./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product35.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_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/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_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/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_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/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 8693f57a03775f9dd58f5523ab36f07a2ce550b119e4923229e8bee683b68937 --- 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 06:42:19,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:42:19,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:42:19,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:42:19,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:42:19,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:42:19,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:42:19,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:42:19,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:42:19,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:42:19,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:42:19,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:42:19,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:42:19,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:42:19,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:42:19,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:42:19,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:42:19,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:42:19,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:42:19,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:42:19,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:42:19,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:42:19,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:42:19,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:42:19,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:42:19,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:42:19,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:42:19,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:42:19,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:42:19,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:42:19,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:42:19,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:42:19,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:42:19,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:42:19,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:42:19,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:42:19,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:42:19,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:42:19,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:42:19,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:42:19,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:42:19,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:42:19,859 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:42:19,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:42:19,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:42:19,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:42:19,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:42:19,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:42:19,860 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:42:19,861 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:42:19,861 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:42:19,861 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:42:19,861 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:42:19,861 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:42:19,861 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:42:19,861 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:42:19,862 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:42:19,862 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:42:19,862 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:42:19,862 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:42:19,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:42:19,863 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:42:19,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:42:19,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:42:19,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:42:19,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:42:19,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:42:19,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:42:19,864 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:42:19,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:42:19,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:42:19,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:42:19,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:42:19,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:42:19,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:42:19,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:42:19,865 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:42:19,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:42:19,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:42:19,866 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:42:19,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:42:19,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:42:19,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:42:19,866 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_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8693f57a03775f9dd58f5523ab36f07a2ce550b119e4923229e8bee683b68937 [2022-12-14 06:42:20,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:42:20,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:42:20,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:42:20,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:42:20,056 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:42:20,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec8_product35.cil.c [2022-12-14 06:42:22,626 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:42:22,840 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:42:22,840 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/sv-benchmarks/c/product-lines/email_spec8_product35.cil.c [2022-12-14 06:42:22,852 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/data/0e1d1b3a1/8f1dbb6b40c64974b7f37a0d04bb433a/FLAG5805d2a8c [2022-12-14 06:42:22,863 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/data/0e1d1b3a1/8f1dbb6b40c64974b7f37a0d04bb433a [2022-12-14 06:42:22,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:42:22,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:42:22,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:42:22,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:42:22,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:42:22,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:42:22" (1/1) ... [2022-12-14 06:42:22,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42694aeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:22, skipping insertion in model container [2022-12-14 06:42:22,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:42:22" (1/1) ... [2022-12-14 06:42:22,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:42:22,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:42:23,109 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,121 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,122 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,125 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,147 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,150 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,156 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,157 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,205 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,207 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,211 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,219 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_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/sv-benchmarks/c/product-lines/email_spec8_product35.cil.c[16425,16438] [2022-12-14 06:42:23,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:42:23,378 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:42:23,391 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,394 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,395 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,396 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,409 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,410 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,412 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,413 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,416 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,417 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,419 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:42:23,423 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_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/sv-benchmarks/c/product-lines/email_spec8_product35.cil.c[16425,16438] [2022-12-14 06:42:23,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:42:23,524 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:42:23,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23 WrapperNode [2022-12-14 06:42:23,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:42:23,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:42:23,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:42:23,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:42:23,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,609 INFO L138 Inliner]: procedures = 138, calls = 252, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1162 [2022-12-14 06:42:23,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:42:23,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:42:23,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:42:23,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:42:23,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:42:23,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:42:23,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:42:23,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:42:23,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (1/1) ... [2022-12-14 06:42:23,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:42:23,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:42:23,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:42:23,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:42:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 06:42:23,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 06:42:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 06:42:23,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 06:42:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 06:42:23,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 06:42:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 06:42:23,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 06:42:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 06:42:23,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 06:42:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 06:42:23,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 06:42:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 06:42:23,743 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 06:42:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 06:42:23,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 06:42:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 06:42:23,744 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 06:42:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 06:42:23,744 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 06:42:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 06:42:23,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 06:42:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 06:42:23,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 06:42:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 06:42:23,744 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 06:42:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 06:42:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 06:42:23,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 06:42:23,744 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 06:42:23,744 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 06:42:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 06:42:23,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 06:42:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:42:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 06:42:23,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 06:42:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 06:42:23,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 06:42:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 06:42:23,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 06:42:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 06:42:23,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 06:42:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 06:42:23,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 06:42:23,745 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 06:42:23,746 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 06:42:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 06:42:23,746 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 06:42:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 06:42:23,746 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 06:42:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 06:42:23,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 06:42:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 06:42:23,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 06:42:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 06:42:23,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 06:42:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:42:23,746 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 06:42:23,746 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 06:42:23,747 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 06:42:23,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 06:42:23,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:42:23,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:42:23,923 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:42:23,925 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:42:24,578 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:42:25,039 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:42:25,039 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:42:25,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:42:25 BoogieIcfgContainer [2022-12-14 06:42:25,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:42:25,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:42:25,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:42:25,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:42:25,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:42:22" (1/3) ... [2022-12-14 06:42:25,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6ee705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:42:25, skipping insertion in model container [2022-12-14 06:42:25,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:42:23" (2/3) ... [2022-12-14 06:42:25,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6ee705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:42:25, skipping insertion in model container [2022-12-14 06:42:25,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:42:25" (3/3) ... [2022-12-14 06:42:25,051 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product35.cil.c [2022-12-14 06:42:25,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:42:25,070 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:42:25,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:42:25,121 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;@131a70a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:42:25,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:42:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-12-14 06:42:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 06:42:25,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:25,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:25,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:42:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash 55201474, now seen corresponding path program 1 times [2022-12-14 06:42:25,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:42:25,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000916674] [2022-12-14 06:42:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:25,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:42:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:42:25,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:42:25,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000916674] [2022-12-14 06:42:25,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000916674] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:25,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:25,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:42:25,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860869785] [2022-12-14 06:42:25,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:25,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 06:42:25,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:42:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 06:42:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:42:25,459 INFO L87 Difference]: Start difference. First operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 06:42:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:25,598 INFO L93 Difference]: Finished difference Result 392 states and 521 transitions. [2022-12-14 06:42:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 06:42:25,601 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-12-14 06:42:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:25,611 INFO L225 Difference]: With dead ends: 392 [2022-12-14 06:42:25,612 INFO L226 Difference]: Without dead ends: 239 [2022-12-14 06:42:25,617 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 06:42:25,620 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:25,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 274 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:42:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-14 06:42:25,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-12-14 06:42:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 138 states have internal predecessors, (169), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-12-14 06:42:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 318 transitions. [2022-12-14 06:42:25,677 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 318 transitions. Word has length 71 [2022-12-14 06:42:25,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:25,678 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 318 transitions. [2022-12-14 06:42:25,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 06:42:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 318 transitions. [2022-12-14 06:42:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 06:42:25,682 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:25,682 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:25,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:42:25,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:42:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:25,683 INFO L85 PathProgramCache]: Analyzing trace with hash -571066753, now seen corresponding path program 1 times [2022-12-14 06:42:25,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:42:25,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985326212] [2022-12-14 06:42:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:25,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:42:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:42:25,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:42:25,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985326212] [2022-12-14 06:42:25,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985326212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:25,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:25,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:42:25,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543874931] [2022-12-14 06:42:25,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:25,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:42:25,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:42:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:42:25,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:42:25,869 INFO L87 Difference]: Start difference. First operand 239 states and 318 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 06:42:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:25,997 INFO L93 Difference]: Finished difference Result 388 states and 506 transitions. [2022-12-14 06:42:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:42:25,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-12-14 06:42:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:25,999 INFO L225 Difference]: With dead ends: 388 [2022-12-14 06:42:25,999 INFO L226 Difference]: Without dead ends: 241 [2022-12-14 06:42:26,001 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 06:42:26,002 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:26,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 541 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:42:26,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-12-14 06:42:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-12-14 06:42:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 140 states have internal predecessors, (171), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-12-14 06:42:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2022-12-14 06:42:26,029 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 72 [2022-12-14 06:42:26,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:26,030 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2022-12-14 06:42:26,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 06:42:26,030 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2022-12-14 06:42:26,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 06:42:26,035 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:26,035 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:26,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:42:26,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:42:26,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:26,036 INFO L85 PathProgramCache]: Analyzing trace with hash -226565225, now seen corresponding path program 1 times [2022-12-14 06:42:26,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:42:26,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138273871] [2022-12-14 06:42:26,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:26,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:42:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:42:26,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:42:26,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138273871] [2022-12-14 06:42:26,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138273871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:26,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:26,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:42:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436871583] [2022-12-14 06:42:26,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:26,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:42:26,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:42:26,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:42:26,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:42:26,164 INFO L87 Difference]: Start difference. First operand 241 states and 320 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 06:42:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:26,285 INFO L93 Difference]: Finished difference Result 517 states and 707 transitions. [2022-12-14 06:42:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:42:26,286 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-12-14 06:42:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:26,288 INFO L225 Difference]: With dead ends: 517 [2022-12-14 06:42:26,288 INFO L226 Difference]: Without dead ends: 294 [2022-12-14 06:42:26,290 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 06:42:26,291 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 59 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:26,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 564 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:42:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-12-14 06:42:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2022-12-14 06:42:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 174 states have internal predecessors, (226), 89 states have call successors, (89), 29 states have call predecessors, (89), 29 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2022-12-14 06:42:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2022-12-14 06:42:26,314 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 77 [2022-12-14 06:42:26,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:26,314 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2022-12-14 06:42:26,314 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 06:42:26,314 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2022-12-14 06:42:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 06:42:26,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:26,317 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:26,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:42:26,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:42:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1074931225, now seen corresponding path program 1 times [2022-12-14 06:42:26,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:42:26,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868065769] [2022-12-14 06:42:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:26,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:42:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:42:26,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:42:26,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868065769] [2022-12-14 06:42:26,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868065769] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:42:26,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731490259] [2022-12-14 06:42:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:26,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:42:26,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:42:26,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:42:26,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:42:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:26,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:42:26,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:42:26,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:42:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:42:26,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731490259] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:42:26,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [808063334] [2022-12-14 06:42:26,865 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-12-14 06:42:26,866 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:42:26,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:42:26,875 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:42:26,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:43:00,876 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 06:43:01,172 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 483 for LOIs [2022-12-14 06:43:37,186 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-12-14 06:43:37,473 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 06:43:37,773 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 481 for LOIs [2022-12-14 06:43:43,441 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 439 for LOIs [2022-12-14 06:43:43,716 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 282 for LOIs [2022-12-14 06:43:51,765 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-12-14 06:43:51,836 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 249 for LOIs [2022-12-14 06:43:51,877 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-12-14 06:43:52,519 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 257 for LOIs [2022-12-14 06:43:52,567 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:44:39,390 WARN L233 SmtUtils]: Spent 12.06s on a formula simplification. DAG size of input: 591 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:46:11,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [808063334] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:46:11,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:46:11,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-12-14 06:46:11,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75666335] [2022-12-14 06:46:11,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:46:11,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-14 06:46:11,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:46:11,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-14 06:46:11,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=3269, Unknown=0, NotChecked=0, Total=3422 [2022-12-14 06:46:11,880 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 06:46:19,641 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 534 DAG size of output: 410 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:46:35,243 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 586 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:47:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:47:20,377 INFO L93 Difference]: Finished difference Result 727 states and 1078 transitions. [2022-12-14 06:47:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-14 06:47:20,378 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 78 [2022-12-14 06:47:20,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:47:20,380 INFO L225 Difference]: With dead ends: 727 [2022-12-14 06:47:20,380 INFO L226 Difference]: Without dead ends: 456 [2022-12-14 06:47:20,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 174.8s TimeCoverageRelationStatistics Valid=239, Invalid=4873, Unknown=0, NotChecked=0, Total=5112 [2022-12-14 06:47:20,382 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 171 mSDsluCounter, 8185 mSDsCounter, 0 mSdLazyCounter, 10372 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 8495 SdHoareTripleChecker+Invalid, 10402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 10372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:47:20,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 8495 Invalid, 10402 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [30 Valid, 10372 Invalid, 0 Unknown, 0 Unchecked, 32.4s Time] [2022-12-14 06:47:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-12-14 06:47:20,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 350. [2022-12-14 06:47:20,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 214 states have (on average 1.3177570093457944) internal successors, (282), 218 states have internal predecessors, (282), 99 states have call successors, (99), 39 states have call predecessors, (99), 36 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2022-12-14 06:47:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 479 transitions. [2022-12-14 06:47:20,498 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 479 transitions. Word has length 78 [2022-12-14 06:47:20,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:47:20,498 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 479 transitions. [2022-12-14 06:47:20,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-14 06:47:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 479 transitions. [2022-12-14 06:47:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 06:47:20,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:47:20,501 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:47:20,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:47:20,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:47:20,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:47:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:47:20,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1130300278, now seen corresponding path program 1 times [2022-12-14 06:47:20,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:47:20,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238535497] [2022-12-14 06:47:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:47:20,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:47:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:47:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:47:20,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:47:20,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238535497] [2022-12-14 06:47:20,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238535497] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:47:20,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:47:20,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:47:20,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927014965] [2022-12-14 06:47:20,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:47:20,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:47:20,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:47:20,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:47:20,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:47:20,776 INFO L87 Difference]: Start difference. First operand 350 states and 479 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 06:47:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:47:21,060 INFO L93 Difference]: Finished difference Result 763 states and 1093 transitions. [2022-12-14 06:47:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:47:21,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 06:47:21,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:47:21,063 INFO L225 Difference]: With dead ends: 763 [2022-12-14 06:47:21,064 INFO L226 Difference]: Without dead ends: 475 [2022-12-14 06:47:21,065 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 06:47:21,066 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 57 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:47:21,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 572 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:47:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-12-14 06:47:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 470. [2022-12-14 06:47:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 303 states have (on average 1.386138613861386) internal successors, (420), 307 states have internal predecessors, (420), 130 states have call successors, (130), 39 states have call predecessors, (130), 36 states have return successors, (129), 125 states have call predecessors, (129), 129 states have call successors, (129) [2022-12-14 06:47:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 679 transitions. [2022-12-14 06:47:21,243 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 679 transitions. Word has length 83 [2022-12-14 06:47:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:47:21,244 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 679 transitions. [2022-12-14 06:47:21,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 06:47:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 679 transitions. [2022-12-14 06:47:21,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 06:47:21,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:47:21,245 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:47:21,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:47:21,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:47:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:47:21,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1227126021, now seen corresponding path program 1 times [2022-12-14 06:47:21,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:47:21,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033838113] [2022-12-14 06:47:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:47:21,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:47:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:47:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:47:21,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:47:21,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033838113] [2022-12-14 06:47:21,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033838113] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:47:21,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332699449] [2022-12-14 06:47:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:47:21,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:47:21,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:47:21,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:47:21,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:47:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:47:21,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:47:21,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:47:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:47:21,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:47:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:47:21,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332699449] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:47:21,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1078333477] [2022-12-14 06:47:21,642 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 06:47:21,643 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:47:21,643 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:47:21,643 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:47:21,643 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:47:54,778 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 06:47:55,069 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-12-14 06:47:55,357 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:48:38,960 WARN L233 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 589 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:49:02,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1078333477] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:49:02,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:49:02,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 06:49:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302481046] [2022-12-14 06:49:02,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:49:02,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 06:49:02,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:49:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 06:49:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-12-14 06:49:02,626 INFO L87 Difference]: Start difference. First operand 470 states and 679 transitions. Second operand has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 06:49:13,911 WARN L233 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 527 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:49:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:49:39,399 INFO L93 Difference]: Finished difference Result 936 states and 1399 transitions. [2022-12-14 06:49:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 06:49:39,400 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 84 [2022-12-14 06:49:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:49:39,401 INFO L225 Difference]: With dead ends: 936 [2022-12-14 06:49:39,401 INFO L226 Difference]: Without dead ends: 565 [2022-12-14 06:49:39,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 96.6s TimeCoverageRelationStatistics Valid=200, Invalid=1206, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 06:49:39,403 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 189 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:49:39,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 4200 Invalid, 2211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-12-14 06:49:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-12-14 06:49:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 484. [2022-12-14 06:49:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 315 states have (on average 1.3873015873015873) internal successors, (437), 319 states have internal predecessors, (437), 131 states have call successors, (131), 40 states have call predecessors, (131), 37 states have return successors, (130), 126 states have call predecessors, (130), 130 states have call successors, (130) [2022-12-14 06:49:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 698 transitions. [2022-12-14 06:49:39,585 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 698 transitions. Word has length 84 [2022-12-14 06:49:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:49:39,586 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 698 transitions. [2022-12-14 06:49:39,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 06:49:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 698 transitions. [2022-12-14 06:49:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 06:49:39,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:49:39,587 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:49:39,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 06:49:39,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:49:39,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:49:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:49:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash 863927262, now seen corresponding path program 1 times [2022-12-14 06:49:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:49:39,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341672040] [2022-12-14 06:49:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:49:39,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:49:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:49:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:49:39,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:49:39,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341672040] [2022-12-14 06:49:39,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341672040] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:49:39,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907706947] [2022-12-14 06:49:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:49:39,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:49:39,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:49:39,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:49:39,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:49:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:49:40,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:49:40,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:49:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:49:40,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:49:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:49:40,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907706947] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:49:40,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [554300550] [2022-12-14 06:49:40,254 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-12-14 06:49:40,254 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:49:40,254 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:49:40,254 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:49:40,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:51:47,775 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 06:51:48,069 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-12-14 06:51:48,376 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-12-14 06:51:48,650 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 250 for LOIs [2022-12-14 06:51:50,157 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2022-12-14 06:51:50,215 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 218 for LOIs [2022-12-14 06:51:50,248 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 06:51:50,552 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2022-12-14 06:51:53,004 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 208 for LOIs [2022-12-14 06:51:53,035 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 260 for LOIs [2022-12-14 06:51:57,746 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 230 for LOIs [2022-12-14 06:51:57,810 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 227 for LOIs [2022-12-14 06:51:57,846 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 431 for LOIs [2022-12-14 06:52:01,581 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 235 for LOIs [2022-12-14 06:52:01,622 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:52:51,031 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 529 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:53:12,335 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 527 DAG size of output: 319 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:53:20,489 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 431 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:54:01,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [554300550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:01,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:54:01,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [4, 4, 4] total 68 [2022-12-14 06:54:01,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46534721] [2022-12-14 06:54:01,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:01,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-14 06:54:01,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:54:01,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-14 06:54:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=4371, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 06:54:01,876 INFO L87 Difference]: Start difference. First operand 484 states and 698 transitions. Second operand has 63 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 36 states have internal predecessors, (44), 20 states have call successors, (20), 15 states have call predecessors, (20), 12 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-14 06:55:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:55:07,844 INFO L93 Difference]: Finished difference Result 1008 states and 1500 transitions. [2022-12-14 06:55:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-14 06:55:07,845 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 36 states have internal predecessors, (44), 20 states have call successors, (20), 15 states have call predecessors, (20), 12 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 87 [2022-12-14 06:55:07,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:55:07,847 INFO L225 Difference]: With dead ends: 1008 [2022-12-14 06:55:07,847 INFO L226 Difference]: Without dead ends: 637 [2022-12-14 06:55:07,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 151.8s TimeCoverageRelationStatistics Valid=312, Invalid=6660, Unknown=0, NotChecked=0, Total=6972 [2022-12-14 06:55:07,849 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 213 mSDsluCounter, 8035 mSDsCounter, 0 mSdLazyCounter, 11624 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 8340 SdHoareTripleChecker+Invalid, 11661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 11624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:55:07,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 8340 Invalid, 11661 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [37 Valid, 11624 Invalid, 0 Unknown, 0 Unchecked, 33.7s Time] [2022-12-14 06:55:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-12-14 06:55:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 574. [2022-12-14 06:55:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 383 states have (on average 1.3838120104438643) internal successors, (530), 388 states have internal predecessors, (530), 144 states have call successors, (144), 52 states have call predecessors, (144), 46 states have return successors, (143), 135 states have call predecessors, (143), 143 states have call successors, (143) [2022-12-14 06:55:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 817 transitions. [2022-12-14 06:55:08,141 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 817 transitions. Word has length 87 [2022-12-14 06:55:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:55:08,142 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 817 transitions. [2022-12-14 06:55:08,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 36 states have internal predecessors, (44), 20 states have call successors, (20), 15 states have call predecessors, (20), 12 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-14 06:55:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 817 transitions. [2022-12-14 06:55:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 06:55:08,143 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:55:08,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:55:08,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 06:55:08,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:55:08,344 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:55:08,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:55:08,344 INFO L85 PathProgramCache]: Analyzing trace with hash 668280512, now seen corresponding path program 1 times [2022-12-14 06:55:08,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:55:08,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897059519] [2022-12-14 06:55:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:55:08,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:55:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:55:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:55:08,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:55:08,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897059519] [2022-12-14 06:55:08,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897059519] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:55:08,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101617570] [2022-12-14 06:55:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:55:08,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:55:08,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:55:08,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:55:08,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab3ff81-5cf7-4f05-b0ad-ed10bf7187b4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:55:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:55:08,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:55:08,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:55:08,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:55:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:55:08,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101617570] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:55:08,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1264231319] [2022-12-14 06:55:08,749 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-12-14 06:55:08,749 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:55:08,750 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:55:08,750 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:55:08,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:55:49,081 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 06:55:49,368 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 483 for LOIs [2022-12-14 06:56:24,946 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-12-14 06:56:25,233 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 06:56:25,527 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 481 for LOIs [2022-12-14 06:56:31,166 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 439 for LOIs [2022-12-14 06:56:31,445 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 282 for LOIs