./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur --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 ac03fde86830071a4c6b2e5721972db0abe9813dd0e80632e775695a294f996c --- 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-38b53e6 [2022-11-26 00:38:25,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:38:25,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:38:25,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:38:25,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:38:25,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:38:25,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:38:25,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:38:25,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:38:25,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:38:25,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:38:25,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:38:25,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:38:25,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:38:25,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:38:25,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:38:25,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:38:25,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:38:25,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:38:25,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:38:25,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:38:25,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:38:25,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:38:25,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:38:25,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:38:25,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:38:25,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:38:25,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:38:25,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:38:25,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:38:25,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:38:25,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:38:25,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:38:25,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:38:25,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:38:25,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:38:25,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:38:25,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:38:25,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:38:25,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:38:25,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:38:25,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:38:25,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:38:25,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:38:25,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:38:25,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:38:25,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:38:25,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:38:25,797 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:38:25,798 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:38:25,798 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:38:25,798 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:38:25,798 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:38:25,798 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:38:25,799 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:38:25,799 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:38:25,799 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:38:25,799 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:38:25,800 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:38:25,800 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:38:25,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:38:25,801 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:38:25,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:38:25,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:38:25,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:38:25,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:38:25,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:38:25,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:38:25,803 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:38:25,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:38:25,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:38:25,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:38:25,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:38:25,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:38:25,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:38:25,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:38:25,804 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:38:25,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:38:25,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:38:25,805 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:38:25,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:38:25,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:38:25,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:38:25,806 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_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac03fde86830071a4c6b2e5721972db0abe9813dd0e80632e775695a294f996c [2022-11-26 00:38:26,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:38:26,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:38:26,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:38:26,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:38:26,143 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:38:26,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c [2022-11-26 00:38:29,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:38:29,527 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:38:29,534 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c [2022-11-26 00:38:29,565 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/data/2e5033fff/4d0c32faf8b34b279535e3fddb411a58/FLAGbc51e781a [2022-11-26 00:38:29,579 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/data/2e5033fff/4d0c32faf8b34b279535e3fddb411a58 [2022-11-26 00:38:29,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:38:29,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:38:29,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:38:29,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:38:29,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:38:29,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:38:29" (1/1) ... [2022-11-26 00:38:29,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f80af3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:29, skipping insertion in model container [2022-11-26 00:38:29,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:38:29" (1/1) ... [2022-11-26 00:38:29,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:38:29,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:38:29,975 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:29,986 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:29,990 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:29,996 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,024 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,027 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,041 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_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c[14691,14704] [2022-11-26 00:38:30,133 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,134 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,138 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:38:30,261 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:38:30,286 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,302 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,303 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,304 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,309 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,321 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,325 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_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c[14691,14704] [2022-11-26 00:38:30,358 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,359 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,366 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:38:30,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:38:30,520 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:38:30,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30 WrapperNode [2022-11-26 00:38:30,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:38:30,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:38:30,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:38:30,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:38:30,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,686 INFO L138 Inliner]: procedures = 133, calls = 225, calls flagged for inlining = 65, calls inlined = 62, statements flattened = 1120 [2022-11-26 00:38:30,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:38:30,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:38:30,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:38:30,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:38:30,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:38:30,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:38:30,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:38:30,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:38:30,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (1/1) ... [2022-11-26 00:38:30,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:38:30,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:38:30,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:38:30,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:38:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-26 00:38:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-26 00:38:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-26 00:38:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-26 00:38:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-26 00:38:30,862 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-26 00:38:30,862 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-26 00:38:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-26 00:38:30,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-26 00:38:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-26 00:38:30,863 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-26 00:38:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-26 00:38:30,864 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-26 00:38:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-26 00:38:30,864 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-26 00:38:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-26 00:38:30,864 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-26 00:38:30,865 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-26 00:38:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-26 00:38:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-26 00:38:30,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-26 00:38:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-26 00:38:30,865 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-26 00:38:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-26 00:38:30,866 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-26 00:38:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:38:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-26 00:38:30,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-26 00:38:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-26 00:38:30,867 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-26 00:38:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-26 00:38:30,868 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-26 00:38:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-26 00:38:30,869 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-26 00:38:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-26 00:38:30,869 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-26 00:38:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-26 00:38:30,869 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-26 00:38:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-26 00:38:30,869 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-26 00:38:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-26 00:38:30,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-26 00:38:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:38:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-26 00:38:30,870 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-26 00:38:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-26 00:38:30,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-26 00:38:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:38:30,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:38:31,162 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:38:31,166 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:38:32,185 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:38:32,874 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:38:32,874 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:38:32,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:38:32 BoogieIcfgContainer [2022-11-26 00:38:32,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:38:32,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:38:32,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:38:32,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:38:32,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:38:29" (1/3) ... [2022-11-26 00:38:32,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3183a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:38:32, skipping insertion in model container [2022-11-26 00:38:32,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:38:30" (2/3) ... [2022-11-26 00:38:32,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3183a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:38:32, skipping insertion in model container [2022-11-26 00:38:32,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:38:32" (3/3) ... [2022-11-26 00:38:32,893 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product27.cil.c [2022-11-26 00:38:32,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:38:32,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:38:32,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:38:32,993 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;@60cdd75f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:38:32,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:38:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 109 states have (on average 1.311926605504587) internal successors, (143), 112 states have internal predecessors, (143), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-26 00:38:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-26 00:38:33,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:33,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:33,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:33,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:33,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1431102340, now seen corresponding path program 1 times [2022-11-26 00:38:33,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:33,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276891642] [2022-11-26 00:38:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:33,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:38:33,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:33,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276891642] [2022-11-26 00:38:33,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276891642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:33,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:33,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:38:33,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900004120] [2022-11-26 00:38:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:33,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:38:33,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:33,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:38:33,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:38:33,468 INFO L87 Difference]: Start difference. First operand has 191 states, 109 states have (on average 1.311926605504587) internal successors, (143), 112 states have internal predecessors, (143), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-26 00:38:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:33,667 INFO L93 Difference]: Finished difference Result 290 states and 389 transitions. [2022-11-26 00:38:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:38:33,671 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2022-11-26 00:38:33,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:33,692 INFO L225 Difference]: With dead ends: 290 [2022-11-26 00:38:33,692 INFO L226 Difference]: Without dead ends: 188 [2022-11-26 00:38:33,702 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 [2022-11-26 00:38:33,706 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:33,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:38:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-26 00:38:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-26 00:38:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 107 states have (on average 1.280373831775701) internal successors, (137), 109 states have internal predecessors, (137), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-26 00:38:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 252 transitions. [2022-11-26 00:38:33,783 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 252 transitions. Word has length 60 [2022-11-26 00:38:33,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:33,784 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 252 transitions. [2022-11-26 00:38:33,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-26 00:38:33,785 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 252 transitions. [2022-11-26 00:38:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-26 00:38:33,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:33,789 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:33,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:38:33,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:33,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1261232434, now seen corresponding path program 1 times [2022-11-26 00:38:33,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:33,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254940191] [2022-11-26 00:38:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:33,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:38:34,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:34,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254940191] [2022-11-26 00:38:34,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254940191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:34,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:34,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:38:34,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818853226] [2022-11-26 00:38:34,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:34,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:38:34,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:38:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:38:34,104 INFO L87 Difference]: Start difference. First operand 188 states and 252 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-26 00:38:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:34,272 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2022-11-26 00:38:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:38:34,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-26 00:38:34,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:34,276 INFO L225 Difference]: With dead ends: 286 [2022-11-26 00:38:34,276 INFO L226 Difference]: Without dead ends: 190 [2022-11-26 00:38:34,277 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 [2022-11-26 00:38:34,278 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:34,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:38:34,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-26 00:38:34,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-26 00:38:34,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 109 states have (on average 1.275229357798165) internal successors, (139), 111 states have internal predecessors, (139), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-26 00:38:34,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 254 transitions. [2022-11-26 00:38:34,304 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 254 transitions. Word has length 61 [2022-11-26 00:38:34,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:34,305 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 254 transitions. [2022-11-26 00:38:34,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-26 00:38:34,305 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 254 transitions. [2022-11-26 00:38:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-26 00:38:34,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:34,317 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:38:34,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:38:34,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:34,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash -433821520, now seen corresponding path program 1 times [2022-11-26 00:38:34,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:34,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482654960] [2022-11-26 00:38:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:34,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:38:34,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:34,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482654960] [2022-11-26 00:38:34,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482654960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:34,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:34,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:38:34,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539615174] [2022-11-26 00:38:34,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:34,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:38:34,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:34,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:38:34,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:38:34,543 INFO L87 Difference]: Start difference. First operand 190 states and 254 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-26 00:38:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:34,694 INFO L93 Difference]: Finished difference Result 415 states and 575 transitions. [2022-11-26 00:38:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:38:34,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-26 00:38:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:34,697 INFO L225 Difference]: With dead ends: 415 [2022-11-26 00:38:34,697 INFO L226 Difference]: Without dead ends: 243 [2022-11-26 00:38:34,702 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 [2022-11-26 00:38:34,706 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 59 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:34,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 435 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:38:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-26 00:38:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 238. [2022-11-26 00:38:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 143 states have (on average 1.3566433566433567) internal successors, (194), 145 states have internal predecessors, (194), 72 states have call successors, (72), 22 states have call predecessors, (72), 22 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-26 00:38:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 337 transitions. [2022-11-26 00:38:34,746 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 337 transitions. Word has length 66 [2022-11-26 00:38:34,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:34,748 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 337 transitions. [2022-11-26 00:38:34,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-26 00:38:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 337 transitions. [2022-11-26 00:38:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-26 00:38:34,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:34,751 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] [2022-11-26 00:38:34,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:38:34,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:34,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash 132415004, now seen corresponding path program 1 times [2022-11-26 00:38:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:34,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072825061] [2022-11-26 00:38:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:38:34,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:34,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072825061] [2022-11-26 00:38:34,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072825061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:38:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921545397] [2022-11-26 00:38:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:34,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:38:34,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:38:34,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:38:34,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:38:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:35,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:38:35,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:38:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:38:35,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:38:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:38:35,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921545397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:38:35,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [207075922] [2022-11-26 00:38:35,607 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-26 00:38:35,607 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:38:35,611 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:38:35,616 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:38:35,617 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:39:12,382 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-26 00:39:12,717 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-26 00:39:13,057 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 257 for LOIs [2022-11-26 00:39:15,222 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-11-26 00:39:15,298 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-11-26 00:39:19,444 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 267 for LOIs [2022-11-26 00:39:22,886 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 249 for LOIs [2022-11-26 00:39:22,923 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 249 for LOIs [2022-11-26 00:39:22,969 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-26 00:39:28,472 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 240 for LOIs [2022-11-26 00:39:28,530 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:39:42,963 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:39:49,257 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:10,686 WARN L233 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 482 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:17,182 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 492 DAG size of output: 275 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:23,581 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 504 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:30,939 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 514 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:37,005 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 567 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:45,535 WARN L233 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 569 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:40:53,300 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 569 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:00,921 WARN L233 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 567 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:13,196 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 477 DAG size of output: 273 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:41:20,814 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 499 DAG size of output: 277 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:42:10,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [207075922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:42:10,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:42:10,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-26 00:42:10,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313735030] [2022-11-26 00:42:10,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:42:10,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-26 00:42:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:42:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-26 00:42:10,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2715, Unknown=0, NotChecked=0, Total=2862 [2022-11-26 00:42:10,406 INFO L87 Difference]: Start difference. First operand 238 states and 337 transitions. Second operand has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-26 00:43:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:11,971 INFO L93 Difference]: Finished difference Result 636 states and 969 transitions. [2022-11-26 00:43:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-26 00:43:11,973 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 67 [2022-11-26 00:43:11,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:11,977 INFO L225 Difference]: With dead ends: 636 [2022-11-26 00:43:11,977 INFO L226 Difference]: Without dead ends: 416 [2022-11-26 00:43:11,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 189.7s TimeCoverageRelationStatistics Valid=202, Invalid=3580, Unknown=0, NotChecked=0, Total=3782 [2022-11-26 00:43:11,981 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 271 mSDsluCounter, 5291 mSDsCounter, 0 mSdLazyCounter, 7380 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 5550 SdHoareTripleChecker+Invalid, 7419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 7380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:11,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 5550 Invalid, 7419 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [39 Valid, 7380 Invalid, 0 Unknown, 0 Unchecked, 32.9s Time] [2022-11-26 00:43:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-11-26 00:43:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 310. [2022-11-26 00:43:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 196 states have (on average 1.3520408163265305) internal successors, (265), 199 states have internal predecessors, (265), 84 states have call successors, (84), 31 states have call predecessors, (84), 29 states have return successors, (84), 79 states have call predecessors, (84), 83 states have call successors, (84) [2022-11-26 00:43:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 433 transitions. [2022-11-26 00:43:12,163 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 433 transitions. Word has length 67 [2022-11-26 00:43:12,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:12,164 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 433 transitions. [2022-11-26 00:43:12,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-26 00:43:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 433 transitions. [2022-11-26 00:43:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-26 00:43:12,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:12,167 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:12,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:43:12,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:12,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:43:12,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash 58796477, now seen corresponding path program 1 times [2022-11-26 00:43:12,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:12,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282231868] [2022-11-26 00:43:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:12,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:43:12,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:12,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282231868] [2022-11-26 00:43:12,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282231868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:12,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:12,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:43:12,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461532944] [2022-11-26 00:43:12,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:12,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:43:12,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:43:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:43:12,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:43:12,480 INFO L87 Difference]: Start difference. First operand 310 states and 433 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-26 00:43:12,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:12,924 INFO L93 Difference]: Finished difference Result 722 states and 1046 transitions. [2022-11-26 00:43:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:43:12,925 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2022-11-26 00:43:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:12,929 INFO L225 Difference]: With dead ends: 722 [2022-11-26 00:43:12,929 INFO L226 Difference]: Without dead ends: 438 [2022-11-26 00:43:12,931 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 [2022-11-26 00:43:12,932 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 57 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:43:12,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 450 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:43:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-26 00:43:13,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 431. [2022-11-26 00:43:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 286 states have (on average 1.416083916083916) internal successors, (405), 289 states have internal predecessors, (405), 115 states have call successors, (115), 31 states have call predecessors, (115), 29 states have return successors, (115), 110 states have call predecessors, (115), 114 states have call successors, (115) [2022-11-26 00:43:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 635 transitions. [2022-11-26 00:43:13,159 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 635 transitions. Word has length 72 [2022-11-26 00:43:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:13,160 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 635 transitions. [2022-11-26 00:43:13,160 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-26 00:43:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 635 transitions. [2022-11-26 00:43:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-26 00:43:13,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:13,163 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:13,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:43:13,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:43:13,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash 914473862, now seen corresponding path program 1 times [2022-11-26 00:43:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:13,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465092895] [2022-11-26 00:43:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:43:13,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:13,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465092895] [2022-11-26 00:43:13,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465092895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:43:13,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993585001] [2022-11-26 00:43:13,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:13,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:13,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:13,307 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:43:13,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:43:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:13,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:43:13,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:43:13,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:43:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-26 00:43:13,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993585001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:43:13,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877625963] [2022-11-26 00:43:13,820 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-26 00:43:13,821 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:43:13,821 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:43:13,822 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:43:13,822 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:44:07,346 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-26 00:44:07,688 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-26 00:44:08,113 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:44:27,511 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:33,909 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 450 DAG size of output: 245 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:39,755 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:51,326 WARN L233 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 482 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:57,965 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 492 DAG size of output: 275 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:04,099 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 504 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:11,243 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 514 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:30,729 WARN L233 SmtUtils]: Spent 19.15s on a formula simplification. DAG size of input: 583 DAG size of output: 446 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:45:54,664 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification. DAG size of input: 581 DAG size of output: 435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:46:09,538 WARN L233 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 584 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:46:09,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1877625963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:46:09,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:46:09,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-26 00:46:09,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528092219] [2022-11-26 00:46:09,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:46:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-26 00:46:09,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:46:09,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-26 00:46:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-11-26 00:46:09,749 INFO L87 Difference]: Start difference. First operand 431 states and 635 transitions. Second operand has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-26 00:46:24,058 WARN L233 SmtUtils]: Spent 12.72s on a formula simplification. DAG size of input: 540 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:46:49,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:46:49,100 INFO L93 Difference]: Finished difference Result 836 states and 1271 transitions. [2022-11-26 00:46:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-26 00:46:49,101 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 73 [2022-11-26 00:46:49,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:46:49,105 INFO L225 Difference]: With dead ends: 836 [2022-11-26 00:46:49,105 INFO L226 Difference]: Without dead ends: 516 [2022-11-26 00:46:49,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 150.4s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-11-26 00:46:49,108 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 235 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:46:49,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 3022 Invalid, 1942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-26 00:46:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-26 00:46:49,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 461. [2022-11-26 00:46:49,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 314 states have (on average 1.4203821656050954) internal successors, (446), 317 states have internal predecessors, (446), 116 states have call successors, (116), 32 states have call predecessors, (116), 30 states have return successors, (116), 111 states have call predecessors, (116), 115 states have call successors, (116) [2022-11-26 00:46:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 678 transitions. [2022-11-26 00:46:49,385 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 678 transitions. Word has length 73 [2022-11-26 00:46:49,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:46:49,386 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 678 transitions. [2022-11-26 00:46:49,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-26 00:46:49,386 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 678 transitions. [2022-11-26 00:46:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-26 00:46:49,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:46:49,389 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:46:49,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:46:49,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:49,598 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:46:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:46:49,598 INFO L85 PathProgramCache]: Analyzing trace with hash -31197085, now seen corresponding path program 1 times [2022-11-26 00:46:49,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:46:49,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068947283] [2022-11-26 00:46:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:49,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:46:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:46:49,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:46:49,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068947283] [2022-11-26 00:46:49,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068947283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:46:49,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879370893] [2022-11-26 00:46:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:46:49,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:46:49,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:46:49,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:46:49,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:46:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:46:50,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:46:50,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:46:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:46:50,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:46:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:46:50,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879370893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:46:50,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630794675] [2022-11-26 00:46:50,362 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2022-11-26 00:46:50,362 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:46:50,363 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:46:50,364 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:46:50,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:49:14,088 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-26 00:49:14,419 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2022-11-26 00:49:14,767 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2022-11-26 00:49:15,141 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-26 00:49:15,220 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-26 00:49:15,556 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:49:29,160 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:49:34,852 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:49:54,080 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 482 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:50:06,010 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 504 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:50:12,677 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 514 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:50:36,649 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 569 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:50:43,045 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 565 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:50:58,746 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 545 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:51:16,684 WARN L233 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 526 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:51:16,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1630794675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:51:16,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:51:16,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-26 00:51:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933674417] [2022-11-26 00:51:16,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:51:16,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-26 00:51:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:51:16,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-26 00:51:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2022-11-26 00:51:16,693 INFO L87 Difference]: Start difference. First operand 461 states and 678 transitions. Second operand has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-26 00:51:41,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:51:41,420 INFO L93 Difference]: Finished difference Result 882 states and 1340 transitions. [2022-11-26 00:51:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-26 00:51:41,421 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 76 [2022-11-26 00:51:41,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:51:41,425 INFO L225 Difference]: With dead ends: 882 [2022-11-26 00:51:41,425 INFO L226 Difference]: Without dead ends: 562 [2022-11-26 00:51:41,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 131.5s TimeCoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2022-11-26 00:51:41,428 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 125 mSDsluCounter, 3227 mSDsCounter, 0 mSdLazyCounter, 3259 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 3269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:51:41,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 3448 Invalid, 3269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3259 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-11-26 00:51:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-26 00:51:41,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 499. [2022-11-26 00:51:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 346 states have (on average 1.4190751445086704) internal successors, (491), 349 states have internal predecessors, (491), 119 states have call successors, (119), 35 states have call predecessors, (119), 33 states have return successors, (119), 114 states have call predecessors, (119), 118 states have call successors, (119) [2022-11-26 00:51:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 729 transitions. [2022-11-26 00:51:41,781 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 729 transitions. Word has length 76 [2022-11-26 00:51:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:51:41,782 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 729 transitions. [2022-11-26 00:51:41,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-26 00:51:41,782 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 729 transitions. [2022-11-26 00:51:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-26 00:51:41,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:51:41,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:51:41,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:51:41,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-26 00:51:41,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:51:41,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:51:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1755576858, now seen corresponding path program 1 times [2022-11-26 00:51:41,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:51:41,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325274778] [2022-11-26 00:51:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:41,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:51:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:51:42,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:51:42,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325274778] [2022-11-26 00:51:42,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325274778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:51:42,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454917764] [2022-11-26 00:51:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:51:42,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:51:42,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:51:42,144 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:51:42,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0e40d7-862e-4489-a8f4-5a61e5274f1d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:51:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:51:42,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:51:42,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:51:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:51:42,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:51:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-26 00:51:42,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454917764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:51:42,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1107746419] [2022-11-26 00:51:42,601 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-26 00:51:42,601 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:51:42,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:51:42,602 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:51:42,602 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs