./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW --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 e2402328b10acba07d45e1b6bd18216e1645c73446d4739f1dc37852ed64162e --- 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-4e7fbc6 [2022-11-23 16:04:48,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:04:48,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:04:48,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:04:48,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:04:48,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:04:48,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:04:48,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:04:48,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:04:48,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:04:48,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:04:48,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:04:48,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:04:48,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:04:48,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:04:48,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:04:48,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:04:48,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:04:48,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:04:48,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:04:48,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:04:48,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:04:48,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:04:48,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:04:48,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:04:48,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:04:48,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:04:48,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:04:48,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:04:48,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:04:48,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:04:48,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:04:48,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:04:48,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:04:48,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:04:48,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:04:48,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:04:48,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:04:48,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:04:48,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:04:48,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:04:48,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 16:04:48,490 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:04:48,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:04:48,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:04:48,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:04:48,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:04:48,492 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:04:48,492 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:04:48,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:04:48,493 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:04:48,493 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:04:48,493 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:04:48,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:04:48,494 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:04:48,494 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:04:48,494 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:04:48,494 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:04:48,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:04:48,495 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:04:48,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:04:48,496 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:04:48,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:04:48,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:04:48,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:04:48,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:04:48,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:04:48,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:04:48,498 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:04:48,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:04:48,498 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:04:48,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:04:48,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:04:48,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:04:48,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:04:48,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:04:48,500 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:04:48,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:04:48,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:04:48,500 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:04:48,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:04:48,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:04:48,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:04:48,501 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_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2402328b10acba07d45e1b6bd18216e1645c73446d4739f1dc37852ed64162e [2022-11-23 16:04:48,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:04:48,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:04:48,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:04:48,757 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:04:48,757 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:04:48,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec9_product29.cil.c [2022-11-23 16:04:51,792 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:04:52,183 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:04:52,184 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/sv-benchmarks/c/product-lines/email_spec9_product29.cil.c [2022-11-23 16:04:52,202 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/data/c151411e1/bf72432b73b14328a0a5b57c3a7ceb27/FLAG73e7e8ebe [2022-11-23 16:04:52,217 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/data/c151411e1/bf72432b73b14328a0a5b57c3a7ceb27 [2022-11-23 16:04:52,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:04:52,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:04:52,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:04:52,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:04:52,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:04:52,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:04:52" (1/1) ... [2022-11-23 16:04:52,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116d29e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:52, skipping insertion in model container [2022-11-23 16:04:52,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:04:52" (1/1) ... [2022-11-23 16:04:52,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:04:52,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:04:52,853 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_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/sv-benchmarks/c/product-lines/email_spec9_product29.cil.c[65089,65102] [2022-11-23 16:04:52,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:04:52,877 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:04:53,044 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_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/sv-benchmarks/c/product-lines/email_spec9_product29.cil.c[65089,65102] [2022-11-23 16:04:53,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:04:53,088 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:04:53,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53 WrapperNode [2022-11-23 16:04:53,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:04:53,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:04:53,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:04:53,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:04:53,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,232 INFO L138 Inliner]: procedures = 132, calls = 232, calls flagged for inlining = 56, calls inlined = 48, statements flattened = 939 [2022-11-23 16:04:53,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:04:53,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:04:53,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:04:53,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:04:53,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,322 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:04:53,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:04:53,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:04:53,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:04:53,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (1/1) ... [2022-11-23 16:04:53,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:04:53,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:53,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:04:53,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:04:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 16:04:53,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 16:04:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 16:04:53,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 16:04:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 16:04:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 16:04:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 16:04:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 16:04:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 16:04:53,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 16:04:53,447 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 16:04:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 16:04:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 16:04:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 16:04:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 16:04:53,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 16:04:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 16:04:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 16:04:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 16:04:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 16:04:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 16:04:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 16:04:53,450 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 16:04:53,450 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 16:04:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 16:04:53,451 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 16:04:53,451 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 16:04:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 16:04:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 16:04:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:04:53,452 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 16:04:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 16:04:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 16:04:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 16:04:53,453 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 16:04:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 16:04:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 16:04:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 16:04:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 16:04:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 16:04:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 16:04:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 16:04:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 16:04:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 16:04:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-23 16:04:53,455 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-23 16:04:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 16:04:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 16:04:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 16:04:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 16:04:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 16:04:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 16:04:53,457 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 16:04:53,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 16:04:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:04:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 16:04:53,458 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 16:04:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 16:04:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 16:04:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:04:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:04:53,727 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:04:53,730 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:04:54,832 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:04:55,522 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:04:55,522 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:04:55,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:55 BoogieIcfgContainer [2022-11-23 16:04:55,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:04:55,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:04:55,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:04:55,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:04:55,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:04:52" (1/3) ... [2022-11-23 16:04:55,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a269ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:04:55, skipping insertion in model container [2022-11-23 16:04:55,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:53" (2/3) ... [2022-11-23 16:04:55,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a269ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:04:55, skipping insertion in model container [2022-11-23 16:04:55,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:55" (3/3) ... [2022-11-23 16:04:55,540 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product29.cil.c [2022-11-23 16:04:55,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:04:55,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:04:55,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:04:55,640 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;@12459d32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:04:55,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:04:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 120 states have (on average 1.3083333333333333) internal successors, (157), 125 states have internal predecessors, (157), 63 states have call successors, (63), 28 states have call predecessors, (63), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-23 16:04:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 16:04:55,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:55,660 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:04:55,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:55,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1714680163, now seen corresponding path program 1 times [2022-11-23 16:04:55,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:55,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198774265] [2022-11-23 16:04:55,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:55,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:04:56,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:56,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198774265] [2022-11-23 16:04:56,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198774265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:56,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:56,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:04:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075614357] [2022-11-23 16:04:56,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:56,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 16:04:56,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 16:04:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 16:04:56,217 INFO L87 Difference]: Start difference. First operand has 213 states, 120 states have (on average 1.3083333333333333) internal successors, (157), 125 states have internal predecessors, (157), 63 states have call successors, (63), 28 states have call predecessors, (63), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 16:04:56,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:56,355 INFO L93 Difference]: Finished difference Result 334 states and 437 transitions. [2022-11-23 16:04:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 16:04:56,360 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-11-23 16:04:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:56,379 INFO L225 Difference]: With dead ends: 334 [2022-11-23 16:04:56,379 INFO L226 Difference]: Without dead ends: 210 [2022-11-23 16:04:56,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 16:04:56,395 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:56,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 241 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:04:56,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-23 16:04:56,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-11-23 16:04:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 118 states have (on average 1.2796610169491525) internal successors, (151), 122 states have internal predecessors, (151), 63 states have call successors, (63), 28 states have call predecessors, (63), 28 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-23 16:04:56,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 276 transitions. [2022-11-23 16:04:56,461 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 276 transitions. Word has length 71 [2022-11-23 16:04:56,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:56,462 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 276 transitions. [2022-11-23 16:04:56,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 16:04:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 276 transitions. [2022-11-23 16:04:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 16:04:56,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:56,467 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:04:56,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:04:56,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:56,468 INFO L85 PathProgramCache]: Analyzing trace with hash 727356344, now seen corresponding path program 1 times [2022-11-23 16:04:56,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:56,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707571918] [2022-11-23 16:04:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:56,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:04:56,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:56,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707571918] [2022-11-23 16:04:56,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707571918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:56,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:56,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671100918] [2022-11-23 16:04:56,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:56,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:56,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:56,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:56,766 INFO L87 Difference]: Start difference. First operand 210 states and 276 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 16:04:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:56,948 INFO L93 Difference]: Finished difference Result 330 states and 422 transitions. [2022-11-23 16:04:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:56,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-11-23 16:04:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:56,951 INFO L225 Difference]: With dead ends: 330 [2022-11-23 16:04:56,953 INFO L226 Difference]: Without dead ends: 212 [2022-11-23 16:04:56,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:56,956 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:56,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 475 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:04:56,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-23 16:04:56,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-11-23 16:04:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 120 states have (on average 1.275) internal successors, (153), 124 states have internal predecessors, (153), 63 states have call successors, (63), 28 states have call predecessors, (63), 28 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-23 16:04:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 278 transitions. [2022-11-23 16:04:56,980 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 278 transitions. Word has length 72 [2022-11-23 16:04:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:56,981 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 278 transitions. [2022-11-23 16:04:56,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 16:04:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 278 transitions. [2022-11-23 16:04:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 16:04:56,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:56,985 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] [2022-11-23 16:04:56,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:04:56,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:56,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:56,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1149672975, now seen corresponding path program 1 times [2022-11-23 16:04:56,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:56,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994445178] [2022-11-23 16:04:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:56,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:04:57,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:57,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994445178] [2022-11-23 16:04:57,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994445178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:57,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:57,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:57,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386832805] [2022-11-23 16:04:57,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:57,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:57,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:57,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:57,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:57,216 INFO L87 Difference]: Start difference. First operand 212 states and 278 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 16:04:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:57,389 INFO L93 Difference]: Finished difference Result 459 states and 623 transitions. [2022-11-23 16:04:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:57,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-23 16:04:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:57,396 INFO L225 Difference]: With dead ends: 459 [2022-11-23 16:04:57,396 INFO L226 Difference]: Without dead ends: 265 [2022-11-23 16:04:57,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:57,405 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 59 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:57,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 492 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:04:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-23 16:04:57,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 260. [2022-11-23 16:04:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 154 states have (on average 1.3506493506493507) internal successors, (208), 158 states have internal predecessors, (208), 77 states have call successors, (77), 28 states have call predecessors, (77), 28 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2022-11-23 16:04:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 361 transitions. [2022-11-23 16:04:57,466 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 361 transitions. Word has length 77 [2022-11-23 16:04:57,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:57,468 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 361 transitions. [2022-11-23 16:04:57,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 16:04:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 361 transitions. [2022-11-23 16:04:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 16:04:57,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:57,479 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] [2022-11-23 16:04:57,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:04:57,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash -956458370, now seen corresponding path program 1 times [2022-11-23 16:04:57,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:57,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059800854] [2022-11-23 16:04:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:57,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:04:57,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:57,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059800854] [2022-11-23 16:04:57,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059800854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:04:57,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787837765] [2022-11-23 16:04:57,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:57,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:04:57,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:57,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:04:57,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:04:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:58,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:04:58,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:04:58,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:04:58,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787837765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:04:58,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1797497225] [2022-11-23 16:04:58,354 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-23 16:04:58,354 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:04:58,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:04:58,366 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:04:58,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:05:29,852 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 16:05:30,212 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-23 16:05:30,560 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:05:45,487 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:51,914 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:59,121 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:06:05,815 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:06:32,668 WARN L233 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 518 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:06:45,957 WARN L233 SmtUtils]: Spent 12.95s on a formula simplification. DAG size of input: 581 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:06:59,327 WARN L233 SmtUtils]: Spent 13.00s on a formula simplification. DAG size of input: 589 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:07:20,667 WARN L233 SmtUtils]: Spent 20.93s on a formula simplification. DAG size of input: 586 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:07:32,030 WARN L233 SmtUtils]: Spent 10.94s on a formula simplification. DAG size of input: 584 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:07:38,060 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 553 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:07:38,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1797497225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:07:38,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:07:38,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-23 16:07:38,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766323384] [2022-11-23 16:07:38,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:07:38,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 16:07:38,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:07:38,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 16:07:38,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-23 16:07:38,072 INFO L87 Difference]: Start difference. First operand 260 states and 361 transitions. Second operand has 21 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-23 16:07:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:07:49,640 INFO L93 Difference]: Finished difference Result 602 states and 889 transitions. [2022-11-23 16:07:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 16:07:49,641 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 78 [2022-11-23 16:07:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:07:49,644 INFO L225 Difference]: With dead ends: 602 [2022-11-23 16:07:49,644 INFO L226 Difference]: Without dead ends: 360 [2022-11-23 16:07:49,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 127.5s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-23 16:07:49,647 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 169 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:07:49,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 3980 Invalid, 2366 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-23 16:07:49,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-23 16:07:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 283. [2022-11-23 16:07:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 176 states have (on average 1.3693181818181819) internal successors, (241), 180 states have internal predecessors, (241), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2022-11-23 16:07:49,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 394 transitions. [2022-11-23 16:07:49,790 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 394 transitions. Word has length 78 [2022-11-23 16:07:49,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:07:49,791 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 394 transitions. [2022-11-23 16:07:49,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-23 16:07:49,791 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 394 transitions. [2022-11-23 16:07:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 16:07:49,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:49,794 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:07:49,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:07:50,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-23 16:07:50,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:50,008 INFO L85 PathProgramCache]: Analyzing trace with hash -513646135, now seen corresponding path program 1 times [2022-11-23 16:07:50,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:07:50,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819602296] [2022-11-23 16:07:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:50,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:07:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:07:50,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:07:50,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819602296] [2022-11-23 16:07:50,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819602296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:07:50,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:07:50,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:07:50,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363467024] [2022-11-23 16:07:50,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:07:50,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:07:50,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:07:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:07:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:07:50,129 INFO L87 Difference]: Start difference. First operand 283 states and 394 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 16:07:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:07:50,479 INFO L93 Difference]: Finished difference Result 669 states and 968 transitions. [2022-11-23 16:07:50,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:07:50,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-23 16:07:50,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:07:50,483 INFO L225 Difference]: With dead ends: 669 [2022-11-23 16:07:50,483 INFO L226 Difference]: Without dead ends: 410 [2022-11-23 16:07:50,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:07:50,485 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 57 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:07:50,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 496 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:07:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-23 16:07:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 405. [2022-11-23 16:07:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 267 states have (on average 1.4269662921348314) internal successors, (381), 271 states have internal predecessors, (381), 108 states have call successors, (108), 29 states have call predecessors, (108), 29 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2022-11-23 16:07:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 596 transitions. [2022-11-23 16:07:50,675 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 596 transitions. Word has length 83 [2022-11-23 16:07:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:07:50,676 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 596 transitions. [2022-11-23 16:07:50,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 16:07:50,676 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 596 transitions. [2022-11-23 16:07:50,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 16:07:50,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:50,679 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:07:50,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:07:50,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:50,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1638132505, now seen corresponding path program 1 times [2022-11-23 16:07:50,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:07:50,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45605773] [2022-11-23 16:07:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:07:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:07:50,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:07:50,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45605773] [2022-11-23 16:07:50,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45605773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:07:50,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31558090] [2022-11-23 16:07:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:50,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:07:50,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:07:50,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:07:50,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:07:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:51,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:07:51,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:07:51,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:07:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:07:51,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31558090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:07:51,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1120407177] [2022-11-23 16:07:51,274 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-23 16:07:51,274 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:07:51,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:07:51,275 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:07:51,275 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:08:31,896 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 16:08:32,199 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 261 for LOIs [2022-11-23 16:08:33,955 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-11-23 16:08:34,000 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-11-23 16:08:34,298 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 263 for LOIs [2022-11-23 16:08:37,529 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 225 for LOIs [2022-11-23 16:08:37,589 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 264 for LOIs [2022-11-23 16:08:44,184 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2022-11-23 16:08:44,251 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 242 for LOIs [2022-11-23 16:08:44,290 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 484 for LOIs [2022-11-23 16:08:47,583 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 250 for LOIs [2022-11-23 16:08:47,629 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:09:02,195 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:08,671 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:15,550 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:22,051 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:48,961 WARN L233 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 518 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:10:10,122 WARN L233 SmtUtils]: Spent 20.83s on a formula simplification. DAG size of input: 592 DAG size of output: 461 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:10:21,513 WARN L233 SmtUtils]: Spent 11.02s on a formula simplification. DAG size of input: 594 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:10:33,013 WARN L233 SmtUtils]: Spent 11.13s on a formula simplification. DAG size of input: 595 DAG size of output: 342 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:10:44,405 WARN L233 SmtUtils]: Spent 10.98s on a formula simplification. DAG size of input: 593 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:01,140 WARN L233 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 479 DAG size of output: 273 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:43,679 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 466 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:12:05,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1120407177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:12:05,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:12:05,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2022-11-23 16:12:05,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515644275] [2022-11-23 16:12:05,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:12:05,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-23 16:12:05,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:12:05,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-23 16:12:05,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3740, Unknown=0, NotChecked=0, Total=3906 [2022-11-23 16:12:05,244 INFO L87 Difference]: Start difference. First operand 405 states and 596 transitions. Second operand has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 16:12:28,156 WARN L233 SmtUtils]: Spent 19.30s on a formula simplification. DAG size of input: 510 DAG size of output: 456 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:17,088 WARN L233 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 588 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:28,795 WARN L233 SmtUtils]: Spent 10.25s on a formula simplification. DAG size of input: 595 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:19,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:14:19,974 INFO L93 Difference]: Finished difference Result 952 states and 1457 transitions. [2022-11-23 16:14:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-23 16:14:19,975 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 84 [2022-11-23 16:14:19,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:14:19,979 INFO L225 Difference]: With dead ends: 952 [2022-11-23 16:14:19,979 INFO L226 Difference]: Without dead ends: 610 [2022-11-23 16:14:19,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 291.6s TimeCoverageRelationStatistics Valid=271, Invalid=6049, Unknown=0, NotChecked=0, Total=6320 [2022-11-23 16:14:19,989 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 228 mSDsluCounter, 6969 mSDsCounter, 0 mSdLazyCounter, 9096 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 7227 SdHoareTripleChecker+Invalid, 9133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:14:19,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 7227 Invalid, 9133 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [37 Valid, 9096 Invalid, 0 Unknown, 0 Unchecked, 39.7s Time] [2022-11-23 16:14:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-11-23 16:14:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 491. [2022-11-23 16:14:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 333 states have (on average 1.4384384384384385) internal successors, (479), 339 states have internal predecessors, (479), 121 states have call successors, (121), 39 states have call predecessors, (121), 36 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-23 16:14:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 720 transitions. [2022-11-23 16:14:20,293 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 720 transitions. Word has length 84 [2022-11-23 16:14:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:14:20,294 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 720 transitions. [2022-11-23 16:14:20,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 16:14:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 720 transitions. [2022-11-23 16:14:20,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 16:14:20,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:14:20,297 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:14:20,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:14:20,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 16:14:20,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:14:20,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:14:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2058312930, now seen corresponding path program 1 times [2022-11-23 16:14:20,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:14:20,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058693876] [2022-11-23 16:14:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:14:20,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:14:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:14:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:14:20,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:14:20,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058693876] [2022-11-23 16:14:20,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058693876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:14:20,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671105146] [2022-11-23 16:14:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:14:20,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:14:20,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:14:20,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:14:20,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:14:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:14:21,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:14:21,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:14:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:14:21,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:14:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:14:21,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671105146] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:14:21,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1144825261] [2022-11-23 16:14:21,109 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-23 16:14:21,109 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:14:21,110 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:14:21,110 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:14:21,110 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:15:14,587 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 16:15:14,918 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 236 for LOIs [2022-11-23 16:15:14,986 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 457 for LOIs [2022-11-23 16:15:15,344 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 235 for LOIs [2022-11-23 16:15:15,410 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-23 16:15:15,725 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:15:30,311 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 443 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:36,764 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 466 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:43,942 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:50,735 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:18,666 WARN L233 SmtUtils]: Spent 7.44s on a formula simplification. DAG size of input: 518 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:38,755 WARN L233 SmtUtils]: Spent 19.77s on a formula simplification. DAG size of input: 627 DAG size of output: 517 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:50,290 WARN L233 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 640 DAG size of output: 410 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:56,263 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 551 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:02,298 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 553 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:28,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1144825261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:17:28,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:17:28,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-23 16:17:28,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431264015] [2022-11-23 16:17:28,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:17:28,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 16:17:28,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:17:28,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 16:17:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 16:17:28,753 INFO L87 Difference]: Start difference. First operand 491 states and 720 transitions. Second operand has 30 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-23 16:17:40,899 WARN L233 SmtUtils]: Spent 10.06s on a formula simplification. DAG size of input: 566 DAG size of output: 444 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:18:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:18:02,425 INFO L93 Difference]: Finished difference Result 1000 states and 1528 transitions. [2022-11-23 16:18:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 16:18:02,427 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 87 [2022-11-23 16:18:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:18:02,431 INFO L225 Difference]: With dead ends: 1000 [2022-11-23 16:18:02,432 INFO L226 Difference]: Without dead ends: 658 [2022-11-23 16:18:02,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 148.5s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 16:18:02,434 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 178 mSDsluCounter, 3988 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 3700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:18:02,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 4237 Invalid, 3700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2022-11-23 16:18:02,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-23 16:18:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 564. [2022-11-23 16:18:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 398 states have (on average 1.4623115577889447) internal successors, (582), 406 states have internal predecessors, (582), 126 states have call successors, (126), 42 states have call predecessors, (126), 39 states have return successors, (125), 117 states have call predecessors, (125), 125 states have call successors, (125) [2022-11-23 16:18:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 833 transitions. [2022-11-23 16:18:02,838 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 833 transitions. Word has length 87 [2022-11-23 16:18:02,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:18:02,839 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 833 transitions. [2022-11-23 16:18:02,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-23 16:18:02,839 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 833 transitions. [2022-11-23 16:18:02,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 16:18:02,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:18:02,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:18:02,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:18:03,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:18:03,051 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:18:03,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:18:03,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1079992575, now seen corresponding path program 1 times [2022-11-23 16:18:03,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:18:03,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171383138] [2022-11-23 16:18:03,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:18:03,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:18:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:18:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:18:03,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:18:03,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171383138] [2022-11-23 16:18:03,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171383138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:18:03,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600490424] [2022-11-23 16:18:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:18:03,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:18:03,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:18:03,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:18:03,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c411dc5a-a9c4-4d4d-999d-e5f10fb97e2c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:18:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:18:03,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:18:03,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:18:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:18:03,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:18:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:18:03,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600490424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:18:03,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2071366610] [2022-11-23 16:18:03,672 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-23 16:18:03,672 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:18:03,674 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:18:03,675 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:18:03,675 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs