:00:45,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 6643 Invalid, 9689 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [39 Valid, 9650 Invalid, 0 Unknown, 0 Unchecked, 24.1s Time] [2022-12-14 12:00:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-12-14 12:00:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 566. [2022-12-14 12:00:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 412 states have (on average 1.4975728155339805) internal successors, (617), 419 states have internal predecessors, (617), 119 states have call successors, (119), 36 states have call predecessors, (119), 34 states have return successors, (119), 110 states have call predecessors, (119), 118 states have call successors, (119) [2022-12-14 12:00:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 855 transitions. [2022-12-14 12:00:45,846 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 855 transitions. Word has length 91 [2022-12-14 12:00:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:00:45,847 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 855 transitions. [2022-12-14 12:00:45,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 19 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2022-12-14 12:00:45,847 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 855 transitions. [2022-12-14 12:00:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 12:00:45,848 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:00:45,848 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:00:45,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 12:00:46,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 12:00:46,050 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:00:46,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:00:46,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1076665186, now seen corresponding path program 1 times [2022-12-14 12:00:46,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:00:46,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634572009] [2022-12-14 12:00:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:00:46,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:00:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:00:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:00:46,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:00:46,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634572009] [2022-12-14 12:00:46,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634572009] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:00:46,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557150913] [2022-12-14 12:00:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:00:46,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:00:46,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:00:46,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:00:46,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:00:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:00:46,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:00:46,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:00:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:00:46,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:00:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:00:46,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557150913] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:00:46,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931587361] [2022-12-14 12:00:46,476 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-12-14 12:00:46,476 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:00:46,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:00:46,477 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:00:46,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:02:23,671 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 12:02:23,951 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2022-12-14 12:02:24,219 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2022-12-14 12:02:24,488 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 224 for LOIs [2022-12-14 12:02:25,611 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-12-14 12:02:25,665 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2022-12-14 12:02:25,694 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 12:02:25,982 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 224 for LOIs [2022-12-14 12:02:28,504 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 233 for LOIs [2022-12-14 12:02:28,544 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 226 for LOIs [2022-12-14 12:02:41,979 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 385 for LOIs [2022-12-14 12:02:42,154 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 219 for LOIs [2022-12-14 12:02:42,184 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-12-14 12:02:45,585 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 219 for LOIs [2022-12-14 12:02:45,616 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 385 for LOIs [2022-12-14 12:02:45,805 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:03:29,593 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 528 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:03:52,622 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 526 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:04:56,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1931587361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:04:56,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:04:56,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [4, 4, 4] total 74 [2022-12-14 12:04:56,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145222132] [2022-12-14 12:04:56,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:04:56,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-12-14 12:04:56,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:04:56,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-12-14 12:04:56,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=5162, Unknown=0, NotChecked=0, Total=5402 [2022-12-14 12:04:56,933 INFO L87 Difference]: Start difference. First operand 566 states and 855 transitions. Second operand has 69 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 39 states have internal predecessors, (49), 21 states have call successors, (22), 16 states have call predecessors, (22), 13 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-12-14 12:05:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:05:46,239 INFO L93 Difference]: Finished difference Result 724 states and 1078 transitions. [2022-12-14 12:05:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-12-14 12:05:46,240 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 39 states have internal predecessors, (49), 21 states have call successors, (22), 16 states have call predecessors, (22), 13 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) Word has length 96 [2022-12-14 12:05:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:05:46,242 INFO L225 Difference]: With dead ends: 724 [2022-12-14 12:05:46,242 INFO L226 Difference]: Without dead ends: 642 [2022-12-14 12:05:46,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 154.7s TimeCoverageRelationStatistics Valid=331, Invalid=6809, Unknown=0, NotChecked=0, Total=7140 [2022-12-14 12:05:46,244 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 272 mSDsluCounter, 5441 mSDsCounter, 0 mSdLazyCounter, 9257 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 9283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 9257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-12-14 12:05:46,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 5648 Invalid, 9283 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [26 Valid, 9257 Invalid, 0 Unknown, 0 Unchecked, 24.9s Time] [2022-12-14 12:05:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-12-14 12:05:46,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 574. [2022-12-14 12:05:46,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 417 states have (on average 1.4916067146282974) internal successors, (622), 424 states have internal predecessors, (622), 120 states have call successors, (120), 38 states have call predecessors, (120), 36 states have return successors, (120), 111 states have call predecessors, (120), 119 states have call successors, (120) [2022-12-14 12:05:46,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 862 transitions. [2022-12-14 12:05:46,608 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 862 transitions. Word has length 96 [2022-12-14 12:05:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:05:46,608 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 862 transitions. [2022-12-14 12:05:46,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 39 states have internal predecessors, (49), 21 states have call successors, (22), 16 states have call predecessors, (22), 13 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-12-14 12:05:46,608 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 862 transitions. [2022-12-14 12:05:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 12:05:46,611 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:05:46,611 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:05:46,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 12:05:46,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:05:46,813 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:05:46,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:05:46,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1302008130, now seen corresponding path program 1 times [2022-12-14 12:05:46,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:05:46,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874158258] [2022-12-14 12:05:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:05:46,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:05:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:05:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 12:05:46,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:05:46,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874158258] [2022-12-14 12:05:46,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874158258] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:05:46,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598692240] [2022-12-14 12:05:46,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:05:46,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:05:46,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:05:46,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:05:46,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:05:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:05:47,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:05:47,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:05:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 12:05:47,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:05:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 12:05:47,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598692240] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:05:47,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1284116004] [2022-12-14 12:05:47,256 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-12-14 12:05:47,256 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:05:47,257 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:05:47,257 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:05:47,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:06:14,345 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 12:06:14,631 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 12:06:14,912 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:07:04,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1284116004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:07:04,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:07:04,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [6, 5, 5] total 34 [2022-12-14 12:07:04,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234860599] [2022-12-14 12:07:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:07:04,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 12:07:04,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:07:04,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 12:07:04,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 12:07:04,462 INFO L87 Difference]: Start difference. First operand 574 states and 862 transitions. Second operand has 26 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-12-14 12:07:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:25,431 INFO L93 Difference]: Finished difference Result 1075 states and 1682 transitions. [2022-12-14 12:07:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 12:07:25,432 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 93 [2022-12-14 12:07:25,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:25,437 INFO L225 Difference]: With dead ends: 1075 [2022-12-14 12:07:25,438 INFO L226 Difference]: Without dead ends: 769 [2022-12-14 12:07:25,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 250 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 62.9s TimeCoverageRelationStatistics Valid=237, Invalid=1569, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 12:07:25,440 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 442 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:25,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 3014 Invalid, 2471 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-12-14 12:07:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-12-14 12:07:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 651. [2022-12-14 12:07:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 484 states have (on average 1.506198347107438) internal successors, (729), 497 states have internal predecessors, (729), 128 states have call successors, (128), 40 states have call predecessors, (128), 38 states have return successors, (128), 113 states have call predecessors, (128), 127 states have call successors, (128) [2022-12-14 12:07:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 985 transitions. [2022-12-14 12:07:25,943 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 985 transitions. Word has length 93 [2022-12-14 12:07:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:25,943 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 985 transitions. [2022-12-14 12:07:25,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-12-14 12:07:25,944 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 985 transitions. [2022-12-14 12:07:25,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 12:07:25,945 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:25,945 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:07:25,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 12:07:26,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:07:26,147 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:07:26,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:26,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1547676851, now seen corresponding path program 1 times [2022-12-14 12:07:26,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:07:26,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178027045] [2022-12-14 12:07:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:26,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:07:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 12:07:26,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:07:26,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178027045] [2022-12-14 12:07:26,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178027045] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:07:26,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306599918] [2022-12-14 12:07:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:26,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:07:26,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:07:26,280 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:07:26,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46c16d7-378d-463b-a885-68d3599c8a3f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 12:07:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:26,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:07:26,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:07:26,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:07:26,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306599918] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:26,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [241577485] [2022-12-14 12:07:26,600 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-12-14 12:07:26,600 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:07:26,600 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:07:26,601 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:07:26,601 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs