./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS --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 4c8df6e468eecbce541189806946dc0233fe629a6f2a971a54d2c5d7914e97b3 --- 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-8393723 [2022-11-19 07:46:31,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:46:31,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:46:31,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:46:31,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:46:31,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:46:31,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:46:31,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:46:31,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:46:31,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:46:31,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:46:31,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:46:31,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:46:31,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:46:31,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:46:31,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:46:31,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:46:31,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:46:31,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:46:31,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:46:31,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:46:31,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:46:31,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:46:31,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:46:31,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:46:31,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:46:31,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:46:31,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:46:31,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:46:31,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:46:31,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:46:31,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:46:31,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:46:31,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:46:31,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:46:31,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:46:31,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:46:31,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:46:31,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:46:31,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:46:31,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:46:31,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:46:31,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:46:31,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:46:31,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:46:31,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:46:31,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:46:31,509 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:46:31,509 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:46:31,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:46:31,510 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:46:31,510 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:46:31,512 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:46:31,512 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:46:31,512 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:46:31,513 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:46:31,513 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:46:31,513 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:46:31,514 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:46:31,514 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:46:31,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:46:31,515 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:46:31,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:46:31,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:46:31,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:46:31,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:46:31,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:46:31,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:46:31,519 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:46:31,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:46:31,520 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:46:31,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:46:31,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:46:31,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:46:31,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:46:31,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:46:31,522 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:46:31,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:46:31,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:46:31,523 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:46:31,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:46:31,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:46:31,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:46:31,524 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_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8df6e468eecbce541189806946dc0233fe629a6f2a971a54d2c5d7914e97b3 [2022-11-19 07:46:31,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:46:31,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:46:31,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:46:31,978 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:46:31,979 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:46:31,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec6_product34.cil.c [2022-11-19 07:46:32,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/data/22e2d946b/82a22f1d68e64aa2a0a3fe9302be2662/FLAG9c8aca440 [2022-11-19 07:46:33,061 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:46:33,065 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/sv-benchmarks/c/product-lines/email_spec6_product34.cil.c [2022-11-19 07:46:33,118 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/data/22e2d946b/82a22f1d68e64aa2a0a3fe9302be2662/FLAG9c8aca440 [2022-11-19 07:46:33,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/data/22e2d946b/82a22f1d68e64aa2a0a3fe9302be2662 [2022-11-19 07:46:33,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:46:33,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:46:33,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:46:33,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:46:33,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:46:33,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:33" (1/1) ... [2022-11-19 07:46:33,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0752a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:33, skipping insertion in model container [2022-11-19 07:46:33,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:33" (1/1) ... [2022-11-19 07:46:33,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:46:33,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:46:33,836 WARN L234 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_26b8834a-275e-4bfa-9432-c0b271227620/sv-benchmarks/c/product-lines/email_spec6_product34.cil.c[11485,11498] [2022-11-19 07:46:34,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:46:34,161 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:46:34,211 WARN L234 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_26b8834a-275e-4bfa-9432-c0b271227620/sv-benchmarks/c/product-lines/email_spec6_product34.cil.c[11485,11498] [2022-11-19 07:46:34,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:46:34,393 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:46:34,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34 WrapperNode [2022-11-19 07:46:34,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:46:34,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:46:34,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:46:34,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:46:34,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,538 INFO L138 Inliner]: procedures = 135, calls = 244, calls flagged for inlining = 63, calls inlined = 60, statements flattened = 1123 [2022-11-19 07:46:34,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:46:34,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:46:34,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:46:34,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:46:34,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,621 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:46:34,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:46:34,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:46:34,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:46:34,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (1/1) ... [2022-11-19 07:46:34,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:46:34,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:46:34,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:46:34,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:46:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:46:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:46:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 07:46:34,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 07:46:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:46:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:46:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 07:46:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 07:46:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:46:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:46:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:46:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:46:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:46:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:46:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:46:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:46:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:46:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:46:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:46:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:46:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:46:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:46:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:46:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:46:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:46:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:46:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:46:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:46:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:46:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:46:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:46:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:46:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:46:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:46:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 07:46:34,776 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 07:46:34,776 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:46:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:46:34,777 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:46:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:46:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:46:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:46:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:46:34,779 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:46:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-19 07:46:34,781 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-19 07:46:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:46:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:46:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:46:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:46:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:46:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:46:34,786 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:46:34,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:46:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:46:34,787 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:46:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:46:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 07:46:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 07:46:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:46:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:46:35,185 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:46:35,188 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:46:36,717 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:46:37,599 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:46:37,600 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:46:37,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:37 BoogieIcfgContainer [2022-11-19 07:46:37,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:46:37,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:46:37,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:46:37,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:46:37,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:33" (1/3) ... [2022-11-19 07:46:37,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773a5f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:37, skipping insertion in model container [2022-11-19 07:46:37,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:34" (2/3) ... [2022-11-19 07:46:37,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773a5f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:37, skipping insertion in model container [2022-11-19 07:46:37,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:37" (3/3) ... [2022-11-19 07:46:37,618 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product34.cil.c [2022-11-19 07:46:37,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:46:37,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:46:37,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:46:37,776 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;@3d8302e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:46:37,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:46:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 137 states have internal predecessors, (170), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-11-19 07:46:37,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 07:46:37,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:37,823 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:37,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:37,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:37,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1254057680, now seen corresponding path program 1 times [2022-11-19 07:46:37,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:37,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079914126] [2022-11-19 07:46:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:37,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:46:38,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:38,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079914126] [2022-11-19 07:46:38,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079914126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:38,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:38,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:46:38,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929250439] [2022-11-19 07:46:38,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:38,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:46:38,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:46:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:46:38,584 INFO L87 Difference]: Start difference. First operand has 235 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 137 states have internal predecessors, (170), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:46:38,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:38,808 INFO L93 Difference]: Finished difference Result 378 states and 503 transitions. [2022-11-19 07:46:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:46:38,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 87 [2022-11-19 07:46:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:38,829 INFO L225 Difference]: With dead ends: 378 [2022-11-19 07:46:38,830 INFO L226 Difference]: Without dead ends: 232 [2022-11-19 07:46:38,839 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 [2022-11-19 07:46:38,844 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:38,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:46:38,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-19 07:46:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-11-19 07:46:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 134 states have internal predecessors, (164), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-19 07:46:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 309 transitions. [2022-11-19 07:46:38,973 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 309 transitions. Word has length 87 [2022-11-19 07:46:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:38,976 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 309 transitions. [2022-11-19 07:46:38,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:46:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 309 transitions. [2022-11-19 07:46:38,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-19 07:46:38,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:38,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:38,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:46:38,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash 803080450, now seen corresponding path program 1 times [2022-11-19 07:46:38,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:38,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816715340] [2022-11-19 07:46:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:38,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:46:39,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:39,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816715340] [2022-11-19 07:46:39,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816715340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:39,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:39,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:46:39,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323519000] [2022-11-19 07:46:39,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:39,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:46:39,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:46:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:46:39,501 INFO L87 Difference]: Start difference. First operand 232 states and 309 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 07:46:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:39,830 INFO L93 Difference]: Finished difference Result 374 states and 488 transitions. [2022-11-19 07:46:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:46:39,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 99 [2022-11-19 07:46:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:39,835 INFO L225 Difference]: With dead ends: 374 [2022-11-19 07:46:39,835 INFO L226 Difference]: Without dead ends: 234 [2022-11-19 07:46:39,836 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 [2022-11-19 07:46:39,838 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:39,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:46:39,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-19 07:46:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-11-19 07:46:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 136 states have internal predecessors, (166), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-19 07:46:39,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2022-11-19 07:46:39,876 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 99 [2022-11-19 07:46:39,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:39,877 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2022-11-19 07:46:39,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 07:46:39,878 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2022-11-19 07:46:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-19 07:46:39,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:39,885 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:39,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:46:39,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:39,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:39,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1477782135, now seen corresponding path program 1 times [2022-11-19 07:46:39,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:39,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844024830] [2022-11-19 07:46:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:39,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:46:40,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:40,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844024830] [2022-11-19 07:46:40,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844024830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:40,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:40,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:46:40,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844881710] [2022-11-19 07:46:40,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:40,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:46:40,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:46:40,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:46:40,102 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 07:46:40,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:40,294 INFO L93 Difference]: Finished difference Result 503 states and 689 transitions. [2022-11-19 07:46:40,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:46:40,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 104 [2022-11-19 07:46:40,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:40,299 INFO L225 Difference]: With dead ends: 503 [2022-11-19 07:46:40,299 INFO L226 Difference]: Without dead ends: 287 [2022-11-19 07:46:40,301 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 [2022-11-19 07:46:40,303 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 59 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:40,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 545 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:46:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-19 07:46:40,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 282. [2022-11-19 07:46:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 166 states have (on average 1.3313253012048192) internal successors, (221), 170 states have internal predecessors, (221), 87 states have call successors, (87), 28 states have call predecessors, (87), 28 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-19 07:46:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 394 transitions. [2022-11-19 07:46:40,370 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 394 transitions. Word has length 104 [2022-11-19 07:46:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:40,371 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 394 transitions. [2022-11-19 07:46:40,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 07:46:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 394 transitions. [2022-11-19 07:46:40,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 07:46:40,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:40,383 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:40,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:46:40,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash 755610130, now seen corresponding path program 1 times [2022-11-19 07:46:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:40,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583288197] [2022-11-19 07:46:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:40,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:46:40,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:40,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583288197] [2022-11-19 07:46:40,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583288197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:46:40,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564500735] [2022-11-19 07:46:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:40,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:46:40,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:46:40,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:46:40,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:46:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:41,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:46:41,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:46:41,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:46:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:46:41,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564500735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:46:41,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2070686996] [2022-11-19 07:46:41,505 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-11-19 07:46:41,512 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:46:41,518 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:46:41,526 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:46:41,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:47:12,520 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 07:47:12,832 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 07:47:13,285 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:47:57,624 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 490 DAG size of output: 286 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:04,550 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 502 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:12,368 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 512 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:29,740 WARN L233 SmtUtils]: Spent 17.04s on a formula simplification. DAG size of input: 577 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:42,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2070686996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:42,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:48:42,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-19 07:48:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563036286] [2022-11-19 07:48:42,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:42,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:48:42,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:48:42,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-11-19 07:48:42,740 INFO L87 Difference]: Start difference. First operand 282 states and 394 transitions. Second operand has 21 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-19 07:48:54,807 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 447 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:49:04,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:04,172 INFO L93 Difference]: Finished difference Result 612 states and 889 transitions. [2022-11-19 07:49:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 07:49:04,173 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 94 [2022-11-19 07:49:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:04,176 INFO L225 Difference]: With dead ends: 612 [2022-11-19 07:49:04,176 INFO L226 Difference]: Without dead ends: 348 [2022-11-19 07:49:04,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 99.2s TimeCoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-11-19 07:49:04,179 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 123 mSDsluCounter, 4047 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:04,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 4338 Invalid, 2268 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [15 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-19 07:49:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-19 07:49:04,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 305. [2022-11-19 07:49:04,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 188 states have (on average 1.351063829787234) internal successors, (254), 192 states have internal predecessors, (254), 87 states have call successors, (87), 29 states have call predecessors, (87), 29 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-19 07:49:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 427 transitions. [2022-11-19 07:49:04,319 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 427 transitions. Word has length 94 [2022-11-19 07:49:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:04,320 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 427 transitions. [2022-11-19 07:49:04,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-19 07:49:04,321 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 427 transitions. [2022-11-19 07:49:04,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-19 07:49:04,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:04,324 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:04,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:49:04,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:04,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:04,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1677630821, now seen corresponding path program 1 times [2022-11-19 07:49:04,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:04,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77723629] [2022-11-19 07:49:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:04,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:49:04,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:04,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77723629] [2022-11-19 07:49:04,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77723629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:49:04,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:49:04,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:49:04,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516500449] [2022-11-19 07:49:04,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:49:04,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:49:04,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:49:04,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:49:04,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:04,766 INFO L87 Difference]: Start difference. First operand 305 states and 427 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:49:05,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:49:05,152 INFO L93 Difference]: Finished difference Result 713 states and 1034 transitions. [2022-11-19 07:49:05,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:49:05,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 99 [2022-11-19 07:49:05,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:49:05,158 INFO L225 Difference]: With dead ends: 713 [2022-11-19 07:49:05,158 INFO L226 Difference]: Without dead ends: 432 [2022-11-19 07:49:05,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:49:05,161 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 57 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:49:05,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 557 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:49:05,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-19 07:49:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 427. [2022-11-19 07:49:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 279 states have (on average 1.4121863799283154) internal successors, (394), 283 states have internal predecessors, (394), 118 states have call successors, (118), 29 states have call predecessors, (118), 29 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-19 07:49:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 629 transitions. [2022-11-19 07:49:05,366 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 629 transitions. Word has length 99 [2022-11-19 07:49:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:49:05,366 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 629 transitions. [2022-11-19 07:49:05,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:49:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 629 transitions. [2022-11-19 07:49:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-19 07:49:05,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:49:05,371 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:49:05,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:49:05,372 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:49:05,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:49:05,373 INFO L85 PathProgramCache]: Analyzing trace with hash 960170417, now seen corresponding path program 1 times [2022-11-19 07:49:05,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:49:05,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553772974] [2022-11-19 07:49:05,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:05,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:49:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 07:49:05,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:49:05,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553772974] [2022-11-19 07:49:05,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553772974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:49:05,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813851336] [2022-11-19 07:49:05,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:49:05,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:49:05,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:49:05,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:49:05,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:49:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:49:06,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:49:06,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:49:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 07:49:06,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:49:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 07:49:06,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813851336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:49:06,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1159588185] [2022-11-19 07:49:06,249 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2022-11-19 07:49:06,249 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:49:06,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:49:06,251 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:49:06,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:49:59,777 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 07:50:00,180 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 266 for LOIs [2022-11-19 07:50:02,725 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 07:50:03,090 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 268 for LOIs [2022-11-19 07:50:07,364 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 226 for LOIs [2022-11-19 07:50:07,418 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 234 for LOIs [2022-11-19 07:50:07,467 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-19 07:50:07,515 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2022-11-19 07:50:07,578 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:50:12,987 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 498 DAG size of output: 493 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:50:18,621 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 508 DAG size of output: 501 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:50:35,131 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 445 DAG size of output: 286 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:50:41,736 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 468 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:50:59,651 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 490 DAG size of output: 286 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:07,522 WARN L233 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 502 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:16,724 WARN L233 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 512 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:30,929 WARN L233 SmtUtils]: Spent 13.78s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:51:44,487 WARN L233 SmtUtils]: Spent 13.12s on a formula simplification. DAG size of input: 589 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:52:06,880 WARN L233 SmtUtils]: Spent 21.95s on a formula simplification. DAG size of input: 588 DAG size of output: 461 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:52:16,354 WARN L233 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 573 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:53:01,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1159588185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:01,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:53:01,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [4, 4, 4] total 50 [2022-11-19 07:53:01,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793016716] [2022-11-19 07:53:01,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:01,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-19 07:53:01,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:01,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-19 07:53:01,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2326, Unknown=0, NotChecked=0, Total=2450 [2022-11-19 07:53:01,910 INFO L87 Difference]: Start difference. First operand 427 states and 629 transitions. Second operand has 45 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 28 states have internal predecessors, (53), 14 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2022-11-19 07:53:37,162 WARN L233 SmtUtils]: Spent 22.17s on a formula simplification. DAG size of input: 543 DAG size of output: 448 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:00,594 WARN L233 SmtUtils]: Spent 22.65s on a formula simplification. DAG size of input: 591 DAG size of output: 440 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:33,101 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 419 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:47,514 WARN L233 SmtUtils]: Spent 13.11s on a formula simplification. DAG size of input: 599 DAG size of output: 432 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:55:15,385 WARN L233 SmtUtils]: Spent 21.90s on a formula simplification. DAG size of input: 590 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:56:03,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:56:03,017 INFO L93 Difference]: Finished difference Result 931 states and 1415 transitions. [2022-11-19 07:56:03,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-19 07:56:03,023 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 28 states have internal predecessors, (53), 14 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) Word has length 111 [2022-11-19 07:56:03,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:56:03,030 INFO L225 Difference]: With dead ends: 931 [2022-11-19 07:56:03,030 INFO L226 Difference]: Without dead ends: 567 [2022-11-19 07:56:03,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 319.4s TimeCoverageRelationStatistics Valid=255, Invalid=4301, Unknown=0, NotChecked=0, Total=4556 [2022-11-19 07:56:03,034 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 292 mSDsluCounter, 6310 mSDsCounter, 0 mSdLazyCounter, 7125 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 6587 SdHoareTripleChecker+Invalid, 7178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 7125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:56:03,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 6587 Invalid, 7178 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [53 Valid, 7125 Invalid, 0 Unknown, 0 Unchecked, 35.1s Time] [2022-11-19 07:56:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-19 07:56:03,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 466. [2022-11-19 07:56:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 304 states have (on average 1.4046052631578947) internal successors, (427), 310 states have internal predecessors, (427), 127 states have call successors, (127), 36 states have call predecessors, (127), 34 states have return successors, (126), 121 states have call predecessors, (126), 126 states have call successors, (126) [2022-11-19 07:56:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 680 transitions. [2022-11-19 07:56:03,284 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 680 transitions. Word has length 111 [2022-11-19 07:56:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:56:03,285 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 680 transitions. [2022-11-19 07:56:03,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 28 states have internal predecessors, (53), 14 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2022-11-19 07:56:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 680 transitions. [2022-11-19 07:56:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 07:56:03,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:56:03,289 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:56:03,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:56:03,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:56:03,497 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:56:03,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:56:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1065287996, now seen corresponding path program 1 times [2022-11-19 07:56:03,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:56:03,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387985619] [2022-11-19 07:56:03,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:56:03,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:56:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:56:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:56:03,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:56:03,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387985619] [2022-11-19 07:56:03,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387985619] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:56:03,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899058956] [2022-11-19 07:56:03,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:56:03,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:56:03,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:56:03,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:56:03,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26b8834a-275e-4bfa-9432-c0b271227620/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:56:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:56:04,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:56:04,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:56:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:56:04,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:56:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:56:04,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899058956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:56:04,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [476325889] [2022-11-19 07:56:04,162 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-11-19 07:56:04,162 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:56:04,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:56:04,164 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:56:04,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:56:47,422 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:56:47,733 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 266 for LOIs [2022-11-19 07:56:49,755 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-19 07:56:49,805 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 07:56:50,124 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 266 for LOIs [2022-11-19 07:56:53,353 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 276 for LOIs [2022-11-19 07:57:07,343 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 224 for LOIs [2022-11-19 07:57:07,388 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 246 for LOIs [2022-11-19 07:57:07,461 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2022-11-19 07:57:07,503 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-19 07:57:09,403 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 248 for LOIs [2022-11-19 07:57:09,449 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2022-11-19 07:57:09,496 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:57:23,688 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 444 DAG size of output: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:29,129 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:40,385 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 468 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:55,463 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 490 DAG size of output: 286 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:01,771 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 502 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:09,676 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 512 DAG size of output: 314 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:21,736 WARN L233 SmtUtils]: Spent 11.69s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:33,739 WARN L233 SmtUtils]: Spent 11.60s on a formula simplification. DAG size of input: 589 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:56,358 WARN L233 SmtUtils]: Spent 22.19s on a formula simplification. DAG size of input: 588 DAG size of output: 461 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:06,212 WARN L233 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 573 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:32,631 WARN L233 SmtUtils]: Spent 15.31s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)