./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/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_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/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_e7c438af-8834-47a7-9df8-b20b243cb7cb/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 13f72d33ad8dc1f394ba6b36d4d28c51e0dd0afffaf225b08b0adb7c8b4dde17 --- 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 12:34:48,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:34:48,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:34:48,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:34:48,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:34:48,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:34:48,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:34:48,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:34:48,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:34:48,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:34:48,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:34:48,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:34:48,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:34:48,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:34:48,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:34:48,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:34:48,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:34:48,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:34:48,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:34:48,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:34:48,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:34:48,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:34:48,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:34:48,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:34:48,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:34:48,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:34:48,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:34:48,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:34:48,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:34:48,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:34:48,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:34:48,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:34:48,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:34:48,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:34:48,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:34:48,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:34:48,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:34:48,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:34:48,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:34:48,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:34:48,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:34:48,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:34:48,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:34:48,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:34:48,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:34:48,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:34:48,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:34:48,867 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:34:48,867 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:34:48,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:34:48,868 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:34:48,868 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:34:48,868 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:34:48,868 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:34:48,868 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:34:48,869 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:34:48,869 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:34:48,869 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:34:48,869 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:34:48,869 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:34:48,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:34:48,870 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:34:48,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:34:48,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:34:48,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:34:48,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:34:48,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:34:48,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:34:48,872 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:34:48,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:34:48,872 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:34:48,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:34:48,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:34:48,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:34:48,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:34:48,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:34:48,873 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:34:48,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:34:48,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:34:48,874 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:34:48,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:34:48,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:34:48,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:34:48,875 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_e7c438af-8834-47a7-9df8-b20b243cb7cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13f72d33ad8dc1f394ba6b36d4d28c51e0dd0afffaf225b08b0adb7c8b4dde17 [2022-12-14 12:34:49,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:34:49,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:34:49,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:34:49,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:34:49,079 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:34:49,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec0_product21.cil.c [2022-12-14 12:34:51,756 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:34:51,961 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:34:51,962 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/sv-benchmarks/c/product-lines/email_spec0_product21.cil.c [2022-12-14 12:34:51,974 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/data/0fb7ec549/f2a7a015fcd34680bb997dd180f3c323/FLAG0c406345a [2022-12-14 12:34:51,984 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/data/0fb7ec549/f2a7a015fcd34680bb997dd180f3c323 [2022-12-14 12:34:51,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:34:51,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:34:51,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:34:51,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:34:51,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:34:51,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:34:51" (1/1) ... [2022-12-14 12:34:51,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e19318f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:51, skipping insertion in model container [2022-12-14 12:34:51,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:34:51" (1/1) ... [2022-12-14 12:34:51,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:34:52,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:34:52,304 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_e7c438af-8834-47a7-9df8-b20b243cb7cb/sv-benchmarks/c/product-lines/email_spec0_product21.cil.c[44895,44908] [2022-12-14 12:34:52,338 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,362 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,363 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,366 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,382 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,388 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,388 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,389 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,398 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:34:52,419 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:34:52,481 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_e7c438af-8834-47a7-9df8-b20b243cb7cb/sv-benchmarks/c/product-lines/email_spec0_product21.cil.c[44895,44908] [2022-12-14 12:34:52,487 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,489 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,490 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,492 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,496 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,498 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,499 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,500 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,506 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:52,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:34:52,545 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:34:52,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52 WrapperNode [2022-12-14 12:34:52,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:34:52,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:34:52,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:34:52,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:34:52,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,603 INFO L138 Inliner]: procedures = 128, calls = 214, calls flagged for inlining = 56, calls inlined = 53, statements flattened = 1049 [2022-12-14 12:34:52,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:34:52,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:34:52,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:34:52,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:34:52,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,636 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:34:52,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:34:52,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:34:52,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:34:52,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (1/1) ... [2022-12-14 12:34:52,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:34:52,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:34:52,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:34:52,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:34:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 12:34:52,713 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 12:34:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 12:34:52,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 12:34:52,713 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 12:34:52,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 12:34:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 12:34:52,714 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 12:34:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 12:34:52,714 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 12:34:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 12:34:52,714 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 12:34:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 12:34:52,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 12:34:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 12:34:52,715 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 12:34:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 12:34:52,715 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 12:34:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 12:34:52,716 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 12:34:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 12:34:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 12:34:52,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 12:34:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:34:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 12:34:52,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 12:34:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 12:34:52,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 12:34:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 12:34:52,717 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 12:34:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 12:34:52,717 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 12:34:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-12-14 12:34:52,717 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-12-14 12:34:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 12:34:52,717 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 12:34:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 12:34:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 12:34:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 12:34:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 12:34:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 12:34:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 12:34:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:34:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 12:34:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 12:34:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 12:34:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 12:34:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:34:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:34:52,878 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:34:52,880 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:34:53,541 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:34:54,002 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:34:54,002 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:34:54,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:34:54 BoogieIcfgContainer [2022-12-14 12:34:54,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:34:54,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:34:54,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:34:54,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:34:54,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:34:51" (1/3) ... [2022-12-14 12:34:54,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48084e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:34:54, skipping insertion in model container [2022-12-14 12:34:54,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:52" (2/3) ... [2022-12-14 12:34:54,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48084e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:34:54, skipping insertion in model container [2022-12-14 12:34:54,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:34:54" (3/3) ... [2022-12-14 12:34:54,010 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product21.cil.c [2022-12-14 12:34:54,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:34:54,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:34:54,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:34:54,067 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;@da67b9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:34:54,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:34:54,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 110 states have internal predecessors, (139), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-12-14 12:34:54,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 12:34:54,081 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:34:54,081 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:34:54,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:34:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:34:54,086 INFO L85 PathProgramCache]: Analyzing trace with hash -874497245, now seen corresponding path program 1 times [2022-12-14 12:34:54,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:34:54,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746458235] [2022-12-14 12:34:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:34:54,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:34:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:34:54,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:34:54,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746458235] [2022-12-14 12:34:54,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746458235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:34:54,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:34:54,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:34:54,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432322306] [2022-12-14 12:34:54,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:34:54,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:34:54,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:34:54,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:34:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:34:54,355 INFO L87 Difference]: Start difference. First operand has 186 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 110 states have internal predecessors, (139), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 12:34:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:34:54,475 INFO L93 Difference]: Finished difference Result 280 states and 377 transitions. [2022-12-14 12:34:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:34:54,478 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 88 [2022-12-14 12:34:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:34:54,488 INFO L225 Difference]: With dead ends: 280 [2022-12-14 12:34:54,489 INFO L226 Difference]: Without dead ends: 183 [2022-12-14 12:34:54,492 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 12:34:54,496 INFO L413 NwaCegarLoop]: 213 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, 213 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 12:34:54,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:34:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-12-14 12:34:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-12-14 12:34:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 107 states have internal predecessors, (133), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-12-14 12:34:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 246 transitions. [2022-12-14 12:34:54,552 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 246 transitions. Word has length 88 [2022-12-14 12:34:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:34:54,554 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 246 transitions. [2022-12-14 12:34:54,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 12:34:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 246 transitions. [2022-12-14 12:34:54,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 12:34:54,558 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:34:54,558 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:34:54,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:34:54,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:34:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:34:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash -147209449, now seen corresponding path program 1 times [2022-12-14 12:34:54,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:34:54,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431813655] [2022-12-14 12:34:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:34:54,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:34:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:34:54,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:34:54,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431813655] [2022-12-14 12:34:54,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431813655] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:34:54,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:34:54,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:34:54,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718836671] [2022-12-14 12:34:54,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:34:54,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:34:54,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:34:54,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:34:54,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:34:54,757 INFO L87 Difference]: Start difference. First operand 183 states and 246 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 12:34:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:34:54,879 INFO L93 Difference]: Finished difference Result 276 states and 362 transitions. [2022-12-14 12:34:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:34:54,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 89 [2022-12-14 12:34:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:34:54,882 INFO L225 Difference]: With dead ends: 276 [2022-12-14 12:34:54,882 INFO L226 Difference]: Without dead ends: 185 [2022-12-14 12:34:54,883 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 12:34:54,884 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 0 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 419 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 12:34:54,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 419 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:34:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-12-14 12:34:54,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-12-14 12:34:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 105 states have (on average 1.2857142857142858) internal successors, (135), 109 states have internal predecessors, (135), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-12-14 12:34:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 248 transitions. [2022-12-14 12:34:54,896 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 248 transitions. Word has length 89 [2022-12-14 12:34:54,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:34:54,896 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 248 transitions. [2022-12-14 12:34:54,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 12:34:54,896 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 248 transitions. [2022-12-14 12:34:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 12:34:54,898 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:34:54,898 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 12:34:54,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:34:54,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:34:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:34:54,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1223715493, now seen corresponding path program 1 times [2022-12-14 12:34:54,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:34:54,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328952642] [2022-12-14 12:34:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:34:54,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:34:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:54,977 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 12:34:54,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:34:54,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328952642] [2022-12-14 12:34:54,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328952642] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:34:54,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:34:54,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:34:54,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904819287] [2022-12-14 12:34:54,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:34:54,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:34:54,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:34:54,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:34:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:34:54,979 INFO L87 Difference]: Start difference. First operand 185 states and 248 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 12:34:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:34:55,083 INFO L93 Difference]: Finished difference Result 405 states and 563 transitions. [2022-12-14 12:34:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:34:55,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-12-14 12:34:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:34:55,086 INFO L225 Difference]: With dead ends: 405 [2022-12-14 12:34:55,086 INFO L226 Difference]: Without dead ends: 238 [2022-12-14 12:34:55,087 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 12:34:55,088 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 59 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:34:55,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 433 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:34:55,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-12-14 12:34:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 233. [2022-12-14 12:34:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 139 states have (on average 1.3669064748201438) internal successors, (190), 143 states have internal predecessors, (190), 71 states have call successors, (71), 22 states have call predecessors, (71), 22 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-12-14 12:34:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 331 transitions. [2022-12-14 12:34:55,103 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 331 transitions. Word has length 83 [2022-12-14 12:34:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:34:55,103 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 331 transitions. [2022-12-14 12:34:55,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 12:34:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 331 transitions. [2022-12-14 12:34:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 12:34:55,105 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:34:55,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:34:55,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:34:55,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:34:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:34:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash 713175035, now seen corresponding path program 1 times [2022-12-14 12:34:55,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:34:55,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048194229] [2022-12-14 12:34:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:34:55,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:34:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:34:55,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:34:55,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048194229] [2022-12-14 12:34:55,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048194229] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:34:55,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759805785] [2022-12-14 12:34:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:34:55,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:34:55,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:34:55,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:34:55,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:34:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:55,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:34:55,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:34:55,540 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:34:55,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:34:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:34:55,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759805785] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:34:55,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2029497091] [2022-12-14 12:34:55,627 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-12-14 12:34:55,627 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:34:55,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:34:55,636 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:34:55,637 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:35:20,825 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 12:35:21,145 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 12:35:21,468 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:35:58,413 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 581 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:36:08,206 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 566 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:36:14,193 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 562 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:36:15,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2029497091] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:36:15,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:36:15,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-12-14 12:36:15,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228716354] [2022-12-14 12:36:15,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:36:15,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 12:36:15,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:36:15,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 12:36:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 12:36:15,025 INFO L87 Difference]: Start difference. First operand 233 states and 331 transitions. Second operand has 21 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-14 12:36:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:36:20,768 INFO L93 Difference]: Finished difference Result 513 states and 762 transitions. [2022-12-14 12:36:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 12:36:20,769 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 95 [2022-12-14 12:36:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:36:20,771 INFO L225 Difference]: With dead ends: 513 [2022-12-14 12:36:20,771 INFO L226 Difference]: Without dead ends: 298 [2022-12-14 12:36:20,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 53.5s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 12:36:20,772 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 86 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:36:20,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 3214 Invalid, 1923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1914 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-12-14 12:36:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-12-14 12:36:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 256. [2022-12-14 12:36:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 161 states have (on average 1.3850931677018634) internal successors, (223), 165 states have internal predecessors, (223), 71 states have call successors, (71), 23 states have call predecessors, (71), 23 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-12-14 12:36:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 364 transitions. [2022-12-14 12:36:20,856 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 364 transitions. Word has length 95 [2022-12-14 12:36:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:36:20,856 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 364 transitions. [2022-12-14 12:36:20,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-14 12:36:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 364 transitions. [2022-12-14 12:36:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 12:36:20,858 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:36:20,858 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:36:20,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:36:21,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:36:21,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:36:21,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:36:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1338348380, now seen corresponding path program 1 times [2022-12-14 12:36:21,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:36:21,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035179743] [2022-12-14 12:36:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:36:21,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:36:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:36:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 12:36:21,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:36:21,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035179743] [2022-12-14 12:36:21,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035179743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:36:21,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:36:21,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:36:21,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328380199] [2022-12-14 12:36:21,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:36:21,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:36:21,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:36:21,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:36:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:36:21,130 INFO L87 Difference]: Start difference. First operand 256 states and 364 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 12:36:21,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:36:21,412 INFO L93 Difference]: Finished difference Result 615 states and 908 transitions. [2022-12-14 12:36:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:36:21,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2022-12-14 12:36:21,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:36:21,416 INFO L225 Difference]: With dead ends: 615 [2022-12-14 12:36:21,416 INFO L226 Difference]: Without dead ends: 383 [2022-12-14 12:36:21,417 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 12:36:21,418 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 57 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 442 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 12:36:21,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 442 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:36:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-12-14 12:36:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 378. [2022-12-14 12:36:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 252 states have (on average 1.4404761904761905) internal successors, (363), 256 states have internal predecessors, (363), 102 states have call successors, (102), 23 states have call predecessors, (102), 23 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2022-12-14 12:36:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 566 transitions. [2022-12-14 12:36:21,552 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 566 transitions. Word has length 100 [2022-12-14 12:36:21,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:36:21,553 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 566 transitions. [2022-12-14 12:36:21,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 12:36:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 566 transitions. [2022-12-14 12:36:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 12:36:21,554 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:36:21,555 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:36:21,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:36:21,555 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:36:21,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:36:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1935262969, now seen corresponding path program 1 times [2022-12-14 12:36:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:36:21,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449625599] [2022-12-14 12:36:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:36:21,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:36:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:36:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 12:36:21,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:36:21,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449625599] [2022-12-14 12:36:21,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449625599] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:36:21,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765983810] [2022-12-14 12:36:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:36:21,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:36:21,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:36:21,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:36:21,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:36:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:36:21,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:36:21,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:36:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 12:36:21,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:36:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 12:36:21,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765983810] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:36:21,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2145801899] [2022-12-14 12:36:21,936 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2022-12-14 12:36:21,936 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:36:21,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:36:21,937 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:36:21,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:36:53,758 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 12:36:54,059 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 250 for LOIs [2022-12-14 12:36:55,613 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 12:36:55,903 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 252 for LOIs [2022-12-14 12:36:56,516 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 232 for LOIs [2022-12-14 12:36:56,557 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2022-12-14 12:36:56,594 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 222 for LOIs [2022-12-14 12:36:56,628 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:37:39,830 WARN L233 SmtUtils]: Spent 11.50s on a formula simplification. DAG size of input: 587 DAG size of output: 454 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:37:59,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2145801899] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:37:59,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:37:59,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [4, 4, 4] total 46 [2022-12-14 12:37:59,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195566837] [2022-12-14 12:37:59,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:37:59,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 12:37:59,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:59,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 12:37:59,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1929, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 12:37:59,100 INFO L87 Difference]: Start difference. First operand 378 states and 566 transitions. Second operand has 41 states, 28 states have (on average 1.75) internal successors, (49), 26 states have internal predecessors, (49), 13 states have call successors, (22), 8 states have call predecessors, (22), 6 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2022-12-14 12:38:10,497 WARN L233 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 563 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:38:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:38:40,155 INFO L93 Difference]: Finished difference Result 829 states and 1281 transitions. [2022-12-14 12:38:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-14 12:38:40,156 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 28 states have (on average 1.75) internal successors, (49), 26 states have internal predecessors, (49), 13 states have call successors, (22), 8 states have call predecessors, (22), 6 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) Word has length 101 [2022-12-14 12:38:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:38:40,160 INFO L225 Difference]: With dead ends: 829 [2022-12-14 12:38:40,160 INFO L226 Difference]: Without dead ends: 514 [2022-12-14 12:38:40,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 90.4s TimeCoverageRelationStatistics Valid=234, Invalid=2958, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 12:38:40,163 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 235 mSDsluCounter, 4300 mSDsCounter, 0 mSdLazyCounter, 4743 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 4522 SdHoareTripleChecker+Invalid, 4775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:38:40,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 4522 Invalid, 4775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 4743 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-12-14 12:38:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-12-14 12:38:40,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 411. [2022-12-14 12:38:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 273 states have (on average 1.4285714285714286) internal successors, (390), 279 states have internal predecessors, (390), 110 states have call successors, (110), 29 states have call predecessors, (110), 27 states have return successors, (109), 104 states have call predecessors, (109), 109 states have call successors, (109) [2022-12-14 12:38:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 609 transitions. [2022-12-14 12:38:40,370 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 609 transitions. Word has length 101 [2022-12-14 12:38:40,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:38:40,371 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 609 transitions. [2022-12-14 12:38:40,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 28 states have (on average 1.75) internal successors, (49), 26 states have internal predecessors, (49), 13 states have call successors, (22), 8 states have call predecessors, (22), 6 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2022-12-14 12:38:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 609 transitions. [2022-12-14 12:38:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-14 12:38:40,372 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:38:40,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:38:40,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:38:40,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:38:40,574 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:38:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:38:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -312745777, now seen corresponding path program 1 times [2022-12-14 12:38:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:38:40,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413705084] [2022-12-14 12:38:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:38:40,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:38:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:38:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:38:40,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:38:40,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413705084] [2022-12-14 12:38:40,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413705084] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:38:40,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648363920] [2022-12-14 12:38:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:38:40,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:38:40,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:38:40,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:38:40,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:38:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:38:40,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:38:40,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:38:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:38:40,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:38:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:38:41,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648363920] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:38:41,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [322899030] [2022-12-14 12:38:41,037 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-12-14 12:38:41,037 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:38:41,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:38:41,038 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:38:41,038 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:39:48,866 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 12:39:49,160 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 229 for LOIs [2022-12-14 12:39:49,219 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 228 for LOIs [2022-12-14 12:39:49,280 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 234 for LOIs [2022-12-14 12:39:50,570 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-12-14 12:39:50,627 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 12:39:50,928 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 234 for LOIs [2022-12-14 12:39:51,439 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 216 for LOIs [2022-12-14 12:39:51,471 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 216 for LOIs [2022-12-14 12:39:51,504 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 208 for LOIs [2022-12-14 12:39:51,536 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:40:30,553 WARN L233 SmtUtils]: Spent 10.74s on a formula simplification. DAG size of input: 618 DAG size of output: 498 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:40:52,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [322899030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:40:52,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:40:52,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [4, 4, 4] total 51 [2022-12-14 12:40:52,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497366380] [2022-12-14 12:40:52,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:40:52,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-14 12:40:52,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:40:52,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-14 12:40:52,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2416, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 12:40:52,131 INFO L87 Difference]: Start difference. First operand 411 states and 609 transitions. Second operand has 46 states, 28 states have (on average 1.75) internal successors, (49), 26 states have internal predecessors, (49), 15 states have call successors, (24), 11 states have call predecessors, (24), 9 states have return successors, (21), 13 states have call predecessors, (21), 13 states have call successors, (21) [2022-12-14 12:41:28,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:41:28,576 INFO L93 Difference]: Finished difference Result 857 states and 1303 transitions. [2022-12-14 12:41:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 12:41:28,577 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 28 states have (on average 1.75) internal successors, (49), 26 states have internal predecessors, (49), 15 states have call successors, (24), 11 states have call predecessors, (24), 9 states have return successors, (21), 13 states have call predecessors, (21), 13 states have call successors, (21) Word has length 104 [2022-12-14 12:41:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:41:28,579 INFO L225 Difference]: With dead ends: 857 [2022-12-14 12:41:28,579 INFO L226 Difference]: Without dead ends: 542 [2022-12-14 12:41:28,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 78.2s TimeCoverageRelationStatistics Valid=211, Invalid=3571, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 12:41:28,581 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 172 mSDsluCounter, 5522 mSDsCounter, 0 mSdLazyCounter, 6767 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 5783 SdHoareTripleChecker+Invalid, 6795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:41:28,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 5783 Invalid, 6795 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 6767 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2022-12-14 12:41:28,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-12-14 12:41:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 446. [2022-12-14 12:41:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 301 states have (on average 1.4252491694352158) internal successors, (429), 308 states have internal predecessors, (429), 114 states have call successors, (114), 32 states have call predecessors, (114), 30 states have return successors, (113), 107 states have call predecessors, (113), 113 states have call successors, (113) [2022-12-14 12:41:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 656 transitions. [2022-12-14 12:41:28,849 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 656 transitions. Word has length 104 [2022-12-14 12:41:28,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:41:28,849 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 656 transitions. [2022-12-14 12:41:28,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 28 states have (on average 1.75) internal successors, (49), 26 states have internal predecessors, (49), 15 states have call successors, (24), 11 states have call predecessors, (24), 9 states have return successors, (21), 13 states have call predecessors, (21), 13 states have call successors, (21) [2022-12-14 12:41:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 656 transitions. [2022-12-14 12:41:28,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 12:41:28,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:41:28,851 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, 1] [2022-12-14 12:41:28,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:41:29,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:41:29,051 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:41:29,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:41:29,052 INFO L85 PathProgramCache]: Analyzing trace with hash 989849255, now seen corresponding path program 1 times [2022-12-14 12:41:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:41:29,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039417456] [2022-12-14 12:41:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:41:29,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:41:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:41:29,126 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 12:41:29,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:41:29,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039417456] [2022-12-14 12:41:29,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039417456] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:41:29,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79791367] [2022-12-14 12:41:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:41:29,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:41:29,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:41:29,128 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:41:29,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:41:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:41:29,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:41:29,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:41:29,365 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 12:41:29,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:41:29,417 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 12:41:29,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79791367] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:41:29,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1993717936] [2022-12-14 12:41:29,421 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-12-14 12:41:29,421 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:41:29,421 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:41:29,422 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:41:29,422 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:41:59,514 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 12:41:59,837 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 12:42:00,141 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 250 for LOIs [2022-12-14 12:42:01,647 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2022-12-14 12:42:02,322 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 259 for LOIs [2022-12-14 12:42:14,037 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 439 for LOIs [2022-12-14 12:42:14,620 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2022-12-14 12:42:14,657 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 451 for LOIs [2022-12-14 12:42:15,323 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 222 for LOIs [2022-12-14 12:42:15,357 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:42:58,745 WARN L233 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 587 DAG size of output: 454 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:43:28,820 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 439 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:43:34,894 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 458 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:43:57,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1993717936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:43:57,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:43:57,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-12-14 12:43:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264264837] [2022-12-14 12:43:57,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:43:57,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-14 12:43:57,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:43:57,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-14 12:43:57,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3130, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 12:43:57,895 INFO L87 Difference]: Start difference. First operand 446 states and 656 transitions. Second operand has 53 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 17 states have call successors, (19), 10 states have call predecessors, (19), 7 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-12-14 12:44:08,962 WARN L233 SmtUtils]: Spent 9.14s on a formula simplification. DAG size of input: 563 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:44:26,644 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 580 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:44:47,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:44:47,170 INFO L93 Difference]: Finished difference Result 666 states and 971 transitions. [2022-12-14 12:44:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-14 12:44:47,171 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 17 states have call successors, (19), 10 states have call predecessors, (19), 7 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) Word has length 90 [2022-12-14 12:44:47,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:44:47,173 INFO L225 Difference]: With dead ends: 666 [2022-12-14 12:44:47,173 INFO L226 Difference]: Without dead ends: 582 [2022-12-14 12:44:47,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 213 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1159 ImplicationChecksByTransitivity, 133.6s TimeCoverageRelationStatistics Valid=287, Invalid=4825, Unknown=0, NotChecked=0, Total=5112 [2022-12-14 12:44:47,174 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 192 mSDsluCounter, 4977 mSDsCounter, 0 mSdLazyCounter, 6293 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 5194 SdHoareTripleChecker+Invalid, 6310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 6293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:44:47,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 5194 Invalid, 6310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 6293 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2022-12-14 12:44:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-12-14 12:44:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 482. [2022-12-14 12:44:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 322 states have (on average 1.3975155279503106) internal successors, (450), 330 states have internal predecessors, (450), 123 states have call successors, (123), 40 states have call predecessors, (123), 36 states have return successors, (122), 113 states have call predecessors, (122), 122 states have call successors, (122) [2022-12-14 12:44:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 695 transitions. [2022-12-14 12:44:47,499 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 695 transitions. Word has length 90 [2022-12-14 12:44:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:44:47,499 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 695 transitions. [2022-12-14 12:44:47,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 17 states have call successors, (19), 10 states have call predecessors, (19), 7 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-12-14 12:44:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 695 transitions. [2022-12-14 12:44:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 12:44:47,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:44:47,501 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:44:47,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 12:44:47,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:44:47,701 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:44:47,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:44:47,702 INFO L85 PathProgramCache]: Analyzing trace with hash 611898513, now seen corresponding path program 1 times [2022-12-14 12:44:47,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:44:47,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100012054] [2022-12-14 12:44:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:44:47,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:44:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:44:47,797 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 12:44:47,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:44:47,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100012054] [2022-12-14 12:44:47,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100012054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:44:47,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234227974] [2022-12-14 12:44:47,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:44:47,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:44:47,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:44:47,799 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:44:47,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7c438af-8834-47a7-9df8-b20b243cb7cb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:44:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:44:48,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:44:48,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:44:48,058 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 12:44:48,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:44:48,097 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 12:44:48,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234227974] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:44:48,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [518647174] [2022-12-14 12:44:48,101 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-12-14 12:44:48,101 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:44:48,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:44:48,101 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:44:48,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:47:07,849 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 12:47:08,147 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2022-12-14 12:47:08,426 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2022-12-14 12:47:08,714 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 421 for LOIs [2022-12-14 12:47:31,509 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-12-14 12:47:31,565 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 12:47:31,955 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 419 for LOIs [2022-12-14 12:47:35,472 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 243 for LOIs [2022-12-14 12:47:45,110 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 390 for LOIs [2022-12-14 12:47:45,579 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 403 for LOIs [2022-12-14 12:47:45,807 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 224 for LOIs [2022-12-14 12:47:45,909 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 391 for LOIs [2022-12-14 12:47:46,129 INFO L180 IcfgInterpreter]: Interpretation finished