./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/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_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/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_7d393b20-f25f-41ba-998a-e1142eeb796f/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 9deea958caebdff7c89a17deb67516eff149386872824a7682accca78686b765 --- 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 14:36:56,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:36:56,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:36:56,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:36:56,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:36:56,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:36:56,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:36:56,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:36:56,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:36:56,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:36:56,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:36:56,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:36:56,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:36:56,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:36:56,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:36:56,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:36:56,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:36:56,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:36:56,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:36:56,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:36:56,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:36:56,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:36:56,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:36:56,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:36:56,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:36:56,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:36:56,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:36:56,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:36:56,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:36:56,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:36:56,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:36:56,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:36:56,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:36:56,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:36:56,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:36:56,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:36:56,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:36:56,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:36:56,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:36:56,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:36:56,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:36:56,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:36:56,756 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:36:56,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:36:56,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:36:56,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:36:56,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:36:56,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:36:56,758 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:36:56,758 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:36:56,759 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:36:56,759 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:36:56,759 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:36:56,759 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:36:56,759 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:36:56,760 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:36:56,760 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:36:56,760 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:36:56,760 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:36:56,760 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:36:56,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:36:56,761 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:36:56,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:36:56,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:36:56,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:36:56,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:36:56,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:36:56,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:36:56,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:36:56,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:36:56,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:36:56,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:36:56,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:36:56,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:36:56,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:36:56,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:36:56,764 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:36:56,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:36:56,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:36:56,765 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:36:56,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:36:56,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:36:56,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:36:56,765 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_7d393b20-f25f-41ba-998a-e1142eeb796f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9deea958caebdff7c89a17deb67516eff149386872824a7682accca78686b765 [2022-12-14 14:36:56,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:36:56,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:36:56,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:36:56,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:36:56,981 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:36:56,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec0_product19.cil.c [2022-12-14 14:36:59,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:36:59,843 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:36:59,844 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/sv-benchmarks/c/product-lines/email_spec0_product19.cil.c [2022-12-14 14:36:59,859 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/data/a6b2279ca/8206c99731804b2d820d29b6388f051f/FLAGa8c5d22ab [2022-12-14 14:36:59,873 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/data/a6b2279ca/8206c99731804b2d820d29b6388f051f [2022-12-14 14:36:59,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:36:59,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:36:59,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:36:59,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:36:59,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:36:59,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:36:59" (1/1) ... [2022-12-14 14:36:59,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2c29cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:59, skipping insertion in model container [2022-12-14 14:36:59,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:36:59" (1/1) ... [2022-12-14 14:36:59,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:36:59,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:37:00,155 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,159 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,175 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,221 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,223 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,228 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,306 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_7d393b20-f25f-41ba-998a-e1142eeb796f/sv-benchmarks/c/product-lines/email_spec0_product19.cil.c[39319,39332] [2022-12-14 14:37:00,321 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:37:00,384 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:37:00,401 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,402 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,419 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,423 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,424 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,426 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,455 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_7d393b20-f25f-41ba-998a-e1142eeb796f/sv-benchmarks/c/product-lines/email_spec0_product19.cil.c[39319,39332] [2022-12-14 14:37:00,459 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:37:00,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:37:00,501 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:37:00,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00 WrapperNode [2022-12-14 14:37:00,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:37:00,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:37:00,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:37:00,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:37:00,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,567 INFO L138 Inliner]: procedures = 127, calls = 198, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 992 [2022-12-14 14:37:00,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:37:00,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:37:00,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:37:00,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:37:00,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,607 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:37:00,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:37:00,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:37:00,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:37:00,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (1/1) ... [2022-12-14 14:37:00,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:37:00,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:37:00,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:37:00,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:37:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 14:37:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 14:37:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 14:37:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 14:37:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 14:37:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 14:37:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 14:37:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 14:37:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 14:37:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 14:37:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 14:37:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 14:37:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 14:37:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 14:37:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 14:37:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 14:37:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 14:37:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:37:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 14:37:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 14:37:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 14:37:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 14:37:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 14:37:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 14:37:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 14:37:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 14:37:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 14:37:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 14:37:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 14:37:00,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 14:37:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 14:37:00,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 14:37:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:37:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 14:37:00,675 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 14:37:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:37:00,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:37:00,809 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:37:00,812 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:37:01,311 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:37:01,601 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:37:01,601 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:37:01,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:37:01 BoogieIcfgContainer [2022-12-14 14:37:01,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:37:01,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:37:01,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:37:01,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:37:01,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:36:59" (1/3) ... [2022-12-14 14:37:01,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4497faf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:37:01, skipping insertion in model container [2022-12-14 14:37:01,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:00" (2/3) ... [2022-12-14 14:37:01,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4497faf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:37:01, skipping insertion in model container [2022-12-14 14:37:01,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:37:01" (3/3) ... [2022-12-14 14:37:01,610 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product19.cil.c [2022-12-14 14:37:01,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:37:01,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:37:01,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:37:01,672 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;@2813f49b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:37:01,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:37:01,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 90 states have (on average 1.3555555555555556) internal successors, (122), 92 states have internal predecessors, (122), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-12-14 14:37:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 14:37:01,686 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:01,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:37:01,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:37:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash 468090325, now seen corresponding path program 1 times [2022-12-14 14:37:01,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:01,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406627647] [2022-12-14 14:37:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:01,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:37:01,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:01,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406627647] [2022-12-14 14:37:01,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406627647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:37:01,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:37:01,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:37:01,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645447840] [2022-12-14 14:37:01,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:37:01,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:37:01,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:37:01,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:37:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:37:01,989 INFO L87 Difference]: Start difference. First operand has 150 states, 90 states have (on average 1.3555555555555556) internal successors, (122), 92 states have internal predecessors, (122), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 14:37:02,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:37:02,085 INFO L93 Difference]: Finished difference Result 217 states and 290 transitions. [2022-12-14 14:37:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:37:02,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2022-12-14 14:37:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:37:02,096 INFO L225 Difference]: With dead ends: 217 [2022-12-14 14:37:02,096 INFO L226 Difference]: Without dead ends: 147 [2022-12-14 14:37:02,099 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 14:37:02,101 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:37:02,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:37:02,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-14 14:37:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-12-14 14:37:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 88 states have (on average 1.3181818181818181) internal successors, (116), 89 states have internal predecessors, (116), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-12-14 14:37:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 199 transitions. [2022-12-14 14:37:02,138 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 199 transitions. Word has length 64 [2022-12-14 14:37:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:37:02,139 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 199 transitions. [2022-12-14 14:37:02,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 14:37:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 199 transitions. [2022-12-14 14:37:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 14:37:02,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:02,142 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:37:02,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:37:02,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:37:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:02,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1178066122, now seen corresponding path program 1 times [2022-12-14 14:37:02,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:02,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496903158] [2022-12-14 14:37:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:02,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:37:02,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:02,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496903158] [2022-12-14 14:37:02,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496903158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:37:02,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:37:02,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:37:02,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730147679] [2022-12-14 14:37:02,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:37:02,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:37:02,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:37:02,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:37:02,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:37:02,264 INFO L87 Difference]: Start difference. First operand 147 states and 199 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 14:37:02,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:37:02,348 INFO L93 Difference]: Finished difference Result 213 states and 278 transitions. [2022-12-14 14:37:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:37:02,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-12-14 14:37:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:37:02,350 INFO L225 Difference]: With dead ends: 213 [2022-12-14 14:37:02,350 INFO L226 Difference]: Without dead ends: 149 [2022-12-14 14:37:02,351 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 14:37:02,351 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:37:02,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:37:02,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-14 14:37:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-12-14 14:37:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 90 states have (on average 1.3111111111111111) internal successors, (118), 91 states have internal predecessors, (118), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-12-14 14:37:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2022-12-14 14:37:02,363 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 201 transitions. Word has length 65 [2022-12-14 14:37:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:37:02,363 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 201 transitions. [2022-12-14 14:37:02,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 14:37:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 201 transitions. [2022-12-14 14:37:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 14:37:02,367 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:02,368 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:37:02,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:37:02,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:37:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1937028868, now seen corresponding path program 1 times [2022-12-14 14:37:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:02,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178536674] [2022-12-14 14:37:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:37:02,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:02,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178536674] [2022-12-14 14:37:02,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178536674] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:37:02,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:37:02,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:37:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95065347] [2022-12-14 14:37:02,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:37:02,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:37:02,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:37:02,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:37:02,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:37:02,446 INFO L87 Difference]: Start difference. First operand 149 states and 201 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 14:37:02,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:37:02,530 INFO L93 Difference]: Finished difference Result 328 states and 461 transitions. [2022-12-14 14:37:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:37:02,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-12-14 14:37:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:37:02,532 INFO L225 Difference]: With dead ends: 328 [2022-12-14 14:37:02,532 INFO L226 Difference]: Without dead ends: 197 [2022-12-14 14:37:02,533 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 14:37:02,533 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 57 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:37:02,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 355 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:37:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-12-14 14:37:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2022-12-14 14:37:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 122 states have (on average 1.401639344262295) internal successors, (171), 123 states have internal predecessors, (171), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-12-14 14:37:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 276 transitions. [2022-12-14 14:37:02,547 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 276 transitions. Word has length 70 [2022-12-14 14:37:02,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:37:02,547 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 276 transitions. [2022-12-14 14:37:02,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 14:37:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 276 transitions. [2022-12-14 14:37:02,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 14:37:02,550 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:02,551 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:37:02,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:37:02,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:37:02,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:02,551 INFO L85 PathProgramCache]: Analyzing trace with hash 766165043, now seen corresponding path program 1 times [2022-12-14 14:37:02,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:02,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226033893] [2022-12-14 14:37:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:02,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:37:02,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:02,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226033893] [2022-12-14 14:37:02,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226033893] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:37:02,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285204881] [2022-12-14 14:37:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:02,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:37:02,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:37:02,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:37:02,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:37:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:02,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:37:02,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:37:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:37:02,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:37:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:37:02,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285204881] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:37:02,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [239900390] [2022-12-14 14:37:02,976 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-12-14 14:37:02,976 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:37:02,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:37:02,985 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:37:02,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:37:31,352 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 14:37:31,640 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 14:37:31,940 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 472 for LOIs [2022-12-14 14:38:02,063 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 470 for LOIs [2022-12-14 14:38:38,158 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-12-14 14:38:38,189 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-12-14 14:38:38,230 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2022-12-14 14:38:38,521 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 237 for LOIs [2022-12-14 14:38:38,611 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:40:15,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [239900390] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:40:15,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:40:15,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-12-14 14:40:15,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260859588] [2022-12-14 14:40:15,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:40:15,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 14:40:15,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:40:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 14:40:15,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2117, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 14:40:15,810 INFO L87 Difference]: Start difference. First operand 192 states and 276 transitions. Second operand has 43 states, 28 states have (on average 1.25) internal successors, (35), 26 states have internal predecessors, (35), 14 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-12-14 14:40:30,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:40:30,003 INFO L93 Difference]: Finished difference Result 500 states and 766 transitions. [2022-12-14 14:40:30,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 14:40:30,003 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.25) internal successors, (35), 26 states have internal predecessors, (35), 14 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 71 [2022-12-14 14:40:30,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:40:30,006 INFO L225 Difference]: With dead ends: 500 [2022-12-14 14:40:30,006 INFO L226 Difference]: Without dead ends: 326 [2022-12-14 14:40:30,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 99.3s TimeCoverageRelationStatistics Valid=147, Invalid=2205, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 14:40:30,008 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 195 mSDsluCounter, 3667 mSDsCounter, 0 mSdLazyCounter, 4280 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 3876 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 4280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-12-14 14:40:30,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 3876 Invalid, 4300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 4280 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-12-14 14:40:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-12-14 14:40:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 274. [2022-12-14 14:40:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 189 states have (on average 1.4550264550264551) internal successors, (275), 191 states have internal predecessors, (275), 62 states have call successors, (62), 23 states have call predecessors, (62), 22 states have return successors, (62), 59 states have call predecessors, (62), 61 states have call successors, (62) [2022-12-14 14:40:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 399 transitions. [2022-12-14 14:40:30,127 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 399 transitions. Word has length 71 [2022-12-14 14:40:30,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:40:30,128 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 399 transitions. [2022-12-14 14:40:30,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.25) internal successors, (35), 26 states have internal predecessors, (35), 14 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-12-14 14:40:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 399 transitions. [2022-12-14 14:40:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 14:40:30,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:40:30,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:40:30,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:40:30,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:40:30,333 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:40:30,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:40:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1747899710, now seen corresponding path program 1 times [2022-12-14 14:40:30,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:40:30,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056791205] [2022-12-14 14:40:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:40:30,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:40:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:40:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:40:30,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:40:30,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056791205] [2022-12-14 14:40:30,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056791205] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:40:30,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75024692] [2022-12-14 14:40:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:40:30,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:40:30,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:40:30,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:40:30,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:40:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:40:30,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:40:30,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:40:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:40:30,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:40:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:40:30,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75024692] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:40:30,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1994032355] [2022-12-14 14:40:30,744 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 14:40:30,745 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:40:30,745 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:40:30,745 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:40:30,745 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:40:58,772 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 14:40:59,057 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 14:40:59,343 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 472 for LOIs [2022-12-14 14:41:28,504 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 470 for LOIs [2022-12-14 14:42:05,458 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-12-14 14:42:05,490 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-12-14 14:42:05,529 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2022-12-14 14:42:05,825 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 446 for LOIs [2022-12-14 14:42:06,487 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 248 for LOIs [2022-12-14 14:42:06,526 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:43:49,115 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 612 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:44:03,343 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 667 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:44:03,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1994032355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:44:03,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:44:03,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-12-14 14:44:03,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329244800] [2022-12-14 14:44:03,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:44:03,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 14:44:03,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:44:03,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 14:44:03,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2691, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 14:44:03,350 INFO L87 Difference]: Start difference. First operand 274 states and 399 transitions. Second operand has 49 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-14 14:44:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:44:17,283 INFO L93 Difference]: Finished difference Result 389 states and 565 transitions. [2022-12-14 14:44:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-14 14:44:17,284 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 76 [2022-12-14 14:44:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:44:17,286 INFO L225 Difference]: With dead ends: 389 [2022-12-14 14:44:17,286 INFO L226 Difference]: Without dead ends: 332 [2022-12-14 14:44:17,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 118.7s TimeCoverageRelationStatistics Valid=179, Invalid=2791, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 14:44:17,287 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 224 mSDsluCounter, 3854 mSDsCounter, 0 mSdLazyCounter, 4720 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 4058 SdHoareTripleChecker+Invalid, 4730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-12-14 14:44:17,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 4058 Invalid, 4730 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 4720 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-12-14 14:44:17,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-12-14 14:44:17,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 278. [2022-12-14 14:44:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 192 states have (on average 1.4479166666666667) internal successors, (278), 194 states have internal predecessors, (278), 62 states have call successors, (62), 24 states have call predecessors, (62), 23 states have return successors, (62), 59 states have call predecessors, (62), 61 states have call successors, (62) [2022-12-14 14:44:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 402 transitions. [2022-12-14 14:44:17,408 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 402 transitions. Word has length 76 [2022-12-14 14:44:17,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:44:17,408 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 402 transitions. [2022-12-14 14:44:17,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-14 14:44:17,408 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 402 transitions. [2022-12-14 14:44:17,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 14:44:17,409 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:44:17,410 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:44:17,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:44:17,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:44:17,611 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:44:17,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:44:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1069597744, now seen corresponding path program 1 times [2022-12-14 14:44:17,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:44:17,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884986654] [2022-12-14 14:44:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:44:17,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:44:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:44:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:44:17,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:44:17,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884986654] [2022-12-14 14:44:17,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884986654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:44:17,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:44:17,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:44:17,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591242883] [2022-12-14 14:44:17,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:44:17,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:44:17,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:44:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:44:17,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:44:17,704 INFO L87 Difference]: Start difference. First operand 278 states and 402 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 14:44:18,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:44:18,005 INFO L93 Difference]: Finished difference Result 670 states and 1010 transitions. [2022-12-14 14:44:18,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:44:18,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2022-12-14 14:44:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:44:18,007 INFO L225 Difference]: With dead ends: 670 [2022-12-14 14:44:18,007 INFO L226 Difference]: Without dead ends: 418 [2022-12-14 14:44:18,007 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 14:44:18,008 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 55 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:44:18,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 368 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:44:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-12-14 14:44:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 411. [2022-12-14 14:44:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 300 states have (on average 1.5166666666666666) internal successors, (455), 302 states have internal predecessors, (455), 87 states have call successors, (87), 24 states have call predecessors, (87), 23 states have return successors, (87), 84 states have call predecessors, (87), 86 states have call successors, (87) [2022-12-14 14:44:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 629 transitions. [2022-12-14 14:44:18,196 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 629 transitions. Word has length 76 [2022-12-14 14:44:18,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:44:18,196 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 629 transitions. [2022-12-14 14:44:18,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 14:44:18,196 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 629 transitions. [2022-12-14 14:44:18,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 14:44:18,197 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:44:18,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:44:18,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:44:18,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:44:18,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:44:18,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1963395237, now seen corresponding path program 1 times [2022-12-14 14:44:18,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:44:18,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116540130] [2022-12-14 14:44:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:44:18,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:44:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:44:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:44:18,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:44:18,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116540130] [2022-12-14 14:44:18,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116540130] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:44:18,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555152957] [2022-12-14 14:44:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:44:18,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:44:18,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:44:18,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:44:18,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:44:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:44:18,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:44:18,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:44:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:44:18,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:44:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:44:18,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555152957] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:44:18,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [462722980] [2022-12-14 14:44:18,562 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-12-14 14:44:18,562 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:44:18,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:44:18,563 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:44:18,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:44:45,235 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 14:44:45,530 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 14:44:45,821 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 472 for LOIs [2022-12-14 14:45:14,678 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 470 for LOIs [2022-12-14 14:45:49,904 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-12-14 14:45:49,936 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 249 for LOIs [2022-12-14 14:45:49,975 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-12-14 14:45:50,014 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2022-12-14 14:45:50,307 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 446 for LOIs [2022-12-14 14:45:50,964 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 248 for LOIs [2022-12-14 14:45:51,002 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:47:35,369 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 612 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:47:53,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [462722980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:47:53,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:47:53,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-12-14 14:47:53,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867047596] [2022-12-14 14:47:53,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:47:53,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-14 14:47:53,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:47:53,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-14 14:47:53,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3113, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 14:47:53,071 INFO L87 Difference]: Start difference. First operand 411 states and 629 transitions. Second operand has 53 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 16 states have call successors, (17), 10 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 14:48:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:48:09,533 INFO L93 Difference]: Finished difference Result 512 states and 778 transitions. [2022-12-14 14:48:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-14 14:48:09,533 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 16 states have call successors, (17), 10 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 81 [2022-12-14 14:48:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:48:09,535 INFO L225 Difference]: With dead ends: 512 [2022-12-14 14:48:09,535 INFO L226 Difference]: Without dead ends: 455 [2022-12-14 14:48:09,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 124.3s TimeCoverageRelationStatistics Valid=201, Invalid=3221, Unknown=0, NotChecked=0, Total=3422 [2022-12-14 14:48:09,536 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 233 mSDsluCounter, 4102 mSDsCounter, 0 mSdLazyCounter, 5169 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 5176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-12-14 14:48:09,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 4279 Invalid, 5176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 5169 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-12-14 14:48:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-12-14 14:48:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 411. [2022-12-14 14:48:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 299 states have (on average 1.5117056856187292) internal successors, (452), 301 states have internal predecessors, (452), 87 states have call successors, (87), 25 states have call predecessors, (87), 24 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-14 14:48:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 625 transitions. [2022-12-14 14:48:09,737 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 625 transitions. Word has length 81 [2022-12-14 14:48:09,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:48:09,738 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 625 transitions. [2022-12-14 14:48:09,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 16 states have call successors, (17), 10 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 14:48:09,738 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 625 transitions. [2022-12-14 14:48:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 14:48:09,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:48:09,739 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:48:09,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:48:09,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 14:48:09,940 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:48:09,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:48:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1440285956, now seen corresponding path program 1 times [2022-12-14 14:48:09,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:48:09,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926655231] [2022-12-14 14:48:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:48:09,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:48:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:48:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:48:10,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:48:10,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926655231] [2022-12-14 14:48:10,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926655231] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:48:10,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686529981] [2022-12-14 14:48:10,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:48:10,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:48:10,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:48:10,048 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:48:10,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:48:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:48:10,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:48:10,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:48:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:48:10,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:48:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:48:10,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686529981] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:48:10,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1444585196] [2022-12-14 14:48:10,293 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-12-14 14:48:10,293 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:48:10,294 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:48:10,294 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:48:10,294 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:48:42,411 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 14:48:42,702 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 14:48:42,989 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:49:24,202 WARN L233 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 579 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:49:39,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1444585196] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:49:39,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:49:39,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 14:49:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399758945] [2022-12-14 14:49:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:49:39,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 14:49:39,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:49:39,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 14:49:39,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-12-14 14:49:39,787 INFO L87 Difference]: Start difference. First operand 411 states and 625 transitions. Second operand has 25 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-12-14 14:49:46,151 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 465 DAG size of output: 391 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:50:05,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:50:05,216 INFO L93 Difference]: Finished difference Result 823 states and 1304 transitions. [2022-12-14 14:50:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 14:50:05,216 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 77 [2022-12-14 14:50:05,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:50:05,218 INFO L225 Difference]: With dead ends: 823 [2022-12-14 14:50:05,218 INFO L226 Difference]: Without dead ends: 559 [2022-12-14 14:50:05,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 75.6s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 14:50:05,219 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 154 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:50:05,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 2825 Invalid, 2175 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-12-14 14:50:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-12-14 14:50:05,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 488. [2022-12-14 14:50:05,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 372 states have (on average 1.5403225806451613) internal successors, (573), 376 states have internal predecessors, (573), 90 states have call successors, (90), 26 states have call predecessors, (90), 25 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2022-12-14 14:50:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 752 transitions. [2022-12-14 14:50:05,517 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 752 transitions. Word has length 77 [2022-12-14 14:50:05,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:50:05,517 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 752 transitions. [2022-12-14 14:50:05,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-12-14 14:50:05,517 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 752 transitions. [2022-12-14 14:50:05,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 14:50:05,518 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:50:05,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:50:05,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 14:50:05,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:50:05,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:50:05,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:50:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash 864383004, now seen corresponding path program 1 times [2022-12-14 14:50:05,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:50:05,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723534258] [2022-12-14 14:50:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:50:05,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:50:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:50:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:50:05,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:50:05,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723534258] [2022-12-14 14:50:05,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723534258] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:50:05,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170419675] [2022-12-14 14:50:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:50:05,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:50:05,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:50:05,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:50:05,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d393b20-f25f-41ba-998a-e1142eeb796f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:50:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:50:06,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:50:06,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:50:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:50:06,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:50:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:50:06,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170419675] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:50:06,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [451579036] [2022-12-14 14:50:06,073 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-12-14 14:50:06,073 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:50:06,074 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:50:06,074 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:50:06,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:50:38,339 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 14:50:38,631 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-12-14 14:50:38,690 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 249 for LOIs [2022-12-14 14:50:38,765 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 14:50:39,058 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 255 for LOIs [2022-12-14 14:50:39,128 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:51:01,722 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 486 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)