./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:40:51,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:40:51,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:40:51,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:40:51,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:40:51,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:40:51,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:40:51,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:40:51,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:40:51,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:40:51,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:40:51,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:40:51,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:40:51,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:40:51,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:40:51,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:40:51,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:40:51,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:40:51,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:40:51,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:40:51,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:40:51,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:40:51,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:40:51,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:40:51,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:40:51,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:40:51,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:40:51,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:40:51,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:40:51,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:40:51,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:40:51,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:40:51,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:40:51,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:40:51,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:40:51,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:40:51,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:40:51,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:40:51,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:40:51,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:40:51,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:40:51,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:40:51,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:40:51,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:40:51,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:40:51,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:40:51,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:40:51,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:40:51,475 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:40:51,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:40:51,475 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:40:51,475 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:40:51,476 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:40:51,476 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:40:51,476 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:40:51,476 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:40:51,476 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:40:51,477 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:40:51,477 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:40:51,477 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:40:51,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:40:51,478 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:40:51,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:40:51,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:40:51,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:40:51,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:40:51,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:40:51,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:40:51,479 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:40:51,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:40:51,479 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:40:51,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:40:51,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:40:51,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:40:51,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:40:51,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:40:51,481 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:40:51,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:40:51,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:40:51,481 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:40:51,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:40:51,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:40:51,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:40:51,482 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_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 [2022-12-14 13:40:51,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:40:51,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:40:51,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:40:51,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:40:51,685 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:40:51,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2022-12-14 13:40:54,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:40:54,478 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:40:54,479 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2022-12-14 13:40:54,491 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/data/77f3aa853/38bf002eeda54195af9d9a9bb2bb219a/FLAG6cc0c5dc7 [2022-12-14 13:40:54,501 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/data/77f3aa853/38bf002eeda54195af9d9a9bb2bb219a [2022-12-14 13:40:54,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:40:54,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:40:54,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:40:54,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:40:54,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:40:54,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:40:54" (1/1) ... [2022-12-14 13:40:54,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f29c626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:54, skipping insertion in model container [2022-12-14 13:40:54,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:40:54" (1/1) ... [2022-12-14 13:40:54,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:40:54,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:40:54,705 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_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2022-12-14 13:40:54,802 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,841 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,848 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,848 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,852 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,865 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,867 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,880 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,881 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,882 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:40:54,908 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:40:54,929 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_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2022-12-14 13:40:54,953 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,960 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,962 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,962 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,964 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,968 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,968 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,971 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,972 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,973 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:40:54,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:40:55,025 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:40:55,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55 WrapperNode [2022-12-14 13:40:55,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:40:55,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:40:55,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:40:55,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:40:55,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,119 INFO L138 Inliner]: procedures = 151, calls = 284, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1304 [2022-12-14 13:40:55,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:40:55,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:40:55,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:40:55,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:40:55,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,189 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:40:55,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:40:55,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:40:55,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:40:55,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (1/1) ... [2022-12-14 13:40:55,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:40:55,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:40:55,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:40:55,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:40:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 13:40:55,271 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 13:40:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-12-14 13:40:55,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-12-14 13:40:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-12-14 13:40:55,272 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-12-14 13:40:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 13:40:55,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 13:40:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 13:40:55,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 13:40:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 13:40:55,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 13:40:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 13:40:55,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 13:40:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-12-14 13:40:55,272 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-12-14 13:40:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 13:40:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 13:40:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-12-14 13:40:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-12-14 13:40:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 13:40:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 13:40:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 13:40:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 13:40:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 13:40:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 13:40:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-12-14 13:40:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-12-14 13:40:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-12-14 13:40:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-12-14 13:40:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 13:40:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 13:40:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 13:40:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 13:40:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 13:40:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 13:40:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 13:40:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-12-14 13:40:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-12-14 13:40:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 13:40:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 13:40:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 13:40:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 13:40:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 13:40:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 13:40:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-12-14 13:40:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-12-14 13:40:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:40:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 13:40:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 13:40:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 13:40:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 13:40:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-12-14 13:40:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-12-14 13:40:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-12-14 13:40:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-12-14 13:40:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-12-14 13:40:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-12-14 13:40:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 13:40:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 13:40:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 13:40:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 13:40:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 13:40:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 13:40:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 13:40:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 13:40:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-14 13:40:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-14 13:40:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 13:40:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 13:40:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 13:40:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 13:40:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 13:40:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 13:40:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-12-14 13:40:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-12-14 13:40:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-12-14 13:40:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-12-14 13:40:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 13:40:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 13:40:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 13:40:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 13:40:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:40:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 13:40:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 13:40:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-12-14 13:40:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-12-14 13:40:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-12-14 13:40:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-12-14 13:40:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 13:40:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 13:40:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:40:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:40:55,466 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:40:55,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:40:56,237 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:40:56,615 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:40:56,615 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:40:56,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:40:56 BoogieIcfgContainer [2022-12-14 13:40:56,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:40:56,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:40:56,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:40:56,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:40:56,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:40:54" (1/3) ... [2022-12-14 13:40:56,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6986c4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:40:56, skipping insertion in model container [2022-12-14 13:40:56,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:40:55" (2/3) ... [2022-12-14 13:40:56,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6986c4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:40:56, skipping insertion in model container [2022-12-14 13:40:56,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:40:56" (3/3) ... [2022-12-14 13:40:56,624 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_productSimulator.cil.c [2022-12-14 13:40:56,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:40:56,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:40:56,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:40:56,683 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;@150e0cd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:40:56,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:40:56,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 385 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2022-12-14 13:40:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-14 13:40:56,700 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:56,701 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:56,701 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:56,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:56,705 INFO L85 PathProgramCache]: Analyzing trace with hash 299406750, now seen corresponding path program 1 times [2022-12-14 13:40:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:56,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281068669] [2022-12-14 13:40:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:56,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 13:40:57,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:57,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281068669] [2022-12-14 13:40:57,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281068669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:40:57,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:40:57,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:40:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725796301] [2022-12-14 13:40:57,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:40:57,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:40:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:57,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:40:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:40:57,220 INFO L87 Difference]: Start difference. First operand has 385 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 13:40:57,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:57,459 INFO L93 Difference]: Finished difference Result 742 states and 1022 transitions. [2022-12-14 13:40:57,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:40:57,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2022-12-14 13:40:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:57,470 INFO L225 Difference]: With dead ends: 742 [2022-12-14 13:40:57,471 INFO L226 Difference]: Without dead ends: 382 [2022-12-14 13:40:57,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:40:57,476 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 6 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:57,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1401 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:40:57,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-12-14 13:40:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-12-14 13:40:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 225 states have (on average 1.288888888888889) internal successors, (290), 244 states have internal predecessors, (290), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-12-14 13:40:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 513 transitions. [2022-12-14 13:40:57,541 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 513 transitions. Word has length 121 [2022-12-14 13:40:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:57,542 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 513 transitions. [2022-12-14 13:40:57,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-14 13:40:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 513 transitions. [2022-12-14 13:40:57,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 13:40:57,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:57,549 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:57,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:40:57,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:57,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:57,550 INFO L85 PathProgramCache]: Analyzing trace with hash -291977356, now seen corresponding path program 1 times [2022-12-14 13:40:57,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:57,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115220888] [2022-12-14 13:40:57,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:57,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 13:40:57,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:57,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115220888] [2022-12-14 13:40:57,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115220888] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:40:57,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:40:57,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:40:57,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567164052] [2022-12-14 13:40:57,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:40:57,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:40:57,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:57,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:40:57,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:57,700 INFO L87 Difference]: Start difference. First operand 382 states and 513 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 13:40:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:57,833 INFO L93 Difference]: Finished difference Result 735 states and 995 transitions. [2022-12-14 13:40:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:40:57,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 127 [2022-12-14 13:40:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:57,839 INFO L225 Difference]: With dead ends: 735 [2022-12-14 13:40:57,839 INFO L226 Difference]: Without dead ends: 382 [2022-12-14 13:40:57,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:57,841 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 478 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:57,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 470 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:40:57,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-12-14 13:40:57,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-12-14 13:40:57,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 226 states have (on average 1.2743362831858407) internal successors, (288), 243 states have internal predecessors, (288), 110 states have call successors, (110), 45 states have call predecessors, (110), 45 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-12-14 13:40:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 507 transitions. [2022-12-14 13:40:57,869 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 507 transitions. Word has length 127 [2022-12-14 13:40:57,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:57,869 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 507 transitions. [2022-12-14 13:40:57,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 13:40:57,869 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 507 transitions. [2022-12-14 13:40:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 13:40:57,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:57,872 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:57,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:40:57,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:57,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1858910904, now seen corresponding path program 1 times [2022-12-14 13:40:57,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:57,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220871607] [2022-12-14 13:40:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:57,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 13:40:57,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:57,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220871607] [2022-12-14 13:40:57,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220871607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:40:57,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:40:57,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:40:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397164544] [2022-12-14 13:40:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:40:57,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:40:57,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:40:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:57,968 INFO L87 Difference]: Start difference. First operand 382 states and 507 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 13:40:58,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:58,179 INFO L93 Difference]: Finished difference Result 1076 states and 1451 transitions. [2022-12-14 13:40:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:40:58,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 140 [2022-12-14 13:40:58,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:58,183 INFO L225 Difference]: With dead ends: 1076 [2022-12-14 13:40:58,183 INFO L226 Difference]: Without dead ends: 723 [2022-12-14 13:40:58,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:58,185 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 479 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:58,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 986 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:40:58,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-12-14 13:40:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 721. [2022-12-14 13:40:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 426 states have (on average 1.272300469483568) internal successors, (542), 456 states have internal predecessors, (542), 205 states have call successors, (205), 89 states have call predecessors, (205), 89 states have return successors, (216), 202 states have call predecessors, (216), 203 states have call successors, (216) [2022-12-14 13:40:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 963 transitions. [2022-12-14 13:40:58,234 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 963 transitions. Word has length 140 [2022-12-14 13:40:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:58,235 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 963 transitions. [2022-12-14 13:40:58,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 13:40:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 963 transitions. [2022-12-14 13:40:58,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 13:40:58,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:58,239 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:58,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:40:58,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:58,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:58,240 INFO L85 PathProgramCache]: Analyzing trace with hash 71912619, now seen corresponding path program 1 times [2022-12-14 13:40:58,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:58,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131523431] [2022-12-14 13:40:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:58,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 13:40:58,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:58,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131523431] [2022-12-14 13:40:58,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131523431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:40:58,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:40:58,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:40:58,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782159631] [2022-12-14 13:40:58,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:40:58,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:40:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:58,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:40:58,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:58,344 INFO L87 Difference]: Start difference. First operand 721 states and 963 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 13:40:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:58,450 INFO L93 Difference]: Finished difference Result 723 states and 964 transitions. [2022-12-14 13:40:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:40:58,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2022-12-14 13:40:58,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:58,453 INFO L225 Difference]: With dead ends: 723 [2022-12-14 13:40:58,453 INFO L226 Difference]: Without dead ends: 382 [2022-12-14 13:40:58,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:58,455 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 459 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:58,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 473 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:40:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-12-14 13:40:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-12-14 13:40:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 227 states have (on average 1.2555066079295154) internal successors, (285), 242 states have internal predecessors, (285), 108 states have call successors, (108), 46 states have call predecessors, (108), 46 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2022-12-14 13:40:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 500 transitions. [2022-12-14 13:40:58,479 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 500 transitions. Word has length 146 [2022-12-14 13:40:58,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:58,479 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 500 transitions. [2022-12-14 13:40:58,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 13:40:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 500 transitions. [2022-12-14 13:40:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 13:40:58,481 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:58,481 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:58,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 13:40:58,481 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:58,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1448546689, now seen corresponding path program 1 times [2022-12-14 13:40:58,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:58,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904826830] [2022-12-14 13:40:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:58,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 13:40:58,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:58,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904826830] [2022-12-14 13:40:58,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904826830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:40:58,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:40:58,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:40:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725195779] [2022-12-14 13:40:58,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:40:58,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:40:58,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:58,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:40:58,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:58,551 INFO L87 Difference]: Start difference. First operand 382 states and 500 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 13:40:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:58,677 INFO L93 Difference]: Finished difference Result 725 states and 947 transitions. [2022-12-14 13:40:58,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:40:58,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2022-12-14 13:40:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:58,681 INFO L225 Difference]: With dead ends: 725 [2022-12-14 13:40:58,681 INFO L226 Difference]: Without dead ends: 385 [2022-12-14 13:40:58,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:58,684 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 442 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:58,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 458 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:40:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-12-14 13:40:58,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 379. [2022-12-14 13:40:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 227 states have (on average 1.2070484581497798) internal successors, (274), 237 states have internal predecessors, (274), 105 states have call successors, (105), 46 states have call predecessors, (105), 46 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2022-12-14 13:40:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 483 transitions. [2022-12-14 13:40:58,700 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 483 transitions. Word has length 146 [2022-12-14 13:40:58,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:58,700 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 483 transitions. [2022-12-14 13:40:58,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 13:40:58,701 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 483 transitions. [2022-12-14 13:40:58,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-14 13:40:58,702 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:58,702 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:58,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 13:40:58,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:58,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 184900128, now seen corresponding path program 1 times [2022-12-14 13:40:58,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:58,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096024501] [2022-12-14 13:40:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:58,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 13:40:58,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:58,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096024501] [2022-12-14 13:40:58,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096024501] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:40:58,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:40:58,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:40:58,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524442200] [2022-12-14 13:40:58,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:40:58,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:40:58,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:40:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:58,817 INFO L87 Difference]: Start difference. First operand 379 states and 483 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 13:40:58,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:58,939 INFO L93 Difference]: Finished difference Result 601 states and 760 transitions. [2022-12-14 13:40:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:40:58,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 163 [2022-12-14 13:40:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:58,941 INFO L225 Difference]: With dead ends: 601 [2022-12-14 13:40:58,941 INFO L226 Difference]: Without dead ends: 381 [2022-12-14 13:40:58,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:58,942 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 0 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:58,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 857 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:40:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-12-14 13:40:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-12-14 13:40:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 229 states have (on average 1.205240174672489) internal successors, (276), 239 states have internal predecessors, (276), 105 states have call successors, (105), 46 states have call predecessors, (105), 46 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2022-12-14 13:40:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 485 transitions. [2022-12-14 13:40:58,958 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 485 transitions. Word has length 163 [2022-12-14 13:40:58,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:58,958 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 485 transitions. [2022-12-14 13:40:58,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 13:40:58,958 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 485 transitions. [2022-12-14 13:40:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-12-14 13:40:58,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:58,960 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:58,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 13:40:58,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:58,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash -755738254, now seen corresponding path program 1 times [2022-12-14 13:40:58,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:58,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998792137] [2022-12-14 13:40:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:58,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 13:40:59,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:59,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998792137] [2022-12-14 13:40:59,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998792137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:40:59,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:40:59,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:40:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367169192] [2022-12-14 13:40:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:40:59,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:40:59,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:40:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:40:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:59,087 INFO L87 Difference]: Start difference. First operand 381 states and 485 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 13:40:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:40:59,220 INFO L93 Difference]: Finished difference Result 760 states and 993 transitions. [2022-12-14 13:40:59,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:40:59,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 168 [2022-12-14 13:40:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:40:59,224 INFO L225 Difference]: With dead ends: 760 [2022-12-14 13:40:59,224 INFO L226 Difference]: Without dead ends: 448 [2022-12-14 13:40:59,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:40:59,225 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 76 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:40:59,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 873 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:40:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-12-14 13:40:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2022-12-14 13:40:59,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 277 states have (on average 1.2490974729241877) internal successors, (346), 287 states have internal predecessors, (346), 119 states have call successors, (119), 46 states have call predecessors, (119), 46 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2022-12-14 13:40:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 583 transitions. [2022-12-14 13:40:59,250 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 583 transitions. Word has length 168 [2022-12-14 13:40:59,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:40:59,250 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 583 transitions. [2022-12-14 13:40:59,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 13:40:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 583 transitions. [2022-12-14 13:40:59,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-14 13:40:59,254 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:40:59,254 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:40:59,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 13:40:59,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:40:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:40:59,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1625269859, now seen corresponding path program 1 times [2022-12-14 13:40:59,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:40:59,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253099760] [2022-12-14 13:40:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:59,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:40:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 13:40:59,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:40:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253099760] [2022-12-14 13:40:59,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253099760] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:40:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405071472] [2022-12-14 13:40:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:40:59,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:40:59,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:40:59,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:40:59,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:40:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:40:59,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:40:59,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:40:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 13:40:59,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:40:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 13:40:59,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405071472] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:40:59,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [414840746] [2022-12-14 13:40:59,909 INFO L159 IcfgInterpreter]: Started Sifa with 139 locations of interest [2022-12-14 13:40:59,909 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:40:59,913 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:40:59,918 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:40:59,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:42:31,565 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2022-12-14 13:42:32,649 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-12-14 13:42:32,927 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 439 for LOIs [2022-12-14 13:42:33,192 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2022-12-14 13:42:34,481 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 275 for LOIs [2022-12-14 13:42:36,176 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 245 for LOIs [2022-12-14 13:42:36,217 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-12-14 13:42:36,904 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2022-12-14 13:42:37,168 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 277 for LOIs [2022-12-14 13:42:38,446 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 239 for LOIs [2022-12-14 13:42:38,484 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2022-12-14 13:42:38,647 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 289 for LOIs [2022-12-14 13:42:38,808 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 289 for LOIs [2022-12-14 13:42:41,009 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 273 for LOIs [2022-12-14 13:42:41,686 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 255 for LOIs [2022-12-14 13:42:42,203 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 255 for LOIs [2022-12-14 13:42:42,238 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 255 for LOIs [2022-12-14 13:42:42,279 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 421 for LOIs [2022-12-14 13:42:42,801 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:43:42,726 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 721 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:44:10,931 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 556 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:45:25,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [414840746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:45:25,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:45:25,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [4, 4, 4] total 101 [2022-12-14 13:45:25,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917173255] [2022-12-14 13:45:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:45:25,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 13:45:25,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:45:25,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 13:45:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=9738, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 13:45:25,026 INFO L87 Difference]: Start difference. First operand 443 states and 583 transitions. Second operand has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-12-14 13:47:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:29,332 INFO L93 Difference]: Finished difference Result 1210 states and 1677 transitions. [2022-12-14 13:47:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-12-14 13:47:29,333 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) Word has length 164 [2022-12-14 13:47:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:29,340 INFO L225 Difference]: With dead ends: 1210 [2022-12-14 13:47:29,340 INFO L226 Difference]: Without dead ends: 793 [2022-12-14 13:47:29,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 391 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5026 ImplicationChecksByTransitivity, 212.6s TimeCoverageRelationStatistics Valid=513, Invalid=13059, Unknown=0, NotChecked=0, Total=13572 [2022-12-14 13:47:29,349 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 528 mSDsluCounter, 13901 mSDsCounter, 0 mSdLazyCounter, 23500 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 14365 SdHoareTripleChecker+Invalid, 23553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 23500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.8s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:29,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 14365 Invalid, 23553 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [53 Valid, 23500 Invalid, 0 Unknown, 0 Unchecked, 72.8s Time] [2022-12-14 13:47:29,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-12-14 13:47:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 609. [2022-12-14 13:47:29,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 405 states have (on average 1.2839506172839505) internal successors, (520), 415 states have internal predecessors, (520), 141 states have call successors, (141), 68 states have call predecessors, (141), 62 states have return successors, (140), 133 states have call predecessors, (140), 140 states have call successors, (140) [2022-12-14 13:47:29,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 801 transitions. [2022-12-14 13:47:29,634 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 801 transitions. Word has length 164 [2022-12-14 13:47:29,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:29,634 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 801 transitions. [2022-12-14 13:47:29,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-12-14 13:47:29,635 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 801 transitions. [2022-12-14 13:47:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-14 13:47:29,637 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:29,637 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:29,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:47:29,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:47:29,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:47:29,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:29,840 INFO L85 PathProgramCache]: Analyzing trace with hash -919494177, now seen corresponding path program 1 times [2022-12-14 13:47:29,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:29,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812579281] [2022-12-14 13:47:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:29,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-14 13:47:29,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:29,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812579281] [2022-12-14 13:47:29,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812579281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:47:29,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:47:29,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:47:29,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439683480] [2022-12-14 13:47:29,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:47:29,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:47:29,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:29,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:47:29,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:29,942 INFO L87 Difference]: Start difference. First operand 609 states and 801 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 13:47:30,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:30,585 INFO L93 Difference]: Finished difference Result 1535 states and 2058 transitions. [2022-12-14 13:47:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:47:30,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 171 [2022-12-14 13:47:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:30,588 INFO L225 Difference]: With dead ends: 1535 [2022-12-14 13:47:30,588 INFO L226 Difference]: Without dead ends: 966 [2022-12-14 13:47:30,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:30,590 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 456 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:30,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1186 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:47:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-12-14 13:47:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2022-12-14 13:47:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 627 states have (on average 1.2791068580542264) internal successors, (802), 644 states have internal predecessors, (802), 235 states have call successors, (235), 107 states have call predecessors, (235), 101 states have return successors, (245), 225 states have call predecessors, (245), 233 states have call successors, (245) [2022-12-14 13:47:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1282 transitions. [2022-12-14 13:47:30,900 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1282 transitions. Word has length 171 [2022-12-14 13:47:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:30,900 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1282 transitions. [2022-12-14 13:47:30,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-12-14 13:47:30,900 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1282 transitions. [2022-12-14 13:47:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-14 13:47:30,902 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:30,902 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:30,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 13:47:30,902 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:47:30,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:30,903 INFO L85 PathProgramCache]: Analyzing trace with hash -143346402, now seen corresponding path program 1 times [2022-12-14 13:47:30,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:30,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589270961] [2022-12-14 13:47:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:30,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 13:47:31,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:31,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589270961] [2022-12-14 13:47:31,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589270961] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:47:31,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869916308] [2022-12-14 13:47:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:31,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:47:31,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:47:31,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:47:31,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:47:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:31,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:47:31,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:47:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 13:47:31,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:47:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 13:47:31,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869916308] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:47:31,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [455190193] [2022-12-14 13:47:31,355 INFO L159 IcfgInterpreter]: Started Sifa with 144 locations of interest [2022-12-14 13:47:31,355 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:47:31,355 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:47:31,356 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:47:31,356 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:49:09,019 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2022-12-14 13:49:10,075 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-12-14 13:49:10,355 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 439 for LOIs [2022-12-14 13:49:10,623 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2022-12-14 13:49:11,900 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 275 for LOIs [2022-12-14 13:49:13,533 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 245 for LOIs [2022-12-14 13:49:13,570 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-12-14 13:49:14,244 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 438 for LOIs [2022-12-14 13:49:14,504 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 275 for LOIs [2022-12-14 13:49:15,710 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 239 for LOIs [2022-12-14 13:49:15,750 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2022-12-14 13:49:16,628 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 283 for LOIs [2022-12-14 13:49:16,780 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 283 for LOIs [2022-12-14 13:49:18,873 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 275 for LOIs [2022-12-14 13:49:19,548 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 257 for LOIs [2022-12-14 13:49:20,051 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 257 for LOIs [2022-12-14 13:49:20,086 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 257 for LOIs [2022-12-14 13:49:20,128 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 465 for LOIs [2022-12-14 13:49:24,782 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 262 for LOIs [2022-12-14 13:49:24,831 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:50:30,563 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 721 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:51:27,041 WARN L233 SmtUtils]: Spent 7.23s on a formula simplification. DAG size of input: 465 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:52:23,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [455190193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:52:23,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:52:23,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [4, 4, 4] total 105 [2022-12-14 13:52:23,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81327071] [2022-12-14 13:52:23,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:52:23,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-12-14 13:52:23,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:52:23,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-12-14 13:52:23,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=10549, Unknown=0, NotChecked=0, Total=10920 [2022-12-14 13:52:23,261 INFO L87 Difference]: Start difference. First operand 964 states and 1282 transitions. Second operand has 100 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 63 states have internal predecessors, (91), 30 states have call successors, (37), 20 states have call predecessors, (37), 14 states have return successors, (28), 26 states have call predecessors, (28), 24 states have call successors, (28) [2022-12-14 13:54:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:54:29,903 INFO L93 Difference]: Finished difference Result 1570 states and 2093 transitions. [2022-12-14 13:54:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-12-14 13:54:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 63 states have internal predecessors, (91), 30 states have call successors, (37), 20 states have call predecessors, (37), 14 states have return successors, (28), 26 states have call predecessors, (28), 24 states have call successors, (28) Word has length 169 [2022-12-14 13:54:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:54:29,907 INFO L225 Difference]: With dead ends: 1570 [2022-12-14 13:54:29,907 INFO L226 Difference]: Without dead ends: 1162 [2022-12-14 13:54:29,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 401 SyntacticMatches, 5 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5501 ImplicationChecksByTransitivity, 229.8s TimeCoverageRelationStatistics Valid=534, Invalid=14472, Unknown=0, NotChecked=0, Total=15006 [2022-12-14 13:54:29,911 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 576 mSDsluCounter, 14106 mSDsCounter, 0 mSdLazyCounter, 24422 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 14564 SdHoareTripleChecker+Invalid, 24455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 24422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.9s IncrementalHoareTripleChecker+Time [2022-12-14 13:54:29,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 14564 Invalid, 24455 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [33 Valid, 24422 Invalid, 0 Unknown, 0 Unchecked, 73.9s Time] [2022-12-14 13:54:29,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-12-14 13:54:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 977. [2022-12-14 13:54:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 634 states have (on average 1.27602523659306) internal successors, (809), 652 states have internal predecessors, (809), 239 states have call successors, (239), 111 states have call predecessors, (239), 103 states have return successors, (246), 226 states have call predecessors, (246), 237 states have call successors, (246) [2022-12-14 13:54:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1294 transitions. [2022-12-14 13:54:30,271 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1294 transitions. Word has length 169 [2022-12-14 13:54:30,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:54:30,271 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1294 transitions. [2022-12-14 13:54:30,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 63 states have internal predecessors, (91), 30 states have call successors, (37), 20 states have call predecessors, (37), 14 states have return successors, (28), 26 states have call predecessors, (28), 24 states have call successors, (28) [2022-12-14 13:54:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1294 transitions. [2022-12-14 13:54:30,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-14 13:54:30,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:54:30,274 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:54:30,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:54:30,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 13:54:30,476 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:54:30,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:54:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1813227052, now seen corresponding path program 1 times [2022-12-14 13:54:30,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:54:30,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348354138] [2022-12-14 13:54:30,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:30,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:54:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 13:54:30,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:54:30,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348354138] [2022-12-14 13:54:30,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348354138] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:54:30,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44401829] [2022-12-14 13:54:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:30,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:54:30,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:54:30,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:54:30,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd5983e-7a5d-4cb6-9999-085bb3ab3150/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:54:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:30,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:54:30,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:54:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 13:54:30,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:54:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 13:54:30,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44401829] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:54:30,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1218441501] [2022-12-14 13:54:30,904 INFO L159 IcfgInterpreter]: Started Sifa with 144 locations of interest [2022-12-14 13:54:30,904 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:54:30,905 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:54:30,905 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:54:30,905 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs