./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/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_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/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_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/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 f29a19c3efa542dcf2ceb090606fb32840c0b6e985b77630bcd852a7818d8a39 --- 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 09:50:38,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:50:38,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:50:38,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:50:38,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:50:38,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:50:38,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:50:38,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:50:38,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:50:38,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:50:38,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:50:38,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:50:38,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:50:38,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:50:38,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:50:38,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:50:38,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:50:38,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:50:38,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:50:38,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:50:38,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:50:38,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:50:38,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:50:38,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:50:38,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:50:38,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:50:38,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:50:38,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:50:38,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:50:38,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:50:38,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:50:38,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:50:38,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:50:38,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:50:38,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:50:38,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:50:38,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:50:38,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:50:38,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:50:38,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:50:38,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:50:38,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:50:38,735 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:50:38,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:50:38,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:50:38,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:50:38,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:50:38,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:50:38,737 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:50:38,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:50:38,737 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:50:38,737 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:50:38,737 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:50:38,737 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:50:38,738 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:50:38,738 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:50:38,738 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:50:38,738 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:50:38,738 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:50:38,739 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:50:38,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:50:38,739 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:50:38,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:50:38,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:50:38,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:50:38,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:50:38,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:50:38,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:50:38,741 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:50:38,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:50:38,741 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:50:38,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:50:38,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:50:38,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:50:38,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:50:38,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:50:38,742 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:50:38,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:50:38,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:50:38,743 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:50:38,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:50:38,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:50:38,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:50:38,744 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_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29a19c3efa542dcf2ceb090606fb32840c0b6e985b77630bcd852a7818d8a39 [2022-12-14 09:50:38,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:50:38,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:50:38,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:50:38,962 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:50:38,962 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:50:38,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2022-12-14 09:50:41,542 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:50:41,726 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:50:41,727 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2022-12-14 09:50:41,739 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/data/8984fb23b/ce66e625ca1c4aadb97c238ec28323a4/FLAGe08b997f4 [2022-12-14 09:50:41,749 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/data/8984fb23b/ce66e625ca1c4aadb97c238ec28323a4 [2022-12-14 09:50:41,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:50:41,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:50:41,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:50:41,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:50:41,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:50:41,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:50:41" (1/1) ... [2022-12-14 09:50:41,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89d817a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:41, skipping insertion in model container [2022-12-14 09:50:41,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:50:41" (1/1) ... [2022-12-14 09:50:41,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:50:41,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:50:41,996 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,042 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,043 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,046 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,139 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,143 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,143 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,144 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,152 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,153 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,153 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_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c[63627,63640] [2022-12-14 09:50:42,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:50:42,168 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:50:42,188 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,190 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,191 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,193 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,226 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,227 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,228 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,229 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,232 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,233 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:50:42,233 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_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c[63627,63640] [2022-12-14 09:50:42,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:50:42,275 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:50:42,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42 WrapperNode [2022-12-14 