./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product25.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_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/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_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/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_2e5c96b2-4c3a-4586-932b-b876c100502c/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 be72096c105f582e8528565b95ebbdcff5f4be75e7838295d3ddf5b4552aba69 --- 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 04:48:58,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:48:58,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:48:58,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:48:58,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:48:58,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:48:58,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:48:58,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:48:58,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:48:58,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:48:58,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:48:58,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:48:58,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:48:58,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:48:58,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:48:58,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:48:58,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:48:58,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:48:58,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:48:58,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:48:58,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:48:58,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:48:58,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:48:58,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:48:58,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:48:58,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:48:58,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:48:58,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:48:58,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:48:58,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:48:58,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:48:58,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:48:58,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:48:58,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:48:58,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:48:58,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:48:58,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:48:58,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:48:58,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:48:58,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:48:58,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:48:58,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 04:48:58,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:48:58,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:48:58,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:48:58,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:48:58,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:48:58,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:48:58,624 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:48:58,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:48:58,624 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:48:58,624 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:48:58,624 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:48:58,624 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:48:58,624 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:48:58,625 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:48:58,625 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:48:58,625 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:48:58,625 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:48:58,625 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:48:58,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:48:58,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 04:48:58,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:48:58,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 04:48:58,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:48:58,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:48:58,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:48:58,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:48:58,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 04:48:58,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:48:58,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:48:58,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:48:58,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:48:58,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:48:58,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:48:58,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:48:58,628 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:48:58,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:48:58,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:48:58,628 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:48:58,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:48:58,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:48:58,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:48:58,629 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_2e5c96b2-4c3a-4586-932b-b876c100502c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be72096c105f582e8528565b95ebbdcff5f4be75e7838295d3ddf5b4552aba69 [2022-12-14 04:48:58,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:48:58,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:48:58,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:48:58,821 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:48:58,822 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:48:58,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c [2022-12-14 04:49:01,359 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:49:01,580 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:49:01,580 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c [2022-12-14 04:49:01,591 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/data/b50f773d9/8306d0cf420d41ea9b3e0aa69b4b79d5/FLAG7e7b2d34e [2022-12-14 04:49:01,603 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/data/b50f773d9/8306d0cf420d41ea9b3e0aa69b4b79d5 [2022-12-14 04:49:01,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:49:01,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:49:01,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:49:01,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:49:01,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:49:01,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:49:01" (1/1) ... [2022-12-14 04:49:01,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d123e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:01, skipping insertion in model container [2022-12-14 04:49:01,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:49:01" (1/1) ... [2022-12-14 04:49:01,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:49:01,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:49:01,816 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:01,827 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:01,828 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:01,830 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:01,843 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:01,939 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:01,940 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:01,943 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:01,949 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:01,956 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_2e5c96b2-4c3a-4586-932b-b876c100502c/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c[43418,43431] [2022-12-14 04:49:02,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:49:02,029 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:49:02,039 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:02,041 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:02,041 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:02,042 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:02,046 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:02,069 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:02,069 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:02,071 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:02,074 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 04:49:02,077 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_2e5c96b2-4c3a-4586-932b-b876c100502c/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c[43418,43431] [2022-12-14 04:49:02,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:49:02,120 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:49:02,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02 WrapperNode [2022-12-14 04:49:02,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:49:02,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:49:02,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:49:02,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:49:02,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,179 INFO L138 Inliner]: procedures = 130, calls = 217, calls flagged for inlining = 61, calls inlined = 58, statements flattened = 1072 [2022-12-14 04:49:02,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:49:02,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:49:02,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:49:02,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:49:02,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,211 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:49:02,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:49:02,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:49:02,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:49:02,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (1/1) ... [2022-12-14 04:49:02,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:49:02,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:02,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:49:02,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:49:02,318 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 04:49:02,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 04:49:02,319 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 04:49:02,319 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 04:49:02,319 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-12-14 04:49:02,319 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-12-14 04:49:02,319 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 04:49:02,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 04:49:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 04:49:02,320 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 04:49:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 04:49:02,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 04:49:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 04:49:02,320 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 04:49:02,320 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 04:49:02,321 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 04:49:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 04:49:02,321 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 04:49:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 04:49:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 04:49:02,321 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 04:49:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 04:49:02,321 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 04:49:02,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:49:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 04:49:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 04:49:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 04:49:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 04:49:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 04:49:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 04:49:02,322 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 04:49:02,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 04:49:02,323 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 04:49:02,323 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 04:49:02,323 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 04:49:02,323 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 04:49:02,323 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 04:49:02,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 04:49:02,323 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 04:49:02,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 04:49:02,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:49:02,324 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 04:49:02,324 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 04:49:02,324 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 04:49:02,324 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 04:49:02,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:49:02,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:49:02,477 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:49:02,479 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:49:03,046 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:49:03,363 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:49:03,363 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 04:49:03,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:49:03 BoogieIcfgContainer [2022-12-14 04:49:03,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:49:03,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:49:03,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:49:03,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:49:03,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:49:01" (1/3) ... [2022-12-14 04:49:03,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240a4274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:49:03, skipping insertion in model container [2022-12-14 04:49:03,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:49:02" (2/3) ... [2022-12-14 04:49:03,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240a4274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:49:03, skipping insertion in model container [2022-12-14 04:49:03,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:49:03" (3/3) ... [2022-12-14 04:49:03,371 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product25.cil.c [2022-12-14 04:49:03,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:49:03,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:49:03,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:49:03,427 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;@11191647, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:49:03,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:49:03,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 106 states have internal predecessors, (136), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-14 04:49:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 04:49:03,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:03,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:03,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:03,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1056618461, now seen corresponding path program 1 times [2022-12-14 04:49:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:03,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531358025] [2022-12-14 04:49:03,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:03,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:49:03,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:03,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531358025] [2022-12-14 04:49:03,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531358025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:03,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:49:03,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:49:03,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109802533] [2022-12-14 04:49:03,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:03,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 04:49:03,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:03,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 04:49:03,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 04:49:03,706 INFO L87 Difference]: Start difference. First operand has 180 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 106 states have internal predecessors, (136), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 04:49:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:03,823 INFO L93 Difference]: Finished difference Result 268 states and 359 transitions. [2022-12-14 04:49:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 04:49:03,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-12-14 04:49:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:03,836 INFO L225 Difference]: With dead ends: 268 [2022-12-14 04:49:03,836 INFO L226 Difference]: Without dead ends: 177 [2022-12-14 04:49:03,840 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 04:49:03,843 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:03,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:49:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-12-14 04:49:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-12-14 04:49:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 101 states have (on average 1.2871287128712872) internal successors, (130), 103 states have internal predecessors, (130), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-12-14 04:49:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 237 transitions. [2022-12-14 04:49:03,891 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 237 transitions. Word has length 71 [2022-12-14 04:49:03,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:03,893 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 237 transitions. [2022-12-14 04:49:03,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 04:49:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 237 transitions. [2022-12-14 04:49:03,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 04:49:03,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:03,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:03,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:49:03,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:03,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:03,898 INFO L85 PathProgramCache]: Analyzing trace with hash 476023464, now seen corresponding path program 1 times [2022-12-14 04:49:03,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:03,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383922170] [2022-12-14 04:49:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:03,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:04,076 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:49:04,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:04,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383922170] [2022-12-14 04:49:04,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383922170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:04,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:49:04,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:49:04,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053345735] [2022-12-14 04:49:04,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:04,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:49:04,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:49:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:04,080 INFO L87 Difference]: Start difference. First operand 177 states and 237 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 04:49:04,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:04,210 INFO L93 Difference]: Finished difference Result 264 states and 344 transitions. [2022-12-14 04:49:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:04,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-12-14 04:49:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:04,213 INFO L225 Difference]: With dead ends: 264 [2022-12-14 04:49:04,213 INFO L226 Difference]: Without dead ends: 179 [2022-12-14 04:49:04,214 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 04:49:04,215 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:04,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 401 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:49:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-12-14 04:49:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-12-14 04:49:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 103 states have (on average 1.2815533980582525) internal successors, (132), 105 states have internal predecessors, (132), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-12-14 04:49:04,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 239 transitions. [2022-12-14 04:49:04,234 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 239 transitions. Word has length 72 [2022-12-14 04:49:04,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:04,235 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 239 transitions. [2022-12-14 04:49:04,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 04:49:04,235 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 239 transitions. [2022-12-14 04:49:04,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 04:49:04,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:04,239 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:04,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:49:04,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:04,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:04,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2041658440, now seen corresponding path program 1 times [2022-12-14 04:49:04,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:04,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654099404] [2022-12-14 04:49:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:04,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:49:04,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:04,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654099404] [2022-12-14 04:49:04,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654099404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:49:04,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:49:04,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:49:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808287065] [2022-12-14 04:49:04,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:49:04,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:49:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:49:04,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:04,374 INFO L87 Difference]: Start difference. First operand 179 states and 239 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 04:49:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:04,476 INFO L93 Difference]: Finished difference Result 393 states and 545 transitions. [2022-12-14 04:49:04,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:49:04,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-12-14 04:49:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:04,478 INFO L225 Difference]: With dead ends: 393 [2022-12-14 04:49:04,478 INFO L226 Difference]: Without dead ends: 232 [2022-12-14 04:49:04,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:49:04,479 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 59 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:04,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 414 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:49:04,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-12-14 04:49:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2022-12-14 04:49:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 137 states have (on average 1.364963503649635) internal successors, (187), 139 states have internal predecessors, (187), 68 states have call successors, (68), 21 states have call predecessors, (68), 21 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-12-14 04:49:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 322 transitions. [2022-12-14 04:49:04,494 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 322 transitions. Word has length 77 [2022-12-14 04:49:04,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:04,494 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 322 transitions. [2022-12-14 04:49:04,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 04:49:04,494 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 322 transitions. [2022-12-14 04:49:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 04:49:04,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:04,496 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:49:04,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 04:49:04,496 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:49:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:04,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1497104382, now seen corresponding path program 1 times [2022-12-14 04:49:04,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:04,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865876509] [2022-12-14 04:49:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:04,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:49:04,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:04,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865876509] [2022-12-14 04:49:04,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865876509] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:04,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370977797] [2022-12-14 04:49:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:04,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:04,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:04,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:04,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:49:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:04,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:49:04,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:49:04,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:49:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:49:04,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370977797] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:49:04,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [224506045] [2022-12-14 04:49:04,972 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-12-14 04:49:04,972 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:49:04,975 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:49:04,979 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:49:04,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:49:31,591 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 04:49:31,906 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 04:49:32,220 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-12-14 04:49:34,021 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2022-12-14 04:49:37,525 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 239 for LOIs [2022-12-14 04:49:37,567 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 266 for LOIs [2022-12-14 04:49:42,805 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 438 for LOIs [2022-12-14 04:49:43,058 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-12-14 04:49:43,100 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-12-14 04:49:45,063 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 04:49:45,103 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:50:37,796 WARN L233 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 480 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:51:19,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [224506045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:51:19,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:51:19,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-12-14 04:51:19,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772041159] [2022-12-14 04:51:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:51:19,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 04:51:19,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:51:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 04:51:19,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2713, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 04:51:19,447 INFO L87 Difference]: Start difference. First operand 227 states and 322 transitions. Second operand has 49 states, 32 states have (on average 1.21875) internal successors, (39), 29 states have internal predecessors, (39), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-14 04:51:47,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:51:47,061 INFO L93 Difference]: Finished difference Result 545 states and 806 transitions. [2022-12-14 04:51:47,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-14 04:51:47,062 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.21875) internal successors, (39), 29 states have internal predecessors, (39), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 78 [2022-12-14 04:51:47,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:51:47,064 INFO L225 Difference]: With dead ends: 545 [2022-12-14 04:51:47,064 INFO L226 Difference]: Without dead ends: 336 [2022-12-14 04:51:47,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 102.7s TimeCoverageRelationStatistics Valid=173, Invalid=3133, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 04:51:47,066 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 138 mSDsluCounter, 5486 mSDsCounter, 0 mSdLazyCounter, 6938 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 5709 SdHoareTripleChecker+Invalid, 6957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 6938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:51:47,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 5709 Invalid, 6957 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [19 Valid, 6938 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2022-12-14 04:51:47,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-12-14 04:51:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 293. [2022-12-14 04:51:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 185 states have (on average 1.3567567567567567) internal successors, (251), 188 states have internal predecessors, (251), 79 states have call successors, (79), 30 states have call predecessors, (79), 28 states have return successors, (79), 74 states have call predecessors, (79), 78 states have call successors, (79) [2022-12-14 04:51:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 409 transitions. [2022-12-14 04:51:47,162 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 409 transitions. Word has length 78 [2022-12-14 04:51:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:51:47,162 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 409 transitions. [2022-12-14 04:51:47,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.21875) internal successors, (39), 29 states have internal predecessors, (39), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-14 04:51:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 409 transitions. [2022-12-14 04:51:47,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 04:51:47,164 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:51:47,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:51:47,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:51:47,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-14 04:51:47,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:51:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:51:47,368 INFO L85 PathProgramCache]: Analyzing trace with hash 236781769, now seen corresponding path program 1 times [2022-12-14 04:51:47,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:51:47,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664170944] [2022-12-14 04:51:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:51:47,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:51:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:51:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:51:47,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:51:47,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664170944] [2022-12-14 04:51:47,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664170944] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:51:47,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907785932] [2022-12-14 04:51:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:51:47,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:51:47,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:51:47,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:51:47,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:51:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:51:47,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:51:47,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:51:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:51:47,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:51:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 04:51:47,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907785932] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:51:47,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [775713601] [2022-12-14 04:51:47,758 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 04:51:47,759 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:51:47,759 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:51:47,759 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:51:47,759 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:52:13,141 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 04:52:13,462 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 04:52:13,768 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-12-14 04:52:15,485 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 256 for LOIs [2022-12-14 04:52:19,097 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 259 for LOIs [2022-12-14 04:52:19,148 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 266 for LOIs [2022-12-14 04:52:34,018 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 438 for LOIs [2022-12-14 04:52:34,274 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-12-14 04:52:34,319 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 04:52:34,359 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-12-14 04:52:36,355 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 438 for LOIs [2022-12-14 04:52:36,621 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:53:16,842 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 565 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:53:35,049 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 480 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:54:29,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [775713601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:54:29,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:54:29,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-12-14 04:54:29,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624435951] [2022-12-14 04:54:29,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:54:29,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-14 04:54:29,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:54:29,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-14 04:54:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3359, Unknown=0, NotChecked=0, Total=3540 [2022-12-14 04:54:29,560 INFO L87 Difference]: Start difference. First operand 293 states and 409 transitions. Second operand has 55 states, 37 states have (on average 1.135135135135135) internal successors, (42), 33 states have internal predecessors, (42), 17 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 04:54:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:54:55,037 INFO L93 Difference]: Finished difference Result 420 states and 586 transitions. [2022-12-14 04:54:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-14 04:54:55,037 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 37 states have (on average 1.135135135135135) internal successors, (42), 33 states have internal predecessors, (42), 17 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 83 [2022-12-14 04:54:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:54:55,039 INFO L225 Difference]: With dead ends: 420 [2022-12-14 04:54:55,039 INFO L226 Difference]: Without dead ends: 342 [2022-12-14 04:54:55,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 120.5s TimeCoverageRelationStatistics Valid=205, Invalid=3827, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 04:54:55,041 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 146 mSDsluCounter, 4787 mSDsCounter, 0 mSdLazyCounter, 6335 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5005 SdHoareTripleChecker+Invalid, 6344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 6335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-12-14 04:54:55,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5005 Invalid, 6344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 6335 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2022-12-14 04:54:55,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-12-14 04:54:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 297. [2022-12-14 04:54:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 188 states have (on average 1.351063829787234) internal successors, (254), 191 states have internal predecessors, (254), 79 states have call successors, (79), 31 states have call predecessors, (79), 29 states have return successors, (79), 74 states have call predecessors, (79), 78 states have call successors, (79) [2022-12-14 04:54:55,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 412 transitions. [2022-12-14 04:54:55,147 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 412 transitions. Word has length 83 [2022-12-14 04:54:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:54:55,148 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 412 transitions. [2022-12-14 04:54:55,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 37 states have (on average 1.135135135135135) internal successors, (42), 33 states have internal predecessors, (42), 17 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 04:54:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 412 transitions. [2022-12-14 04:54:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 04:54:55,149 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:54:55,149 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 04:54:55,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:54:55,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:54:55,351 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:54:55,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:54:55,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1886558721, now seen corresponding path program 1 times [2022-12-14 04:54:55,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:54:55,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23391542] [2022-12-14 04:54:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:55,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:54:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:54:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 04:54:55,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:54:55,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23391542] [2022-12-14 04:54:55,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23391542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:54:55,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:54:55,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:54:55,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479986117] [2022-12-14 04:54:55,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:54:55,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:54:55,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:54:55,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:54:55,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:54:55,447 INFO L87 Difference]: Start difference. First operand 297 states and 412 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 04:54:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:54:55,789 INFO L93 Difference]: Finished difference Result 696 states and 1004 transitions. [2022-12-14 04:54:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:54:55,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 83 [2022-12-14 04:54:55,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:54:55,791 INFO L225 Difference]: With dead ends: 696 [2022-12-14 04:54:55,792 INFO L226 Difference]: Without dead ends: 425 [2022-12-14 04:54:55,792 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 04:54:55,793 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 57 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:54:55,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 426 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:54:55,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-12-14 04:54:55,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 418. [2022-12-14 04:54:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 278 states have (on average 1.4172661870503598) internal successors, (394), 281 states have internal predecessors, (394), 110 states have call successors, (110), 31 states have call predecessors, (110), 29 states have return successors, (110), 105 states have call predecessors, (110), 109 states have call successors, (110) [2022-12-14 04:54:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 614 transitions. [2022-12-14 04:54:55,942 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 614 transitions. Word has length 83 [2022-12-14 04:54:55,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:54:55,942 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 614 transitions. [2022-12-14 04:54:55,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 04:54:55,943 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 614 transitions. [2022-12-14 04:54:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 04:54:55,944 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:54:55,944 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 04:54:55,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 04:54:55,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:54:55,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:54:55,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1301301174, now seen corresponding path program 1 times [2022-12-14 04:54:55,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:54:55,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642807901] [2022-12-14 04:54:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:55,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:54:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:54:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 04:54:56,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:54:56,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642807901] [2022-12-14 04:54:56,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642807901] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:54:56,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509477170] [2022-12-14 04:54:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:56,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:54:56,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:54:56,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:54:56,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:54:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:54:56,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:54:56,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:54:56,252 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 04:54:56,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:54:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 04:54:56,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509477170] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:54:56,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1029804574] [2022-12-14 04:54:56,302 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-12-14 04:54:56,302 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:54:56,303 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:54:56,303 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:54:56,303 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:55:31,039 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 04:55:31,847 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 04:55:32,333 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-12-14 04:55:34,023 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 252 for LOIs [2022-12-14 04:55:37,879 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 268 for LOIs [2022-12-14 04:55:37,936 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 262 for LOIs [2022-12-14 04:55:41,049 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-12-14 04:55:41,084 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2022-12-14 04:55:41,125 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-12-14 04:55:46,259 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-12-14 04:55:46,298 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:56:25,056 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 588 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:56:40,808 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:57:14,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1029804574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:57:14,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:57:14,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-12-14 04:57:14,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579271448] [2022-12-14 04:57:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:57:14,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-14 04:57:14,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:57:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-14 04:57:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3133, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 04:57:14,028 INFO L87 Difference]: Start difference. First operand 418 states and 614 transitions. Second operand has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 04:58:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:58:00,973 INFO L93 Difference]: Finished difference Result 884 states and 1350 transitions. [2022-12-14 04:58:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-14 04:58:00,974 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 84 [2022-12-14 04:58:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:58:00,978 INFO L225 Difference]: With dead ends: 884 [2022-12-14 04:58:00,978 INFO L226 Difference]: Without dead ends: 575 [2022-12-14 04:58:00,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 114.1s TimeCoverageRelationStatistics Valid=273, Invalid=4557, Unknown=0, NotChecked=0, Total=4830 [2022-12-14 04:58:00,982 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 262 mSDsluCounter, 4443 mSDsCounter, 0 mSdLazyCounter, 6708 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 4659 SdHoareTripleChecker+Invalid, 6744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 6708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-12-14 04:58:00,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 4659 Invalid, 6744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 6708 Invalid, 0 Unknown, 0 Unchecked, 19.8s Time] [2022-12-14 04:58:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-12-14 04:58:01,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 491. [2022-12-14 04:58:01,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 330 states have (on average 1.406060606060606) internal successors, (464), 336 states have internal predecessors, (464), 124 states have call successors, (124), 40 states have call predecessors, (124), 36 states have return successors, (125), 114 states have call predecessors, (125), 123 states have call successors, (125) [2022-12-14 04:58:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 713 transitions. [2022-12-14 04:58:01,261 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 713 transitions. Word has length 84 [2022-12-14 04:58:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:58:01,261 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 713 transitions. [2022-12-14 04:58:01,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 04:58:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 713 transitions. [2022-12-14 04:58:01,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 04:58:01,263 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:58:01,263 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 04:58:01,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 04:58:01,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:01,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:58:01,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:58:01,466 INFO L85 PathProgramCache]: Analyzing trace with hash -97740803, now seen corresponding path program 1 times [2022-12-14 04:58:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:58:01,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567120984] [2022-12-14 04:58:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:01,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:58:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 04:58:01,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:58:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567120984] [2022-12-14 04:58:01,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567120984] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:58:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131242325] [2022-12-14 04:58:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:58:01,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:58:01,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:58:01,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:58:01,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:58:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:58:01,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:58:01,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:58:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 04:58:01,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:58:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 04:58:01,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131242325] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:58:01,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [402374978] [2022-12-14 04:58:01,863 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-12-14 04:58:01,864 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:58:01,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:58:01,864 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:58:01,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:58:35,447 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 04:58:35,754 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 04:58:36,068 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-12-14 04:58:37,759 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-12-14 04:58:41,187 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 238 for LOIs [2022-12-14 04:58:41,227 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 262 for LOIs [2022-12-14 04:58:46,974 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2022-12-14 04:58:47,009 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2022-12-14 04:58:47,049 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-12-14 04:58:47,089 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-12-14 04:58:49,037 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 244 for LOIs [2022-12-14 04:58:49,077 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:59:24,922 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 588 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 04:59:41,100 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:00:25,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [402374978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:00:25,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:00:25,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [4, 4, 4] total 64 [2022-12-14 05:00:25,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823849323] [2022-12-14 05:00:25,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:00:25,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-14 05:00:25,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:00:25,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-14 05:00:25,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=3827, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 05:00:25,575 INFO L87 Difference]: Start difference. First operand 491 states and 713 transitions. Second operand has 59 states, 40 states have (on average 1.125) internal successors, (45), 36 states have internal predecessors, (45), 18 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-12-14 05:01:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:01:12,983 INFO L93 Difference]: Finished difference Result 661 states and 963 transitions. [2022-12-14 05:01:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-14 05:01:12,984 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 40 states have (on average 1.125) internal successors, (45), 36 states have internal predecessors, (45), 18 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 89 [2022-12-14 05:01:12,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:01:12,986 INFO L225 Difference]: With dead ends: 661 [2022-12-14 05:01:12,986 INFO L226 Difference]: Without dead ends: 583 [2022-12-14 05:01:12,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 121.4s TimeCoverageRelationStatistics Valid=305, Invalid=5395, Unknown=0, NotChecked=0, Total=5700 [2022-12-14 05:01:12,988 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 168 mSDsluCounter, 5246 mSDsCounter, 0 mSdLazyCounter, 7974 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 5457 SdHoareTripleChecker+Invalid, 7986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 7974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:01:12,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 5457 Invalid, 7986 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12 Valid, 7974 Invalid, 0 Unknown, 0 Unchecked, 21.7s Time] [2022-12-14 05:01:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-12-14 05:01:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 434. [2022-12-14 05:01:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 290 states have (on average 1.4206896551724137) internal successors, (412), 295 states have internal predecessors, (412), 113 states have call successors, (113), 32 states have call predecessors, (113), 30 states have return successors, (113), 106 states have call predecessors, (113), 112 states have call successors, (113) [2022-12-14 05:01:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 638 transitions. [2022-12-14 05:01:13,282 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 638 transitions. Word has length 89 [2022-12-14 05:01:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:01:13,283 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 638 transitions. [2022-12-14 05:01:13,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 40 states have (on average 1.125) internal successors, (45), 36 states have internal predecessors, (45), 18 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-12-14 05:01:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 638 transitions. [2022-12-14 05:01:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 05:01:13,284 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:01:13,284 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:01:13,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:01:13,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:01:13,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:01:13,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:01:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1215056929, now seen corresponding path program 1 times [2022-12-14 05:01:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:01:13,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816436522] [2022-12-14 05:01:13,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:01:13,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:01:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:01:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 05:01:13,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:01:13,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816436522] [2022-12-14 05:01:13,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816436522] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:01:13,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782909599] [2022-12-14 05:01:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:01:13,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:01:13,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:01:13,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:01:13,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e5c96b2-4c3a-4586-932b-b876c100502c/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:01:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:01:13,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:01:13,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:01:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 05:01:13,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:01:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 05:01:13,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782909599] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:01:13,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1014565285] [2022-12-14 05:01:13,881 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-12-14 05:01:13,881 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:01:13,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:01:13,882 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:01:13,882 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:01:58,273 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 05:01:58,592 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-12-14 05:01:58,654 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-12-14 05:01:58,719 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-12-14 05:01:58,789 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:01:59,093 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:02:41,018 WARN L233 SmtUtils]: Spent 10.46s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:02:51,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1014565285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:02:51,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:02:51,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 05:02:51,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661742485] [2022-12-14 05:02:51,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:02:51,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 05:02:51,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:02:51,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 05:02:51,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 05:02:51,835 INFO L87 Difference]: Start difference. First operand 434 states and 638 transitions. Second operand has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 05:02:58,401 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 580 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)