./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/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_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/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_1fb566f4-ad24-4919-8548-45e65d0277fa/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 e1a1a15d818854b6fd39e860ed8f86805463715275e4ae9feedab248e5877daf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:54:35,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:54:35,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:54:35,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:54:35,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:54:35,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:54:35,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:54:35,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:54:35,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:54:35,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:54:35,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:54:35,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:54:35,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:54:35,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:54:35,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:54:35,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:54:35,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:54:35,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:54:35,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:54:35,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:54:35,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:54:35,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:54:35,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:54:35,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:54:35,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:54:35,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:54:35,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:54:35,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:54:35,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:54:35,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:54:35,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:54:35,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:54:35,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:54:35,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:54:35,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:54:35,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:54:35,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:54:35,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:54:35,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:54:35,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:54:35,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:54:35,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:54:35,486 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:54:35,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:54:35,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:54:35,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:54:35,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:54:35,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:54:35,488 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:54:35,488 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:54:35,488 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:54:35,488 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:54:35,489 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:54:35,489 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:54:35,489 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:54:35,489 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:54:35,489 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:54:35,490 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:54:35,490 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:54:35,490 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:54:35,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:54:35,491 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:54:35,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:54:35,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:54:35,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:54:35,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:54:35,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:54:35,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:54:35,492 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:54:35,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:54:35,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:54:35,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:54:35,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:54:35,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:54:35,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:54:35,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:54:35,494 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:54:35,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:54:35,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:54:35,494 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:54:35,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:54:35,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:54:35,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:54:35,495 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_1fb566f4-ad24-4919-8548-45e65d0277fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1a1a15d818854b6fd39e860ed8f86805463715275e4ae9feedab248e5877daf [2022-12-14 09:54:35,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:54:35,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:54:35,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:54:35,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:54:35,709 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:54:35,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c [2022-12-14 09:54:38,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:54:38,463 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:54:38,463 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c [2022-12-14 09:54:38,474 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/data/8fa49695d/4e5580fe798e4f5fa9ec9052f30e9f53/FLAG6c3752f80 [2022-12-14 09:54:38,777 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/data/8fa49695d/4e5580fe798e4f5fa9ec9052f30e9f53 [2022-12-14 09:54:38,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:54:38,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:54:38,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:54:38,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:54:38,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:54:38,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:54:38" (1/1) ... [2022-12-14 09:54:38,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628d7203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:38, skipping insertion in model container [2022-12-14 09:54:38,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:54:38" (1/1) ... [2022-12-14 09:54:38,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:54:38,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:54:38,982 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:38,986 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:38,990 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,141 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,145 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,150 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,154 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,156 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_1fb566f4-ad24-4919-8548-45e65d0277fa/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-12-14 09:54:39,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:54:39,169 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:54:39,180 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,181 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,183 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,227 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,228 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,231 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,233 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 09:54:39,234 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_1fb566f4-ad24-4919-8548-45e65d0277fa/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-12-14 09:54:39,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:54:39,253 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:54:39,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39 WrapperNode [2022-12-14 09:54:39,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:54:39,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:54:39,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:54:39,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:54:39,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,304 INFO L138 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 57, calls inlined = 49, statements flattened = 874 [2022-12-14 09:54:39,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:54:39,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:54:39,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:54:39,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:54:39,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:54:39,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:54:39,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:54:39,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:54:39,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (1/1) ... [2022-12-14 09:54:39,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:54:39,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:54:39,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:54:39,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:54:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 09:54:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 09:54:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 09:54:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 09:54:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 09:54:39,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 09:54:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 09:54:39,391 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 09:54:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 09:54:39,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 09:54:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 09:54:39,391 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 09:54:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 09:54:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 09:54:39,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 09:54:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 09:54:39,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 09:54:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:54:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 09:54:39,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 09:54:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 09:54:39,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 09:54:39,400 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 09:54:39,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 09:54:39,401 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 09:54:39,401 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 09:54:39,401 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-14 09:54:39,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-14 09:54:39,401 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 09:54:39,401 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 09:54:39,401 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 09:54:39,401 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 09:54:39,402 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 09:54:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 09:54:39,402 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 09:54:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 09:54:39,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:54:39,402 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 09:54:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 09:54:39,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:54:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:54:39,554 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:54:39,556 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:54:40,041 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:54:40,340 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:54:40,340 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 09:54:40,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:54:40 BoogieIcfgContainer [2022-12-14 09:54:40,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:54:40,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:54:40,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:54:40,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:54:40,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:54:38" (1/3) ... [2022-12-14 09:54:40,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b591b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:54:40, skipping insertion in model container [2022-12-14 09:54:40,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:54:39" (2/3) ... [2022-12-14 09:54:40,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b591b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:54:40, skipping insertion in model container [2022-12-14 09:54:40,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:54:40" (3/3) ... [2022-12-14 09:54:40,351 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.c [2022-12-14 09:54:40,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:54:40,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:54:40,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:54:40,420 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;@2f41622e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:54:40,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:54:40,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 92 states have (on average 1.358695652173913) internal successors, (125), 94 states have internal predecessors, (125), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-12-14 09:54:40,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 09:54:40,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:54:40,440 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:54:40,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:54:40,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:54:40,445 INFO L85 PathProgramCache]: Analyzing trace with hash 957440911, now seen corresponding path program 1 times [2022-12-14 09:54:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:54:40,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025985850] [2022-12-14 09:54:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:54:40,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:54:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:54:40,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:54:40,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:54:40,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025985850] [2022-12-14 09:54:40,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025985850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:54:40,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:54:40,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:54:40,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571786628] [2022-12-14 09:54:40,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:54:40,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 09:54:40,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:54:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 09:54:40,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:54:40,710 INFO L87 Difference]: Start difference. First operand has 153 states, 92 states have (on average 1.358695652173913) internal successors, (125), 94 states have internal predecessors, (125), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:54:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:54:40,802 INFO L93 Difference]: Finished difference Result 223 states and 292 transitions. [2022-12-14 09:54:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 09:54:40,804 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 68 [2022-12-14 09:54:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:54:40,813 INFO L225 Difference]: With dead ends: 223 [2022-12-14 09:54:40,814 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 09:54:40,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:54:40,820 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:54:40,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:54:40,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 09:54:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-12-14 09:54:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 91 states have internal predecessors, (119), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-12-14 09:54:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 200 transitions. [2022-12-14 09:54:40,868 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 200 transitions. Word has length 68 [2022-12-14 09:54:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:54:40,869 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 200 transitions. [2022-12-14 09:54:40,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:54:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 200 transitions. [2022-12-14 09:54:40,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 09:54:40,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:54:40,872 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:54:40,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:54:40,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:54:40,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:54:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1523855416, now seen corresponding path program 1 times [2022-12-14 09:54:40,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:54:40,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527966836] [2022-12-14 09:54:40,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:54:40,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:54:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:54:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:54:41,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:54:41,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527966836] [2022-12-14 09:54:41,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527966836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:54:41,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:54:41,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:54:41,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851218639] [2022-12-14 09:54:41,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:54:41,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:54:41,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:54:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:54:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:54:41,060 INFO L87 Difference]: Start difference. First operand 150 states and 200 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:54:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:54:41,156 INFO L93 Difference]: Finished difference Result 219 states and 280 transitions. [2022-12-14 09:54:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:54:41,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 69 [2022-12-14 09:54:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:54:41,159 INFO L225 Difference]: With dead ends: 219 [2022-12-14 09:54:41,159 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 09:54:41,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:54:41,161 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:54:41,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:54:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 09:54:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-12-14 09:54:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-12-14 09:54:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 202 transitions. [2022-12-14 09:54:41,177 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 202 transitions. Word has length 69 [2022-12-14 09:54:41,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:54:41,177 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 202 transitions. [2022-12-14 09:54:41,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:54:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 202 transitions. [2022-12-14 09:54:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 09:54:41,180 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:54:41,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:54:41,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:54:41,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:54:41,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:54:41,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1558482792, now seen corresponding path program 1 times [2022-12-14 09:54:41,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:54:41,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363618802] [2022-12-14 09:54:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:54:41,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:54:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:54:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:54:41,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:54:41,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363618802] [2022-12-14 09:54:41,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363618802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:54:41,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:54:41,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:54:41,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693086058] [2022-12-14 09:54:41,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:54:41,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:54:41,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:54:41,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:54:41,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:54:41,284 INFO L87 Difference]: Start difference. First operand 152 states and 202 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:54:41,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:54:41,365 INFO L93 Difference]: Finished difference Result 334 states and 463 transitions. [2022-12-14 09:54:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:54:41,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-12-14 09:54:41,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:54:41,367 INFO L225 Difference]: With dead ends: 334 [2022-12-14 09:54:41,368 INFO L226 Difference]: Without dead ends: 200 [2022-12-14 09:54:41,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:54:41,370 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 57 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:54:41,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 353 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:54:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-12-14 09:54:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2022-12-14 09:54:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.403225806451613) internal successors, (174), 125 states have internal predecessors, (174), 52 states have call successors, (52), 18 states have call predecessors, (52), 18 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 09:54:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 277 transitions. [2022-12-14 09:54:41,388 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 277 transitions. Word has length 74 [2022-12-14 09:54:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:54:41,389 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 277 transitions. [2022-12-14 09:54:41,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 09:54:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 277 transitions. [2022-12-14 09:54:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 09:54:41,392 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:54:41,392 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:54:41,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:54:41,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:54:41,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:54:41,393 INFO L85 PathProgramCache]: Analyzing trace with hash 218741330, now seen corresponding path program 1 times [2022-12-14 09:54:41,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:54:41,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155469489] [2022-12-14 09:54:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:54:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:54:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:54:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:54:41,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:54:41,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155469489] [2022-12-14 09:54:41,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155469489] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:54:41,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571958463] [2022-12-14 09:54:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:54:41,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:54:41,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:54:41,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:54:41,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:54:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:54:41,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 09:54:41,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:54:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:54:41,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:54:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:54:41,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571958463] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:54:41,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2126969084] [2022-12-14 09:54:41,901 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-12-14 09:54:41,901 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:54:41,905 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:54:41,910 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:54:41,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:55:13,035 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 09:55:13,306 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 09:55:13,582 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-12-14 09:55:15,086 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 09:55:15,120 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-12-14 09:55:24,383 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-12-14 09:55:24,415 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-12-14 09:55:24,454 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-12-14 09:55:25,043 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:56:03,944 WARN L233 SmtUtils]: Spent 11.01s on a formula simplification. DAG size of input: 587 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:56:15,183 WARN L233 SmtUtils]: Spent 10.96s on a formula simplification. DAG size of input: 589 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:56:55,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2126969084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:56:55,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:56:55,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-12-14 09:56:55,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019037438] [2022-12-14 09:56:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:56:55,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 09:56:55,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:56:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 09:56:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2130, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 09:56:55,066 INFO L87 Difference]: Start difference. First operand 195 states and 277 transitions. Second operand has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 09:57:02,424 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 543 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:57:07,995 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 545 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:57:15,024 WARN L233 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 560 DAG size of output: 439 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:57:22,272 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 558 DAG size of output: 435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:57:28,281 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 588 DAG size of output: 440 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:57:35,869 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 555 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:57:45,297 WARN L233 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 562 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:57:52,709 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 592 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:58:06,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:58:06,947 INFO L93 Difference]: Finished difference Result 552 states and 850 transitions. [2022-12-14 09:58:06,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 09:58:06,948 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 75 [2022-12-14 09:58:06,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:58:06,950 INFO L225 Difference]: With dead ends: 552 [2022-12-14 09:58:06,951 INFO L226 Difference]: Without dead ends: 375 [2022-12-14 09:58:06,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 144.5s TimeCoverageRelationStatistics Valid=194, Invalid=2886, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 09:58:06,953 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 271 mSDsluCounter, 3980 mSDsCounter, 0 mSdLazyCounter, 5340 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-12-14 09:58:06,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 4185 Invalid, 5364 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [24 Valid, 5340 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2022-12-14 09:58:06,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-12-14 09:58:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 308. [2022-12-14 09:58:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 218 states have (on average 1.4495412844036697) internal successors, (316), 220 states have internal predecessors, (316), 65 states have call successors, (65), 25 states have call predecessors, (65), 24 states have return successors, (65), 62 states have call predecessors, (65), 64 states have call successors, (65) [2022-12-14 09:58:07,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 446 transitions. [2022-12-14 09:58:07,117 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 446 transitions. Word has length 75 [2022-12-14 09:58:07,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:58:07,117 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 446 transitions. [2022-12-14 09:58:07,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 09:58:07,118 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 446 transitions. [2022-12-14 09:58:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 09:58:07,122 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:58:07,123 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:58:07,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:58:07,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:58:07,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:58:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:58:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash 712492228, now seen corresponding path program 1 times [2022-12-14 09:58:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:58:07,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210194038] [2022-12-14 09:58:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:58:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:58:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:58:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:58:07,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:58:07,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210194038] [2022-12-14 09:58:07,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210194038] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:58:07,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259759401] [2022-12-14 09:58:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:58:07,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:58:07,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:58:07,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:58:07,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:58:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:58:07,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 09:58:07,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:58:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:58:07,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:58:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:58:07,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259759401] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:58:07,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1276634362] [2022-12-14 09:58:07,690 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 09:58:07,690 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:58:07,691 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:58:07,691 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:58:07,691 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:58:34,713 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 09:58:34,990 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-12-14 09:58:36,484 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-12-14 09:58:36,521 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 09:58:36,793 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-12-14 09:59:04,771 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-12-14 09:59:04,803 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-12-14 09:59:04,843 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 444 for LOIs [2022-12-14 09:59:05,450 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 437 for LOIs [2022-12-14 09:59:05,689 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 251 for LOIs [2022-12-14 09:59:05,729 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:59:49,091 WARN L233 SmtUtils]: Spent 12.52s on a formula simplification. DAG size of input: 589 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:00:01,448 WARN L233 SmtUtils]: Spent 12.09s on a formula simplification. DAG size of input: 591 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:00:46,864 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 609 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:00:57,061 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 607 DAG size of output: 477 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:01:04,033 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 643 DAG size of output: 513 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:01:13,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1276634362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:13,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:01:13,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-12-14 10:01:13,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25184235] [2022-12-14 10:01:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:13,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-14 10:01:13,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:13,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-14 10:01:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=3126, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 10:01:13,012 INFO L87 Difference]: Start difference. First operand 308 states and 446 transitions. Second operand has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 10:01:20,139 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 543 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:01:26,934 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 545 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:01:33,477 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 589 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:01:39,115 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 587 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:01:51,085 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 583 DAG size of output: 446 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:01:58,449 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 590 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:02:04,380 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 586 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:02:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:02:20,628 INFO L93 Difference]: Finished difference Result 527 states and 767 transitions. [2022-12-14 10:02:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-14 10:02:20,629 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 80 [2022-12-14 10:02:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:02:20,632 INFO L225 Difference]: With dead ends: 527 [2022-12-14 10:02:20,632 INFO L226 Difference]: Without dead ends: 458 [2022-12-14 10:02:20,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 175.3s TimeCoverageRelationStatistics Valid=248, Invalid=4042, Unknown=0, NotChecked=0, Total=4290 [2022-12-14 10:02:20,633 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 278 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 6362 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 6375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 6362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:02:20,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 4542 Invalid, 6375 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13 Valid, 6362 Invalid, 0 Unknown, 0 Unchecked, 18.9s Time] [2022-12-14 10:02:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-12-14 10:02:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 402. [2022-12-14 10:02:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 291 states have (on average 1.4604810996563573) internal successors, (425), 294 states have internal predecessors, (425), 79 states have call successors, (79), 33 states have call predecessors, (79), 31 states have return successors, (80), 74 states have call predecessors, (80), 78 states have call successors, (80) [2022-12-14 10:02:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 584 transitions. [2022-12-14 10:02:20,884 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 584 transitions. Word has length 80 [2022-12-14 10:02:20,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:02:20,884 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 584 transitions. [2022-12-14 10:02:20,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-14 10:02:20,885 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 584 transitions. [2022-12-14 10:02:20,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 10:02:20,886 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:02:20,886 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:02:20,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 10:02:21,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:02:21,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:02:21,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:02:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1429020766, now seen corresponding path program 1 times [2022-12-14 10:02:21,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:02:21,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837637960] [2022-12-14 10:02:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:02:21,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:02:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:02:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 10:02:21,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:02:21,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837637960] [2022-12-14 10:02:21,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837637960] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:02:21,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664548014] [2022-12-14 10:02:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:02:21,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:02:21,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:02:21,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:02:21,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:02:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:02:21,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:02:21,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:02:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 10:02:21,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:02:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 10:02:21,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664548014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:02:21,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1992495646] [2022-12-14 10:02:21,401 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 10:02:21,401 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:02:21,402 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:02:21,402 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:02:21,402 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:03:01,070 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 10:03:01,353 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-12-14 10:03:01,637 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:03:37,349 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 579 DAG size of output: 342 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:04:04,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1992495646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:04:04,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:04:04,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 10:04:04,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33873949] [2022-12-14 10:04:04,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:04:04,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 10:04:04,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:04:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 10:04:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-12-14 10:04:04,884 INFO L87 Difference]: Start difference. First operand 402 states and 584 transitions. Second operand has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 10:04:32,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:04:32,483 INFO L93 Difference]: Finished difference Result 664 states and 994 transitions. [2022-12-14 10:04:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 10:04:32,484 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 81 [2022-12-14 10:04:32,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:04:32,486 INFO L225 Difference]: With dead ends: 664 [2022-12-14 10:04:32,486 INFO L226 Difference]: Without dead ends: 487 [2022-12-14 10:04:32,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 83.8s TimeCoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 10:04:32,488 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 230 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:04:32,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2732 Invalid, 2229 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-12-14 10:04:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-12-14 10:04:32,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 415. [2022-12-14 10:04:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 301 states have (on average 1.458471760797342) internal successors, (439), 305 states have internal predecessors, (439), 81 states have call successors, (81), 34 states have call predecessors, (81), 32 states have return successors, (82), 75 states have call predecessors, (82), 80 states have call successors, (82) [2022-12-14 10:04:32,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 602 transitions. [2022-12-14 10:04:32,790 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 602 transitions. Word has length 81 [2022-12-14 10:04:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:04:32,790 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 602 transitions. [2022-12-14 10:04:32,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 10:04:32,790 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 602 transitions. [2022-12-14 10:04:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 10:04:32,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:04:32,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:04:32,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:04:32,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:04:32,993 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:04:32,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:04:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1234144664, now seen corresponding path program 1 times [2022-12-14 10:04:32,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:04:32,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868768985] [2022-12-14 10:04:32,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:04:32,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:04:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:04:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 10:04:33,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:04:33,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868768985] [2022-12-14 10:04:33,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868768985] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:04:33,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292487832] [2022-12-14 10:04:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:04:33,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:04:33,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:04:33,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:04:33,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:04:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:04:33,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:04:33,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:04:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 10:04:33,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:04:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 10:04:33,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292487832] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:04:33,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1077140150] [2022-12-14 10:04:33,358 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-12-14 10:04:33,358 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:04:33,358 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:04:33,359 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:04:33,359 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:05:10,069 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:05:10,345 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-12-14 10:05:10,404 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-12-14 10:05:10,464 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-12-14 10:05:10,526 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 10:05:10,808 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:05:46,127 WARN L233 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 619 DAG size of output: 460 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:06:01,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1077140150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:06:01,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:06:01,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 10:06:01,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036871261] [2022-12-14 10:06:01,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:06:01,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 10:06:01,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:06:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 10:06:01,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 10:06:01,679 INFO L87 Difference]: Start difference. First operand 415 states and 602 transitions. Second operand has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 10:06:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:06:16,543 INFO L93 Difference]: Finished difference Result 705 states and 1063 transitions. [2022-12-14 10:06:16,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 10:06:16,545 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 84 [2022-12-14 10:06:16,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:06:16,547 INFO L225 Difference]: With dead ends: 705 [2022-12-14 10:06:16,547 INFO L226 Difference]: Without dead ends: 528 [2022-12-14 10:06:16,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 219 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 10:06:16,548 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 138 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 3056 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:06:16,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 3171 Invalid, 3067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 3056 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-12-14 10:06:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-12-14 10:06:16,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 482. [2022-12-14 10:06:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 361 states have (on average 1.4764542936288088) internal successors, (533), 366 states have internal predecessors, (533), 85 states have call successors, (85), 37 states have call predecessors, (85), 35 states have return successors, (86), 78 states have call predecessors, (86), 84 states have call successors, (86) [2022-12-14 10:06:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 704 transitions. [2022-12-14 10:06:16,932 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 704 transitions. Word has length 84 [2022-12-14 10:06:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:06:16,932 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 704 transitions. [2022-12-14 10:06:16,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-12-14 10:06:16,933 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 704 transitions. [2022-12-14 10:06:16,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 10:06:16,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:06:16,934 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:06:16,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:06:17,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:06:17,136 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:06:17,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:06:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2037837053, now seen corresponding path program 1 times [2022-12-14 10:06:17,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:06:17,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753375181] [2022-12-14 10:06:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:06:17,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:06:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:06:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 10:06:17,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:06:17,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753375181] [2022-12-14 10:06:17,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753375181] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:06:17,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669694058] [2022-12-14 10:06:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:06:17,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:06:17,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:06:17,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:06:17,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb566f4-ad24-4919-8548-45e65d0277fa/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:06:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:06:17,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:06:17,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:06:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 10:06:17,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:06:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 10:06:17,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669694058] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:06:17,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1624365335] [2022-12-14 10:06:17,592 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 10:06:17,592 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:06:17,592 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:06:17,592 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:06:17,592 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:07:25,882 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 10:07:26,165 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 436 for LOIs [2022-12-14 10:07:26,431 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 254 for LOIs [2022-12-14 10:07:27,881 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2022-12-14 10:07:27,917 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-12-14 10:07:37,083 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 246 for LOIs [2022-12-14 10:07:37,114 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2022-12-14 10:07:37,151 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 440 for LOIs [2022-12-14 10:07:37,758 INFO L180 IcfgInterpreter]: Interpretation finished