09:50:42,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:50:42,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:50:42,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:50:42,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:50:42,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,331 INFO L138 Inliner]: procedures = 131, calls = 224, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 1089 [2022-12-14 09:50:42,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:50:42,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:50:42,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:50:42,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:50:42,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,363 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:50:42,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:50:42,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:50:42,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:50:42,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (1/1) ... [2022-12-14 09:50:42,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:50:42,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:50:42,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:50:42,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:50:42,425 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 09:50:42,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 09:50:42,426 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 09:50:42,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 09:50:42,426 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 09:50:42,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 09:50:42,426 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 09:50:42,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 09:50:42,426 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 09:50:42,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 09:50:42,426 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 09:50:42,426 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 09:50:42,426 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 09:50:42,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 09:50:42,427 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 09:50:42,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 09:50:42,427 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 09:50:42,427 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 09:50:42,427 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 09:50:42,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 09:50:42,427 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 09:50:42,427 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 09:50:42,427 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 09:50:42,427 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 09:50:42,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 09:50:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 09:50:42,428 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 09:50:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 09:50:42,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 09:50:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:50:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 09:50:42,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 09:50:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 09:50:42,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 09:50:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 09:50:42,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 09:50:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 09:50:42,429 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 09:50:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 09:50:42,429 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 09:50:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 09:50:42,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 09:50:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 09:50:42,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 09:50:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 09:50:42,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 09:50:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:50:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 09:50:42,429 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 09:50:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 09:50:42,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 09:50:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:50:42,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:50:42,580 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:50:42,582 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:50:43,161 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:50:43,533 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:50:43,534 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:50:43,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:50:43 BoogieIcfgContainer [2022-12-14 09:50:43,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:50:43,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:50:43,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:50:43,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:50:43,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:50:41" (1/3) ... [2022-12-14 09:50:43,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7198b630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:50:43, skipping insertion in model container [2022-12-14 09:50:43,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:50:42" (2/3) ... [2022-12-14 09:50:43,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7198b630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:50:43, skipping insertion in model container [2022-12-14 09:50:43,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:50:43" (3/3) ... [2022-12-14 09:50:43,542 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product26.cil.c [2022-12-14 09:50:43,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:50:43,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:50:43,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:50:43,598 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;@4715176d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:50:43,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:50:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 118 states have internal predecessors, (148), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-12-14 09:50:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 09:50:43,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:50:43,612 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] [2022-12-14 09:50:43,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:50:43,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:50:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1205785968, now seen corresponding path program 1 times [2022-12-14 09:50:43,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:50:43,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116636384] [2022-12-14 09:50:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:50:43,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:50:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:50:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 09:50:43,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:50:43,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116636384] [2022-12-14 09:50:43,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116636384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:50:43,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:50:43,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:50:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34159369] [2022-12-14 09:50:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:50:43,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 09:50:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:50:43,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 09:50:43,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:50:43,852 INFO L87 Difference]: Start difference. First operand has 201 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 118 states have internal predecessors, (148), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:50:43,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:50:43,975 INFO L93 Difference]: Finished difference Result 310 states and 415 transitions. [2022-12-14 09:50:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 09:50:43,978 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 73 [2022-12-14 09:50:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:50:43,989 INFO L225 Difference]: With dead ends: 310 [2022-12-14 09:50:43,990 INFO L226 Difference]: Without dead ends: 198 [2022-12-14 09:50:43,995 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 09:50:43,998 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:50:43,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:50:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-12-14 09:50:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-12-14 09:50:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 115 states have internal predecessors, (142), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-12-14 09:50:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2022-12-14 09:50:44,039 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 73 [2022-12-14 09:50:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:50:44,040 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2022-12-14 09:50:44,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:50:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2022-12-14 09:50:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 09:50:44,043 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:50:44,043 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] [2022-12-14 09:50:44,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:50:44,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:50:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:50:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1149324182, now seen corresponding path program 1 times [2022-12-14 09:50:44,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:50:44,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662660811] [2022-12-14 09:50:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:50:44,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:50:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:50:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 09:50:44,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:50:44,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662660811] [2022-12-14 09:50:44,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662660811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:50:44,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:50:44,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:50:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325544493] [2022-12-14 09:50:44,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:50:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:50:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:50:44,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:50:44,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:50:44,236 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:50:44,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:50:44,356 INFO L93 Difference]: Finished difference Result 306 states and 400 transitions. [2022-12-14 09:50:44,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:50:44,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-12-14 09:50:44,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:50:44,358 INFO L225 Difference]: With dead ends: 306 [2022-12-14 09:50:44,359 INFO L226 Difference]: Without dead ends: 200 [2022-12-14 09:50:44,360 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 09:50:44,361 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:50:44,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:50:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-12-14 09:50:44,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-12-14 09:50:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 117 states have internal predecessors, (144), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-12-14 09:50:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 267 transitions. [2022-12-14 09:50:44,375 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 267 transitions. Word has length 74 [2022-12-14 09:50:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:50:44,375 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 267 transitions. [2022-12-14 09:50:44,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:50:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 267 transitions. [2022-12-14 09:50:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 09:50:44,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:50:44,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:50:44,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:50:44,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:50:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:50:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash 706859030, now seen corresponding path program 1 times [2022-12-14 09:50:44,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:50:44,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985710343] [2022-12-14 09:50:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:50:44,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:50:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:50:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 09:50:44,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:50:44,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985710343] [2022-12-14 09:50:44,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985710343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:50:44,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:50:44,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:50:44,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99987368] [2022-12-14 09:50:44,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:50:44,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:50:44,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:50:44,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:50:44,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:50:44,452 INFO L87 Difference]: Start difference. First operand 200 states and 267 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:50:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:50:44,554 INFO L93 Difference]: Finished difference Result 435 states and 601 transitions. [2022-12-14 09:50:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:50:44,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2022-12-14 09:50:44,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:50:44,557 INFO L225 Difference]: With dead ends: 435 [2022-12-14 09:50:44,557 INFO L226 Difference]: Without dead ends: 253 [2022-12-14 09:50:44,557 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 09:50:44,558 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 59 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:50:44,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 466 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:50:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-12-14 09:50:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 248. [2022-12-14 09:50:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 151 states have internal predecessors, (199), 76 states have call successors, (76), 24 states have call predecessors, (76), 24 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-12-14 09:50:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 350 transitions. [2022-12-14 09:50:44,575 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 350 transitions. Word has length 79 [2022-12-14 09:50:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:50:44,575 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 350 transitions. [2022-12-14 09:50:44,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:50:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 350 transitions. [2022-12-14 09:50:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 09:50:44,577 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:50:44,577 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:50:44,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:50:44,578 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:50:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:50:44,578 INFO L85 PathProgramCache]: Analyzing trace with hash -15611214, now seen corresponding path program 1 times [2022-12-14 09:50:44,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:50:44,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399759863] [2022-12-14 09:50:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:50:44,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:50:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:50:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 09:50:44,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:50:44,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399759863] [2022-12-14 09:50:44,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399759863] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:50:44,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28868510] [2022-12-14 09:50:44,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:50:44,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:50:44,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:50:44,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:50:44,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:50:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:50:44,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 09:50:44,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:50:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 09:50:44,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:50:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 09:50:45,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28868510] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:50:45,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [932097764] [2022-12-14 09:50:45,067 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-12-14 09:50:45,067 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:50:45,071 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:50:45,076 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:50:45,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:51:23,659 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 09:51:23,985 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 09:51:24,311 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:52:10,003 WARN L233 SmtUtils]: Spent 11.07s on a formula simplification. DAG size of input: 589 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:52:21,530 WARN L233 SmtUtils]: Spent 11.25s on a formula simplification. DAG size of input: 591 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:52:33,458 WARN L233 SmtUtils]: Spent 11.63s on a formula simplification. DAG size of input: 590 DAG size of output: 464 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:52:46,505 WARN L233 SmtUtils]: Spent 12.73s on a formula simplification. DAG size of input: 588 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:52:48,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [932097764] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:52:48,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:52:48,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-12-14 09:52:48,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269540313] [2022-12-14 09:52:48,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:52:48,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 09:52:48,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:52:48,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 09:52:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-12-14 09:52:48,616 INFO L87 Difference]: Start difference. First operand 248 states and 350 transitions. Second operand has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-14 09:52:56,233 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 511 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:53:02,076 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 511 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:53:07,450 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 518 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:53:12,806 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 509 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:53:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:53:17,881 INFO L93 Difference]: Finished difference Result 547 states and 807 transitions. [2022-12-14 09:53:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 09:53:17,882 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 80 [2022-12-14 09:53:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:53:17,883 INFO L225 Difference]: With dead ends: 547 [2022-12-14 09:53:17,883 INFO L226 Difference]: Without dead ends: 317 [2022-12-14 09:53:17,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 107.2s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-12-14 09:53:17,885 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 234 mSDsluCounter, 2936 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:53:17,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 3161 Invalid, 1725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-12-14 09:53:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-12-14 09:53:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 276. [2022-12-14 09:53:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 174 states have (on average 1.367816091954023) internal successors, (238), 178 states have internal predecessors, (238), 76 states have call successors, (76), 25 states have call predecessors, (76), 25 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-12-14 09:53:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 389 transitions. [2022-12-14 09:53:17,989 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 389 transitions. Word has length 80 [2022-12-14 09:53:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:53:17,989 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 389 transitions. [2022-12-14 09:53:17,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-14 09:53:17,989 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 389 transitions. [2022-12-14 09:53:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 09:53:17,991 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:53:17,991 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:53:17,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:53:18,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:53:18,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:53:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:53:18,194 INFO L85 PathProgramCache]: Analyzing trace with hash 620161371, now seen corresponding path program 1 times [2022-12-14 09:53:18,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:53:18,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044154948] [2022-12-14 09:53:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:53:18,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:53:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:53:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 09:53:18,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:53:18,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044154948] [2022-12-14 09:53:18,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044154948] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:53:18,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350222057] [2022-12-14 09:53:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:53:18,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:53:18,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:53:18,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:53:18,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:53:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:53:18,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 09:53:18,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:53:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 09:53:18,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:53:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 09:53:18,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350222057] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:53:18,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225578250] [2022-12-14 09:53:18,593 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 09:53:18,593 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:53:18,594 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:53:18,594 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:53:18,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:53:59,348 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 09:53:59,673 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 09:53:59,993 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-12-14 09:54:01,642 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-12-14 09:54:01,681 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2022-12-14 09:54:02,415 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 257 for LOIs [2022-12-14 09:54:09,294 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 435 for LOIs [2022-12-14 09:54:09,920 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-12-14 09:54:13,413 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 222 for LOIs [2022-12-14 09:54:13,449 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:54:52,765 WARN L233 SmtUtils]: Spent 7.05s 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 09:55:04,720 WARN L233 SmtUtils]: Spent 11.68s on a formula simplification. DAG size of input: 589 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:56:02,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [225578250] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:56:02,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:56:02,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-12-14 09:56:02,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537539633] [2022-12-14 09:56:02,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:56:02,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-14 09:56:02,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:56:02,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-14 09:56:02,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3262, Unknown=0, NotChecked=0, Total=3422 [2022-12-14 09:56:02,064 INFO L87 Difference]: Start difference. First operand 276 states and 389 transitions. Second operand has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 09:56:19,288 WARN L233 SmtUtils]: Spent 10.83s on a formula simplification. DAG size of input: 504 DAG size of output: 456 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:57:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:57:15,780 INFO L93 Difference]: Finished difference Result 663 states and 976 transitions. [2022-12-14 09:57:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-14 09:57:15,781 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 86 [2022-12-14 09:57:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:57:15,784 INFO L225 Difference]: With dead ends: 663 [2022-12-14 09:57:15,784 INFO L226 Difference]: Without dead ends: 433 [2022-12-14 09:57:15,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 159.2s TimeCoverageRelationStatistics Valid=257, Invalid=5293, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 09:57:15,788 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 173 mSDsluCounter, 6318 mSDsCounter, 0 mSdLazyCounter, 8080 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 6549 SdHoareTripleChecker+Invalid, 8107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 8080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:57:15,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 6549 Invalid, 8107 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [27 Valid, 8080 Invalid, 0 Unknown, 0 Unchecked, 22.4s Time] [2022-12-14 09:57:15,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-12-14 09:57:15,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 350. [2022-12-14 09:57:15,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 230 states have (on average 1.3608695652173912) internal successors, (313), 235 states have internal predecessors, (313), 88 states have call successors, (88), 33 states have call predecessors, (88), 31 states have return successors, (88), 83 states have call predecessors, (88), 87 states have call successors, (88) [2022-12-14 09:57:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 489 transitions. [2022-12-14 09:57:15,996 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 489 transitions. Word has length 86 [2022-12-14 09:57:15,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:57:15,996 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 489 transitions. [2022-12-14 09:57:15,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 09:57:15,997 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 489 transitions. [2022-12-14 09:57:15,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 09:57:15,999 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:57:15,999 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:57:16,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:57:16,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:57:16,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:57:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:57:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash -475451674, now seen corresponding path program 1 times [2022-12-14 09:57:16,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:57:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22901742] [2022-12-14 09:57:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:57:16,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:57:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:57:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 09:57:16,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:57:16,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22901742] [2022-12-14 09:57:16,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22901742] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:57:16,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215069777] [2022-12-14 09:57:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:57:16,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:57:16,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:57:16,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:57:16,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:57:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:57:16,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 09:57:16,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:57:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 09:57:16,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:57:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 09:57:16,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215069777] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:57:16,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [19278104] [2022-12-14 09:57:16,628 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-12-14 09:57:16,628 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:57:16,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:57:16,629 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:57:16,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:57:58,410 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 09:57:58,731 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 09:57:59,051 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-12-14 09:58:00,744 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2022-12-14 09:58:00,783 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-12-14 09:58:01,527 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 257 for LOIs [2022-12-14 09:58:13,218 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 435 for LOIs [2022-12-14 09:58:14,178 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-12-14 09:58:19,342 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 437 for LOIs [2022-12-14 09:58:19,624 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 220 for LOIs [2022-12-14 09:58:19,660 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:59:02,316 WARN L233 SmtUtils]: Spent 7.61s 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 09:59:12,878 WARN L233 SmtUtils]: Spent 10.28s on a formula simplification. DAG size of input: 589 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:00:23,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [19278104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:23,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:00:23,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2022-12-14 10:00:23,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804728393] [2022-12-14 10:00:23,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:23,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-12-14 10:00:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-12-14 10:00:23,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3734, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 10:00:23,202 INFO L87 Difference]: Start difference. First operand 350 states and 489 transitions. Second operand has 58 states, 39 states have (on average 1.205128205128205) internal successors, (47), 36 states have internal predecessors, (47), 18 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-12-14 10:00:40,591 WARN L233 SmtUtils]: Spent 10.83s on a formula simplification. DAG size of input: 504 DAG size of output: 456 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:01:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:41,100 INFO L93 Difference]: Finished difference Result 530 states and 745 transitions. [2022-12-14 10:01:41,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-14 10:01:41,101 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 39 states have (on average 1.205128205128205) internal successors, (47), 36 states have internal predecessors, (47), 18 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 91 [2022-12-14 10:01:41,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:41,103 INFO L225 Difference]: With dead ends: 530 [2022-12-14 10:01:41,103 INFO L226 Difference]: Without dead ends: 422 [2022-12-14 10:01:41,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 211 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 180.1s TimeCoverageRelationStatistics Valid=292, Invalid=6350, Unknown=0, NotChecked=0, Total=6642 [2022-12-14 10:01:41,105 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 182 mSDsluCounter, 6199 mSDsCounter, 0 mSdLazyCounter, 7671 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 6425 SdHoareTripleChecker+Invalid, 7687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 7671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:41,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 6425 Invalid, 7687 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [16 Valid, 7671 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2022-12-14 10:01:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-12-14 10:01:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 347. [2022-12-14 10:01:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.3524229074889869) internal successors, (307), 232 states have internal predecessors, (307), 87 states have call successors, (87), 34 states have call predecessors, (87), 32 states have return successors, (87), 82 states have call predecessors, (87), 86 states have call successors, (87) [2022-12-14 10:01:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 481 transitions. [2022-12-14 10:01:41,325 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 481 transitions. Word has length 91 [2022-12-14 10:01:41,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:41,325 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 481 transitions. [2022-12-14 10:01:41,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 39 states have (on average 1.205128205128205) internal successors, (47), 36 states have internal predecessors, (47), 18 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-12-14 10:01:41,325 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 481 transitions. [2022-12-14 10:01:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 10:01:41,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:41,327 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:01:41,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:01:41,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 10:01:41,528 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:01:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash -796440108, now seen corresponding path program 1 times [2022-12-14 10:01:41,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:41,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519798126] [2022-12-14 10:01:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:01:41,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:41,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519798126] [2022-12-14 10:01:41,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519798126] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:01:41,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451113631] [2022-12-14 10:01:41,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:41,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:01:41,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:01:41,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:01:41,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:01:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:41,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:01:41,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:01:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:01:41,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:01:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:01:41,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451113631] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:01:41,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [587412536] [2022-12-14 10:01:41,940 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-12-14 10:01:41,940 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:01:41,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:01:41,941 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:01:41,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:02:27,157 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:02:27,475 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-12-14 10:02:27,542 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-12-14 10:02:27,624 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-12-14 10:02:27,693 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:02:28,021 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:03:06,353 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 632 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:03:17,429 WARN L233 SmtUtils]: Spent 10.77s on a formula simplification. DAG size of input: 634 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:03:28,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [587412536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:03:28,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:03:28,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 10:03:28,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911625198] [2022-12-14 10:03:28,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:03:28,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 10:03:28,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:03:28,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 10:03:28,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 10:03:28,182 INFO L87 Difference]: Start difference. First operand 347 states and 481 transitions. Second operand has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 10:03:37,555 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 558 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:03:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:03:47,799 INFO L93 Difference]: Finished difference Result 672 states and 975 transitions. [2022-12-14 10:03:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 10:03:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 89 [2022-12-14 10:03:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:03:47,801 INFO L225 Difference]: With dead ends: 672 [2022-12-14 10:03:47,801 INFO L226 Difference]: Without dead ends: 442 [2022-12-14 10:03:47,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 68.2s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 10:03:47,802 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 63 mSDsluCounter, 4242 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 4465 SdHoareTripleChecker+Invalid, 3698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:03:47,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 4465 Invalid, 3698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3688 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-12-14 10:03:47,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-12-14 10:03:48,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 383. [2022-12-14 10:03:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 257 states have (on average 1.3579766536964981) internal successors, (349), 262 states have internal predecessors, (349), 90 states have call successors, (90), 37 states have call predecessors, (90), 35 states have return successors, (90), 85 states have call predecessors, (90), 89 states have call successors, (90) [2022-12-14 10:03:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 529 transitions. [2022-12-14 10:03:48,092 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 529 transitions. Word has length 89 [2022-12-14 10:03:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:03:48,092 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 529 transitions. [2022-12-14 10:03:48,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 10:03:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 529 transitions. [2022-12-14 10:03:48,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 10:03:48,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:03:48,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:03:48,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 10:03:48,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 10:03:48,296 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:03:48,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:03:48,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1061504816, now seen corresponding path program 1 times [2022-12-14 10:03:48,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:03:48,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793808473] [2022-12-14 10:03:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:03:48,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:03:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:03:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:03:48,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:03:48,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793808473] [2022-12-14 10:03:48,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793808473] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:03:48,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699704885] [2022-12-14 10:03:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:03:48,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:03:48,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:03:48,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:03:48,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e339e1e2-294c-4ba7-85a6-a591cbc1fe5d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:03:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:03:48,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:03:48,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:03:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:03:48,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:03:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 10:03:48,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699704885] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:03:48,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1336209317] [2022-12-14 10:03:48,673 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-12-14 10:03:48,673 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:03:48,673 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:03:48,673 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:03:48,673 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:04:42,054 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 10:04:42,380 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:04:42,695 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-12-14 10:04:44,421 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 10:04:44,462 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 255 for LOIs [2022-12-14 10:04:45,221 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 264 for LOIs