./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/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_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/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_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/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 c862f9fbd969695db1625134466cee856e407b57f937740cfce5c982a0b9c02a --- 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 05:54:22,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:54:22,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:54:22,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:54:22,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:54:22,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:54:22,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:54:22,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:54:22,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:54:22,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:54:22,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:54:22,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:54:22,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:54:22,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:54:22,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:54:22,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:54:22,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:54:22,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:54:22,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:54:22,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:54:22,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:54:22,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:54:22,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:54:22,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:54:22,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:54:22,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:54:22,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:54:22,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:54:22,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:54:22,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:54:22,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:54:22,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:54:22,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:54:22,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:54:22,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:54:22,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:54:22,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:54:22,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:54:22,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:54:22,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:54:22,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:54:22,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:54:22,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:54:22,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:54:22,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:54:22,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:54:22,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:54:22,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:54:22,725 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:54:22,725 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:54:22,725 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:54:22,726 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:54:22,726 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:54:22,726 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:54:22,726 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:54:22,726 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:54:22,726 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:54:22,727 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:54:22,727 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:54:22,727 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:54:22,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:54:22,728 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:54:22,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:54:22,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:54:22,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:54:22,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:54:22,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:54:22,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:54:22,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:54:22,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:54:22,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:54:22,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:54:22,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:54:22,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:54:22,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:54:22,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:54:22,731 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:54:22,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:54:22,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:54:22,731 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:54:22,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:54:22,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:54:22,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:54:22,732 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_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c862f9fbd969695db1625134466cee856e407b57f937740cfce5c982a0b9c02a [2022-12-14 05:54:22,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:54:22,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:54:22,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:54:22,945 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:54:22,946 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:54:22,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec27_product25.cil.c [2022-12-14 05:54:25,495 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:54:25,713 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:54:25,714 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/sv-benchmarks/c/product-lines/email_spec27_product25.cil.c [2022-12-14 05:54:25,725 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/data/bc20706f9/7f8c0507b6f146908ada6c9d937e6f54/FLAG71df80bd7 [2022-12-14 05:54:25,736 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/data/bc20706f9/7f8c0507b6f146908ada6c9d937e6f54 [2022-12-14 05:54:25,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:54:25,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:54:25,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:54:25,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:54:25,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:54:25,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:54:25" (1/1) ... [2022-12-14 05:54:25,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d43e646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:25, skipping insertion in model container [2022-12-14 05:54:25,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:54:25" (1/1) ... [2022-12-14 05:54:25,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:54:25,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:54:25,942 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:25,952 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:25,953 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:25,957 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:25,968 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,086 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,116 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_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/sv-benchmarks/c/product-lines/email_spec27_product25.cil.c[58911,58924] [2022-12-14 05:54:26,134 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,135 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,137 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:54:26,154 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:54:26,167 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,168 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,169 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,170 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,174 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,208 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,219 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/sv-benchmarks/c/product-lines/email_spec27_product25.cil.c[58911,58924] [2022-12-14 05:54:26,220 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,221 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,223 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:54:26,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:54:26,262 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:54:26,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26 WrapperNode [2022-12-14 05:54:26,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:54:26,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:54:26,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:54:26,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:54:26,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,337 INFO L138 Inliner]: procedures = 130, calls = 219, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 1027 [2022-12-14 05:54:26,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:54:26,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:54:26,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:54:26,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:54:26,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:54:26,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:54:26,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:54:26,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:54:26,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (1/1) ... [2022-12-14 05:54:26,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:54:26,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:54:26,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:54:26,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:54:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 05:54:26,462 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 05:54:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 05:54:26,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 05:54:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-12-14 05:54:26,462 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-12-14 05:54:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 05:54:26,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 05:54:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 05:54:26,463 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 05:54:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 05:54:26,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 05:54:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 05:54:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 05:54:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 05:54:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 05:54:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 05:54:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 05:54:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 05:54:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 05:54:26,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 05:54:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 05:54:26,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 05:54:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:54:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 05:54:26,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 05:54:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 05:54:26,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 05:54:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 05:54:26,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 05:54:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 05:54:26,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 05:54:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 05:54:26,466 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 05:54:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-14 05:54:26,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-14 05:54:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 05:54:26,467 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 05:54:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 05:54:26,467 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 05:54:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 05:54:26,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 05:54:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 05:54:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 05:54:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:54:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 05:54:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 05:54:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 05:54:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 05:54:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:54:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:54:26,622 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:54:26,624 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:54:27,230 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:54:27,545 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:54:27,545 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:54:27,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:54:27 BoogieIcfgContainer [2022-12-14 05:54:27,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:54:27,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:54:27,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:54:27,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:54:27,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:54:25" (1/3) ... [2022-12-14 05:54:27,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46867ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:54:27, skipping insertion in model container [2022-12-14 05:54:27,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:54:26" (2/3) ... [2022-12-14 05:54:27,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46867ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:54:27, skipping insertion in model container [2022-12-14 05:54:27,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:54:27" (3/3) ... [2022-12-14 05:54:27,554 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product25.cil.c [2022-12-14 05:54:27,570 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:54:27,570 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:54:27,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:54:27,614 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;@64807a6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:54:27,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:54:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 193 states, 110 states have (on average 1.309090909090909) internal successors, (144), 113 states have internal predecessors, (144), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-12-14 05:54:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 05:54:27,628 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:54:27,629 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:54:27,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:54:27,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:54:27,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1461882522, now seen corresponding path program 1 times [2022-12-14 05:54:27,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:54:27,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552603039] [2022-12-14 05:54:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:54:27,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:54:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:54:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:54:27,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:54:27,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552603039] [2022-12-14 05:54:27,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552603039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:54:27,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:54:27,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:54:27,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093646185] [2022-12-14 05:54:27,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:54:27,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:54:27,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:54:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:54:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:54:27,891 INFO L87 Difference]: Start difference. First operand has 193 states, 110 states have (on average 1.309090909090909) internal successors, (144), 113 states have internal predecessors, (144), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:54:28,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:54:28,015 INFO L93 Difference]: Finished difference Result 294 states and 391 transitions. [2022-12-14 05:54:28,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:54:28,018 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-12-14 05:54:28,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:54:28,028 INFO L225 Difference]: With dead ends: 294 [2022-12-14 05:54:28,029 INFO L226 Difference]: Without dead ends: 190 [2022-12-14 05:54:28,032 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 05:54:28,035 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:54:28,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:54:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-12-14 05:54:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-12-14 05:54:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 108 states have (on average 1.2777777777777777) internal successors, (138), 110 states have internal predecessors, (138), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-12-14 05:54:28,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2022-12-14 05:54:28,076 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 75 [2022-12-14 05:54:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:54:28,077 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2022-12-14 05:54:28,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:54:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2022-12-14 05:54:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 05:54:28,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:54:28,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:54:28,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:54:28,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:54:28,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:54:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash 305630082, now seen corresponding path program 1 times [2022-12-14 05:54:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:54:28,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717498128] [2022-12-14 05:54:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:54:28,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:54:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:54:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:54:28,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:54:28,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717498128] [2022-12-14 05:54:28,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717498128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:54:28,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:54:28,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:54:28,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507372193] [2022-12-14 05:54:28,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:54:28,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:54:28,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:54:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:54:28,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:54:28,253 INFO L87 Difference]: Start difference. First operand 190 states and 253 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:54:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:54:28,360 INFO L93 Difference]: Finished difference Result 290 states and 376 transitions. [2022-12-14 05:54:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:54:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-12-14 05:54:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:54:28,363 INFO L225 Difference]: With dead ends: 290 [2022-12-14 05:54:28,363 INFO L226 Difference]: Without dead ends: 192 [2022-12-14 05:54:28,364 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 05:54:28,365 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:54:28,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 429 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:54:28,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-12-14 05:54:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-12-14 05:54:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 110 states have (on average 1.2727272727272727) internal successors, (140), 112 states have internal predecessors, (140), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-12-14 05:54:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 255 transitions. [2022-12-14 05:54:28,383 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 255 transitions. Word has length 76 [2022-12-14 05:54:28,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:54:28,383 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 255 transitions. [2022-12-14 05:54:28,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:54:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 255 transitions. [2022-12-14 05:54:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:54:28,386 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:54:28,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:54:28,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:54:28,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:54:28,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:54:28,388 INFO L85 PathProgramCache]: Analyzing trace with hash 536635227, now seen corresponding path program 1 times [2022-12-14 05:54:28,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:54:28,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175589099] [2022-12-14 05:54:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:54:28,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:54:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:54:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:54:28,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:54:28,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175589099] [2022-12-14 05:54:28,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175589099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:54:28,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:54:28,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:54:28,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042067392] [2022-12-14 05:54:28,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:54:28,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:54:28,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:54:28,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:54:28,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:54:28,491 INFO L87 Difference]: Start difference. First operand 192 states and 255 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:54:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:54:28,599 INFO L93 Difference]: Finished difference Result 419 states and 577 transitions. [2022-12-14 05:54:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:54:28,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-12-14 05:54:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:54:28,602 INFO L225 Difference]: With dead ends: 419 [2022-12-14 05:54:28,602 INFO L226 Difference]: Without dead ends: 245 [2022-12-14 05:54:28,603 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 05:54:28,604 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 59 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:54:28,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 442 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:54:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-12-14 05:54:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 240. [2022-12-14 05:54:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 144 states have (on average 1.3541666666666667) internal successors, (195), 146 states have internal predecessors, (195), 72 states have call successors, (72), 23 states have call predecessors, (72), 23 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-12-14 05:54:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 338 transitions. [2022-12-14 05:54:28,626 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 338 transitions. Word has length 81 [2022-12-14 05:54:28,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:54:28,626 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 338 transitions. [2022-12-14 05:54:28,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 05:54:28,627 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 338 transitions. [2022-12-14 05:54:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 05:54:28,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:54:28,630 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:54:28,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:54:28,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:54:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:54:28,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1361257668, now seen corresponding path program 1 times [2022-12-14 05:54:28,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:54:28,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449370890] [2022-12-14 05:54:28,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:54:28,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:54:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:54:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:54:28,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:54:28,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449370890] [2022-12-14 05:54:28,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449370890] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:54:28,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589973825] [2022-12-14 05:54:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:54:28,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:54:28,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:54:28,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:54:28,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:54:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:54:29,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:54:29,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:54:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:54:29,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:54:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:54:29,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589973825] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:54:29,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [911037134] [2022-12-14 05:54:29,165 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 05:54:29,165 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:54:29,169 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:54:29,174 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:54:29,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:54:53,323 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 05:54:53,629 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 05:54:53,934 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:55:32,415 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 579 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:55:46,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [911037134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:55:46,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:55:46,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-12-14 05:55:46,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045763239] [2022-12-14 05:55:46,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:55:46,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 05:55:46,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:55:46,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 05:55:46,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 05:55:46,076 INFO L87 Difference]: Start difference. First operand 240 states and 338 transitions. Second operand has 21 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-14 05:55:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:55:51,149 INFO L93 Difference]: Finished difference Result 527 states and 776 transitions. [2022-12-14 05:55:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 05:55:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 82 [2022-12-14 05:55:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:55:51,152 INFO L225 Difference]: With dead ends: 527 [2022-12-14 05:55:51,152 INFO L226 Difference]: Without dead ends: 305 [2022-12-14 05:55:51,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 52.1s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-12-14 05:55:51,155 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 88 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:55:51,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 3160 Invalid, 1844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-14 05:55:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-12-14 05:55:51,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 263. [2022-12-14 05:55:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 168 states have internal predecessors, (228), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-12-14 05:55:51,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 371 transitions. [2022-12-14 05:55:51,232 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 371 transitions. Word has length 82 [2022-12-14 05:55:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:55:51,232 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 371 transitions. [2022-12-14 05:55:51,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-14 05:55:51,233 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 371 transitions. [2022-12-14 05:55:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 05:55:51,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:55:51,236 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:55:51,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:55:51,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:55:51,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:55:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:55:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash 77889985, now seen corresponding path program 1 times [2022-12-14 05:55:51,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:55:51,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372925106] [2022-12-14 05:55:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:55:51,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:55:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:55:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:55:51,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:55:51,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372925106] [2022-12-14 05:55:51,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372925106] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:55:51,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:55:51,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:55:51,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733461751] [2022-12-14 05:55:51,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:55:51,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:55:51,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:55:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:55:51,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:55:51,560 INFO L87 Difference]: Start difference. First operand 263 states and 371 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 05:55:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:55:51,805 INFO L93 Difference]: Finished difference Result 629 states and 922 transitions. [2022-12-14 05:55:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:55:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 87 [2022-12-14 05:55:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:55:51,809 INFO L225 Difference]: With dead ends: 629 [2022-12-14 05:55:51,809 INFO L226 Difference]: Without dead ends: 390 [2022-12-14 05:55:51,810 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 05:55:51,810 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 57 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:55:51,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 453 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:55:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-12-14 05:55:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 385. [2022-12-14 05:55:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 257 states have (on average 1.4319066147859922) internal successors, (368), 259 states have internal predecessors, (368), 103 states have call successors, (103), 24 states have call predecessors, (103), 24 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2022-12-14 05:55:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 573 transitions. [2022-12-14 05:55:51,908 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 573 transitions. Word has length 87 [2022-12-14 05:55:51,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:55:51,909 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 573 transitions. [2022-12-14 05:55:51,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 05:55:51,909 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 573 transitions. [2022-12-14 05:55:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 05:55:51,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:55:51,910 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:55:51,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:55:51,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:55:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:55:51,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1956610413, now seen corresponding path program 1 times [2022-12-14 05:55:51,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:55:51,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328594449] [2022-12-14 05:55:51,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:55:51,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:55:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:55:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:55:52,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:55:52,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328594449] [2022-12-14 05:55:52,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328594449] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:55:52,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078394597] [2022-12-14 05:55:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:55:52,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:55:52,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:55:52,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:55:52,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:55:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:55:52,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:55:52,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:55:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:55:52,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:55:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:55:52,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078394597] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:55:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [26856084] [2022-12-14 05:55:52,308 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-12-14 05:55:52,308 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:55:52,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:55:52,309 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:55:52,309 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:56:24,599 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 05:56:24,904 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 254 for LOIs [2022-12-14 05:56:26,556 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2022-12-14 05:56:26,593 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 05:56:26,890 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 256 for LOIs [2022-12-14 05:56:30,418 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 237 for LOIs [2022-12-14 05:56:30,459 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 264 for LOIs [2022-12-14 05:56:36,297 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 438 for LOIs [2022-12-14 05:56:36,547 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2022-12-14 05:56:36,588 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-12-14 05:56:39,941 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:57:18,642 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 587 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:58:10,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [26856084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:58:10,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:58:10,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-12-14 05:58:10,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995575959] [2022-12-14 05:58:10,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:58:10,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-14 05:58:10,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:58:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-14 05:58:10,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3128, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 05:58:10,528 INFO L87 Difference]: Start difference. First operand 385 states and 573 transitions. Second operand has 53 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 32 states have internal predecessors, (46), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-12-14 05:58:57,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:58:57,664 INFO L93 Difference]: Finished difference Result 881 states and 1348 transitions. [2022-12-14 05:58:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-14 05:58:57,664 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 32 states have internal predecessors, (46), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) Word has length 88 [2022-12-14 05:58:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:58:57,668 INFO L225 Difference]: With dead ends: 881 [2022-12-14 05:58:57,668 INFO L226 Difference]: Without dead ends: 559 [2022-12-14 05:58:57,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 115.1s TimeCoverageRelationStatistics Valid=269, Invalid=4423, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 05:58:57,671 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 253 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 7276 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 5041 SdHoareTripleChecker+Invalid, 7306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 7276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:58:57,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 5041 Invalid, 7306 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [30 Valid, 7276 Invalid, 0 Unknown, 0 Unchecked, 22.0s Time] [2022-12-14 05:58:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-12-14 05:58:57,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 452. [2022-12-14 05:58:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 299 states have (on average 1.4080267558528428) internal successors, (421), 304 states have internal predecessors, (421), 121 states have call successors, (121), 33 states have call predecessors, (121), 31 states have return successors, (121), 114 states have call predecessors, (121), 120 states have call successors, (121) [2022-12-14 05:58:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 663 transitions. [2022-12-14 05:58:57,876 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 663 transitions. Word has length 88 [2022-12-14 05:58:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:58:57,876 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 663 transitions. [2022-12-14 05:58:57,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 32 states have internal predecessors, (46), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-12-14 05:58:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 663 transitions. [2022-12-14 05:58:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 05:58:57,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:58:57,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:58:57,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:58:58,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 05:58:58,080 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:58:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:58:58,081 INFO L85 PathProgramCache]: Analyzing trace with hash 897747217, now seen corresponding path program 1 times [2022-12-14 05:58:58,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:58:58,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671345021] [2022-12-14 05:58:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:58:58,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:58:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:58:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:58:58,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:58:58,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671345021] [2022-12-14 05:58:58,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671345021] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:58:58,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866411645] [2022-12-14 05:58:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:58:58,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:58:58,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:58:58,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:58:58,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:58:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:58:58,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:58:58,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:58:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:58:58,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:58:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:58:58,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866411645] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:58:58,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920629365] [2022-12-14 05:58:58,526 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2022-12-14 05:58:58,526 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:58:58,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:58:58,527 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:58:58,527 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:59:58,247 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 05:59:58,550 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 229 for LOIs [2022-12-14 05:59:58,609 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 228 for LOIs [2022-12-14 05:59:58,669 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 238 for LOIs [2022-12-14 06:00:00,056 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2022-12-14 06:00:00,131 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 216 for LOIs [2022-12-14 06:00:00,173 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 06:00:00,474 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 238 for LOIs [2022-12-14 06:00:03,270 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 240 for LOIs [2022-12-14 06:00:03,315 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 247 for LOIs [2022-12-14 06:00:05,731 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 229 for LOIs [2022-12-14 06:00:05,761 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 229 for LOIs [2022-12-14 06:00:05,797 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 436 for LOIs [2022-12-14 06:00:07,355 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:00:44,197 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 618 DAG size of output: 444 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:01:28,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1920629365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:01:28,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:01:28,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2022-12-14 06:01:28,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526591449] [2022-12-14 06:01:28,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:01:28,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-12-14 06:01:28,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:01:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-12-14 06:01:28,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3735, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 06:01:28,884 INFO L87 Difference]: Start difference. First operand 452 states and 663 transitions. Second operand has 58 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 32 states have internal predecessors, (46), 19 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2022-12-14 06:02:23,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:02:23,197 INFO L93 Difference]: Finished difference Result 943 states and 1417 transitions. [2022-12-14 06:02:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-14 06:02:23,199 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 32 states have internal predecessors, (46), 19 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) Word has length 91 [2022-12-14 06:02:23,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:02:23,201 INFO L225 Difference]: With dead ends: 943 [2022-12-14 06:02:23,201 INFO L226 Difference]: Without dead ends: 621 [2022-12-14 06:02:23,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 104.7s TimeCoverageRelationStatistics Valid=246, Invalid=5156, Unknown=0, NotChecked=0, Total=5402 [2022-12-14 06:02:23,203 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 192 mSDsluCounter, 7781 mSDsCounter, 0 mSdLazyCounter, 11249 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 8082 SdHoareTripleChecker+Invalid, 11277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 11249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:02:23,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 8082 Invalid, 11277 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [28 Valid, 11249 Invalid, 0 Unknown, 0 Unchecked, 30.4s Time] [2022-12-14 06:02:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-12-14 06:02:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 487. [2022-12-14 06:02:23,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 327 states have (on average 1.4067278287461773) internal successors, (460), 333 states have internal predecessors, (460), 125 states have call successors, (125), 36 states have call predecessors, (125), 34 states have return successors, (125), 117 states have call predecessors, (125), 124 states have call successors, (125) [2022-12-14 06:02:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 710 transitions. [2022-12-14 06:02:23,465 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 710 transitions. Word has length 91 [2022-12-14 06:02:23,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:02:23,465 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 710 transitions. [2022-12-14 06:02:23,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 32 states have internal predecessors, (46), 19 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2022-12-14 06:02:23,465 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 710 transitions. [2022-12-14 06:02:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 06:02:23,467 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:02:23,467 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:02:23,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 06:02:23,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 06:02:23,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:02:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:02:23,670 INFO L85 PathProgramCache]: Analyzing trace with hash -440601025, now seen corresponding path program 1 times [2022-12-14 06:02:23,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:02:23,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74716611] [2022-12-14 06:02:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:02:23,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:02:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:02:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:02:23,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:02:23,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74716611] [2022-12-14 06:02:23,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74716611] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:02:23,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474962477] [2022-12-14 06:02:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:02:23,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:02:23,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:02:23,753 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:02:23,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:02:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:02:23,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:02:23,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:02:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:02:23,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:02:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 06:02:24,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474962477] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:02:24,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1582220409] [2022-12-14 06:02:24,022 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-12-14 06:02:24,022 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:02:24,022 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:02:24,023 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:02:24,023 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:03:05,811 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 06:03:06,109 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 469 for LOIs [2022-12-14 06:03:36,233 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2022-12-14 06:03:36,541 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 06:03:36,908 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 467 for LOIs [2022-12-14 06:03:53,186 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 456 for LOIs [2022-12-14 06:03:54,029 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 269 for LOIs [2022-12-14 06:03:56,958 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-12-14 06:03:56,993 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-12-14 06:03:57,036 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-12-14 06:03:57,692 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:04:38,982 WARN L233 SmtUtils]: Spent 11.42s on a formula simplification. DAG size of input: 599 DAG size of output: 474 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:06:25,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1582220409] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:06:25,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:06:25,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [4, 4, 4] total 62 [2022-12-14 06:06:25,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737247303] [2022-12-14 06:06:25,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:06:25,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-14 06:06:25,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:06:25,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-14 06:06:25,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3552, Unknown=0, NotChecked=0, Total=3782 [2022-12-14 06:06:25,295 INFO L87 Difference]: Start difference. First operand 487 states and 710 transitions. Second operand has 57 states, 40 states have (on average 1.275) internal successors, (51), 37 states have internal predecessors, (51), 16 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-12-14 06:06:33,736 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 546 DAG size of output: 392 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:07:12,584 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 585 DAG size of output: 403 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:07:41,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:07:41,217 INFO L93 Difference]: Finished difference Result 977 states and 1474 transitions. [2022-12-14 06:07:41,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-14 06:07:41,218 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 40 states have (on average 1.275) internal successors, (51), 37 states have internal predecessors, (51), 16 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 90 [2022-12-14 06:07:41,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:07:41,220 INFO L225 Difference]: With dead ends: 977 [2022-12-14 06:07:41,220 INFO L226 Difference]: Without dead ends: 655 [2022-12-14 06:07:41,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 197.1s TimeCoverageRelationStatistics Valid=442, Invalid=5564, Unknown=0, NotChecked=0, Total=6006 [2022-12-14 06:07:41,223 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 256 mSDsluCounter, 6204 mSDsCounter, 0 mSdLazyCounter, 8555 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 6474 SdHoareTripleChecker+Invalid, 8581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 8555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:07:41,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 6474 Invalid, 8581 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [26 Valid, 8555 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2022-12-14 06:07:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-12-14 06:07:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 507. [2022-12-14 06:07:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 347 states have (on average 1.414985590778098) internal successors, (491), 353 states have internal predecessors, (491), 125 states have call successors, (125), 36 states have call predecessors, (125), 34 states have return successors, (125), 117 states have call predecessors, (125), 124 states have call successors, (125) [2022-12-14 06:07:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 741 transitions. [2022-12-14 06:07:41,567 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 741 transitions. Word has length 90 [2022-12-14 06:07:41,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:07:41,568 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 741 transitions. [2022-12-14 06:07:41,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 40 states have (on average 1.275) internal successors, (51), 37 states have internal predecessors, (51), 16 states have call successors, (18), 11 states have call predecessors, (18), 8 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-12-14 06:07:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 741 transitions. [2022-12-14 06:07:41,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 06:07:41,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:07:41,570 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:07:41,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 06:07:41,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:07:41,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:07:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:07:41,773 INFO L85 PathProgramCache]: Analyzing trace with hash 19578903, now seen corresponding path program 1 times [2022-12-14 06:07:41,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:07:41,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946638200] [2022-12-14 06:07:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:07:41,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:07:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:07:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:07:41,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:07:41,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946638200] [2022-12-14 06:07:41,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946638200] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:07:41,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461985110] [2022-12-14 06:07:41,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:07:41,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:07:41,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:07:41,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:07:41,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4914b2f8-2fff-416d-ab9a-5d9f8d9bcda7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 06:07:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:07:42,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:07:42,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:07:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:07:42,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:07:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:07:42,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461985110] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:07:42,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [245476920] [2022-12-14 06:07:42,137 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2022-12-14 06:07:42,138 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:07:42,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:07:42,138 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:07:42,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:08:13,340 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 06:08:13,644 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 254 for LOIs [2022-12-14 06:08:15,292 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2022-12-14 06:08:15,328 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 06:08:15,631 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 256 for LOIs [2022-12-14 06:08:18,947 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 240 for LOIs [2022-12-14 06:08:18,990 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 264 for LOIs