./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI --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 76fb98768a82c6e881c4461160153969b956a6a73a8217d33a39b93921ba72b5 --- 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-5e519f3 [2022-11-03 01:41:52,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:41:52,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:41:52,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:41:52,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:41:52,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:41:52,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:41:52,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:41:52,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:41:52,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:41:52,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:41:52,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:41:52,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:41:52,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:41:52,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:41:52,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:41:52,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:41:52,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:41:52,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:41:52,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:41:52,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:41:52,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:41:52,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:41:52,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:41:52,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:41:52,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:41:52,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:41:52,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:41:52,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:41:52,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:41:52,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:41:52,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:41:52,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:41:52,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:41:52,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:41:52,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:41:52,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:41:52,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:41:52,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:41:52,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:41:52,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:41:52,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:41:52,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:41:52,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:41:52,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:41:52,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:41:52,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:41:52,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:41:52,475 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:41:52,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:41:52,476 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:41:52,476 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:41:52,477 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:41:52,477 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:41:52,492 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:41:52,492 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:41:52,493 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:41:52,493 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:41:52,493 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:41:52,494 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:41:52,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:41:52,495 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:41:52,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:41:52,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:41:52,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:41:52,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:41:52,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:41:52,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:41:52,496 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:41:52,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:41:52,496 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:41:52,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:41:52,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:41:52,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:41:52,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:41:52,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:41:52,497 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:41:52,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:41:52,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:41:52,498 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:41:52,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:41:52,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:41:52,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:41:52,499 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_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76fb98768a82c6e881c4461160153969b956a6a73a8217d33a39b93921ba72b5 [2022-11-03 01:41:52,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:41:52,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:41:52,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:41:52,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:41:52,872 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:41:52,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec1_product34.cil.c [2022-11-03 01:41:52,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/data/7dec69b2e/08f0490a7a9e4e3e8f12adae080c7100/FLAGdf88b5b2a [2022-11-03 01:41:53,571 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:41:53,572 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/sv-benchmarks/c/product-lines/email_spec1_product34.cil.c [2022-11-03 01:41:53,589 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/data/7dec69b2e/08f0490a7a9e4e3e8f12adae080c7100/FLAGdf88b5b2a [2022-11-03 01:41:53,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/data/7dec69b2e/08f0490a7a9e4e3e8f12adae080c7100 [2022-11-03 01:41:53,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:41:53,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:41:53,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:41:53,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:41:53,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:41:53,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:41:53" (1/1) ... [2022-11-03 01:41:53,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@604218d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:53, skipping insertion in model container [2022-11-03 01:41:53,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:41:53" (1/1) ... [2022-11-03 01:41:53,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:41:53,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:41:54,104 WARN L230 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_079de546-dee2-4204-ba71-beb7cbdab7d1/sv-benchmarks/c/product-lines/email_spec1_product34.cil.c[2480,2493] [2022-11-03 01:41:54,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:41:54,529 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:41:54,544 WARN L230 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_079de546-dee2-4204-ba71-beb7cbdab7d1/sv-benchmarks/c/product-lines/email_spec1_product34.cil.c[2480,2493] [2022-11-03 01:41:54,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:41:54,703 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:41:54,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54 WrapperNode [2022-11-03 01:41:54,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:41:54,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:41:54,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:41:54,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:41:54,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:54,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:54,859 INFO L138 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1096 [2022-11-03 01:41:54,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:41:54,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:41:54,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:41:54,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:41:54,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:54,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:54,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:54,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:54,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:54,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:54,999 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:55,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:55,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:41:55,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:41:55,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:41:55,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:41:55,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (1/1) ... [2022-11-03 01:41:55,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:41:55,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:41:55,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:41:55,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:41:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 01:41:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 01:41:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 01:41:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 01:41:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 01:41:55,127 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 01:41:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 01:41:55,127 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 01:41:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 01:41:55,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 01:41:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 01:41:55,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 01:41:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 01:41:55,128 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 01:41:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 01:41:55,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 01:41:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 01:41:55,128 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 01:41:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 01:41:55,128 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 01:41:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 01:41:55,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 01:41:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 01:41:55,129 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 01:41:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 01:41:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 01:41:55,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 01:41:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 01:41:55,130 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 01:41:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:41:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 01:41:55,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 01:41:55,130 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 01:41:55,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 01:41:55,131 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 01:41:55,131 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 01:41:55,131 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 01:41:55,131 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 01:41:55,131 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 01:41:55,131 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 01:41:55,132 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 01:41:55,132 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 01:41:55,132 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-03 01:41:55,132 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-03 01:41:55,133 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 01:41:55,133 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 01:41:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 01:41:55,134 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 01:41:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 01:41:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 01:41:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 01:41:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 01:41:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 01:41:55,136 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 01:41:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:41:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 01:41:55,136 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 01:41:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 01:41:55,136 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 01:41:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:41:55,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:41:55,374 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:41:55,377 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:41:56,560 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:41:57,264 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:41:57,264 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:41:57,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:41:57 BoogieIcfgContainer [2022-11-03 01:41:57,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:41:57,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:41:57,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:41:57,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:41:57,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:41:53" (1/3) ... [2022-11-03 01:41:57,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d17d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:41:57, skipping insertion in model container [2022-11-03 01:41:57,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:54" (2/3) ... [2022-11-03 01:41:57,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d17d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:41:57, skipping insertion in model container [2022-11-03 01:41:57,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:41:57" (3/3) ... [2022-11-03 01:41:57,280 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product34.cil.c [2022-11-03 01:41:57,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:41:57,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:41:57,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:41:57,403 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;@3f530d02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:41:57,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:41:57,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 135 states have internal predecessors, (168), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-03 01:41:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 01:41:57,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:57,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:57,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:57,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:57,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1302752910, now seen corresponding path program 1 times [2022-11-03 01:41:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:57,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017558445] [2022-11-03 01:41:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:41:57,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:57,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017558445] [2022-11-03 01:41:57,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017558445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:57,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:57,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:41:57,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228448761] [2022-11-03 01:41:57,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:57,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:41:57,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:58,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:41:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:41:58,014 INFO L87 Difference]: Start difference. First operand has 231 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 135 states have internal predecessors, (168), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 01:41:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:58,245 INFO L93 Difference]: Finished difference Result 370 states and 491 transitions. [2022-11-03 01:41:58,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:41:58,248 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-11-03 01:41:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:58,270 INFO L225 Difference]: With dead ends: 370 [2022-11-03 01:41:58,270 INFO L226 Difference]: Without dead ends: 228 [2022-11-03 01:41:58,276 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 [2022-11-03 01:41:58,283 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:58,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:41:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-03 01:41:58,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-11-03 01:41:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 128 states have (on average 1.265625) internal successors, (162), 132 states have internal predecessors, (162), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-03 01:41:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 303 transitions. [2022-11-03 01:41:58,355 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 303 transitions. Word has length 71 [2022-11-03 01:41:58,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:58,357 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 303 transitions. [2022-11-03 01:41:58,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 01:41:58,358 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 303 transitions. [2022-11-03 01:41:58,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 01:41:58,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:58,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:58,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:41:58,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:58,363 INFO L85 PathProgramCache]: Analyzing trace with hash -820717606, now seen corresponding path program 1 times [2022-11-03 01:41:58,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:58,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892641682] [2022-11-03 01:41:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:58,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:58,647 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:41:58,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:58,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892641682] [2022-11-03 01:41:58,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892641682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:58,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:58,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:41:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474458700] [2022-11-03 01:41:58,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:58,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:41:58,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:58,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:41:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:58,652 INFO L87 Difference]: Start difference. First operand 228 states and 303 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 01:41:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:58,805 INFO L93 Difference]: Finished difference Result 366 states and 476 transitions. [2022-11-03 01:41:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:58,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-11-03 01:41:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:58,813 INFO L225 Difference]: With dead ends: 366 [2022-11-03 01:41:58,813 INFO L226 Difference]: Without dead ends: 230 [2022-11-03 01:41:58,819 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 [2022-11-03 01:41:58,820 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:58,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:41:58,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-03 01:41:58,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-03 01:41:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 134 states have internal predecessors, (164), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-03 01:41:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 305 transitions. [2022-11-03 01:41:58,863 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 305 transitions. Word has length 72 [2022-11-03 01:41:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:58,867 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 305 transitions. [2022-11-03 01:41:58,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 01:41:58,868 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 305 transitions. [2022-11-03 01:41:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 01:41:58,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:58,878 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:58,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:41:58,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:58,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:58,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1992996637, now seen corresponding path program 1 times [2022-11-03 01:41:58,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:58,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61166683] [2022-11-03 01:41:58,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:58,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:41:59,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:59,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61166683] [2022-11-03 01:41:59,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61166683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:59,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:59,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:41:59,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533629068] [2022-11-03 01:41:59,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:59,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:41:59,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:59,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:41:59,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:59,071 INFO L87 Difference]: Start difference. First operand 230 states and 305 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 01:41:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:59,265 INFO L93 Difference]: Finished difference Result 495 states and 677 transitions. [2022-11-03 01:41:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:59,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-03 01:41:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:59,270 INFO L225 Difference]: With dead ends: 495 [2022-11-03 01:41:59,270 INFO L226 Difference]: Without dead ends: 283 [2022-11-03 01:41:59,273 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 [2022-11-03 01:41:59,279 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 59 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:59,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 538 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:41:59,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-03 01:41:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 278. [2022-11-03 01:41:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 164 states have (on average 1.3353658536585367) internal successors, (219), 168 states have internal predecessors, (219), 85 states have call successors, (85), 28 states have call predecessors, (85), 28 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2022-11-03 01:41:59,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 388 transitions. [2022-11-03 01:41:59,316 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 388 transitions. Word has length 77 [2022-11-03 01:41:59,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:59,316 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 388 transitions. [2022-11-03 01:41:59,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 01:41:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 388 transitions. [2022-11-03 01:41:59,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 01:41:59,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:59,319 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:59,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:41:59,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:59,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:59,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1416426932, now seen corresponding path program 1 times [2022-11-03 01:41:59,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:59,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250698577] [2022-11-03 01:41:59,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:59,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:41:59,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:59,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250698577] [2022-11-03 01:41:59,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250698577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:41:59,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083046576] [2022-11-03 01:41:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:59,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:59,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:41:59,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:41:59,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:41:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:59,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:41:59,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:42:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:42:00,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:42:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:42:00,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083046576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:42:00,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1951715400] [2022-11-03 01:42:00,171 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-03 01:42:00,177 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:42:00,183 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:42:00,189 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:42:00,189 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:42:32,732 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 01:42:33,110 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 270 for LOIs [2022-11-03 01:42:35,145 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-11-03 01:42:35,190 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 447 for LOIs [2022-11-03 01:42:35,600 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 272 for LOIs [2022-11-03 01:42:39,040 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 228 for LOIs [2022-11-03 01:42:39,098 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 280 for LOIs [2022-11-03 01:42:46,055 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 250 for LOIs [2022-11-03 01:42:46,125 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-03 01:42:46,167 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-11-03 01:42:49,590 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 255 for LOIs [2022-11-03 01:42:49,649 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:43:19,628 WARN L234 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 468 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:43:46,400 WARN L234 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 512 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:44:04,162 WARN L234 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 480 DAG size of output: 280 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:44:58,151 WARN L234 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 487 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:45:06,180 WARN L234 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 529 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:45:10,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1951715400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:10,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:45:10,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-11-03 01:45:10,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934487916] [2022-11-03 01:45:10,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:10,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-03 01:45:10,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:10,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-03 01:45:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3262, Unknown=0, NotChecked=0, Total=3422 [2022-11-03 01:45:10,021 INFO L87 Difference]: Start difference. First operand 278 states and 388 transitions. Second operand has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 01:45:54,801 WARN L234 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 460 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:46:13,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:13,106 INFO L93 Difference]: Finished difference Result 642 states and 928 transitions. [2022-11-03 01:46:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-03 01:46:13,107 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 78 [2022-11-03 01:46:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:13,111 INFO L225 Difference]: With dead ends: 642 [2022-11-03 01:46:13,111 INFO L226 Difference]: Without dead ends: 382 [2022-11-03 01:46:13,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 167.0s TimeCoverageRelationStatistics Valid=210, Invalid=4212, Unknown=0, NotChecked=0, Total=4422 [2022-11-03 01:46:13,116 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 120 mSDsluCounter, 7530 mSDsCounter, 0 mSdLazyCounter, 8483 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 7544 SdHoareTripleChecker+Invalid, 8515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 8483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:13,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 7544 Invalid, 8515 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [32 Valid, 8483 Invalid, 0 Unknown, 0 Unchecked, 35.6s Time] [2022-11-03 01:46:13,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-03 01:46:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 340. [2022-11-03 01:46:13,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 209 states have (on average 1.325358851674641) internal successors, (277), 213 states have internal predecessors, (277), 95 states have call successors, (95), 38 states have call predecessors, (95), 35 states have return successors, (94), 90 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-03 01:46:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 466 transitions. [2022-11-03 01:46:13,275 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 466 transitions. Word has length 78 [2022-11-03 01:46:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:13,276 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 466 transitions. [2022-11-03 01:46:13,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 01:46:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 466 transitions. [2022-11-03 01:46:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 01:46:13,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:13,279 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:13,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:46:13,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:46:13,495 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:13,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash -380249906, now seen corresponding path program 1 times [2022-11-03 01:46:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:13,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241050789] [2022-11-03 01:46:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:46:13,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:13,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241050789] [2022-11-03 01:46:13,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241050789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:13,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:13,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:13,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870720242] [2022-11-03 01:46:13,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:13,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:13,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:13,662 INFO L87 Difference]: Start difference. First operand 340 states and 466 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:46:14,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:14,023 INFO L93 Difference]: Finished difference Result 782 states and 1112 transitions. [2022-11-03 01:46:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:14,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-03 01:46:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:14,028 INFO L225 Difference]: With dead ends: 782 [2022-11-03 01:46:14,028 INFO L226 Difference]: Without dead ends: 468 [2022-11-03 01:46:14,030 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 [2022-11-03 01:46:14,031 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 57 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:14,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 545 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:46:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-03 01:46:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 461. [2022-11-03 01:46:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 299 states have (on average 1.394648829431438) internal successors, (417), 303 states have internal predecessors, (417), 126 states have call successors, (126), 38 states have call predecessors, (126), 35 states have return successors, (125), 121 states have call predecessors, (125), 125 states have call successors, (125) [2022-11-03 01:46:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 668 transitions. [2022-11-03 01:46:14,221 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 668 transitions. Word has length 83 [2022-11-03 01:46:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:14,222 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 668 transitions. [2022-11-03 01:46:14,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:46:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 668 transitions. [2022-11-03 01:46:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 01:46:14,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:14,225 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:14,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:46:14,226 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:46:14,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash -16394758, now seen corresponding path program 1 times [2022-11-03 01:46:14,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:14,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946470139] [2022-11-03 01:46:14,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:46:14,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:14,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946470139] [2022-11-03 01:46:14,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946470139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:46:14,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131204184] [2022-11-03 01:46:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:14,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:46:14,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:46:14,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:46:14,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:46:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:14,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:46:14,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:46:14,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:46:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:46:14,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131204184] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:46:14,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [612925364] [2022-11-03 01:46:14,978 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-03 01:46:14,980 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:46:14,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:46:14,982 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:46:14,982 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:46:53,870 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-03 01:46:54,161 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 266 for LOIs [2022-11-03 01:46:56,154 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-03 01:46:56,192 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-03 01:46:56,478 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 266 for LOIs [2022-11-03 01:46:59,516 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 224 for LOIs [2022-11-03 01:46:59,551 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 276 for LOIs [2022-11-03 01:47:05,801 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 246 for LOIs [2022-11-03 01:47:05,873 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-11-03 01:47:05,915 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-03 01:47:07,968 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2022-11-03 01:47:08,021 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:47:38,786 WARN L234 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 468 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:05,726 WARN L234 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 512 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:28,864 WARN L234 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 476 DAG size of output: 276 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:23,387 WARN L234 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 483 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:31,422 WARN L234 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 525 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:35,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [612925364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:35,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:49:35,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2022-11-03 01:49:35,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179640565] [2022-11-03 01:49:35,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:35,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-03 01:49:35,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:35,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-03 01:49:35,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3718, Unknown=0, NotChecked=0, Total=3906 [2022-11-03 01:49:35,284 INFO L87 Difference]: Start difference. First operand 461 states and 668 transitions. Second operand has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 01:51:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:12,498 INFO L93 Difference]: Finished difference Result 973 states and 1460 transitions. [2022-11-03 01:51:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-03 01:51:12,511 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 84 [2022-11-03 01:51:12,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:12,519 INFO L225 Difference]: With dead ends: 973 [2022-11-03 01:51:12,519 INFO L226 Difference]: Without dead ends: 613 [2022-11-03 01:51:12,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 210.1s TimeCoverageRelationStatistics Valid=327, Invalid=5835, Unknown=0, NotChecked=0, Total=6162 [2022-11-03 01:51:12,525 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 337 mSDsluCounter, 6538 mSDsCounter, 0 mSdLazyCounter, 8370 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 6560 SdHoareTripleChecker+Invalid, 8428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 8370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:12,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 6560 Invalid, 8428 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [58 Valid, 8370 Invalid, 0 Unknown, 0 Unchecked, 33.5s Time] [2022-11-03 01:51:12,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-03 01:51:12,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 477. [2022-11-03 01:51:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 311 states have (on average 1.3987138263665595) internal successors, (435), 317 states have internal predecessors, (435), 129 states have call successors, (129), 39 states have call predecessors, (129), 36 states have return successors, (128), 122 states have call predecessors, (128), 128 states have call successors, (128) [2022-11-03 01:51:12,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 692 transitions. [2022-11-03 01:51:12,811 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 692 transitions. Word has length 84 [2022-11-03 01:51:12,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:12,811 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 692 transitions. [2022-11-03 01:51:12,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 35 states have internal predecessors, (44), 18 states have call successors, (18), 12 states have call predecessors, (18), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 01:51:12,812 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 692 transitions. [2022-11-03 01:51:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 01:51:12,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:12,814 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:12,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 01:51:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:13,039 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1972098494, now seen corresponding path program 1 times [2022-11-03 01:51:13,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249259321] [2022-11-03 01:51:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:13,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:51:13,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:13,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249259321] [2022-11-03 01:51:13,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249259321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:13,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143117783] [2022-11-03 01:51:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:13,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:13,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:13,262 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:13,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:51:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:13,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:51:13,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:51:13,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:51:13,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143117783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:13,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [537451448] [2022-11-03 01:51:13,723 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-03 01:51:13,723 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:51:13,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:51:13,724 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:51:13,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:29,595 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 01:52:29,887 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-03 01:52:29,947 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 235 for LOIs [2022-11-03 01:52:30,008 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 222 for LOIs [2022-11-03 01:52:30,088 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 447 for LOIs [2022-11-03 01:52:30,373 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:59,777 WARN L234 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 468 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:27,023 WARN L234 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 512 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:46,945 WARN L234 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 526 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:46,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [537451448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:46,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:53:46,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-03 01:53:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390288555] [2022-11-03 01:53:46,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:46,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 01:53:46,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:46,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 01:53:46,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 01:53:46,950 INFO L87 Difference]: Start difference. First operand 477 states and 692 transitions. Second operand has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-03 01:54:30,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:30,809 INFO L93 Difference]: Finished difference Result 973 states and 1466 transitions. [2022-11-03 01:54:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 01:54:30,810 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 87 [2022-11-03 01:54:30,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:30,814 INFO L225 Difference]: With dead ends: 973 [2022-11-03 01:54:30,814 INFO L226 Difference]: Without dead ends: 613 [2022-11-03 01:54:30,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 104.5s TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 01:54:30,817 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 201 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 3694 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:30,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 3793 Invalid, 3720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 3694 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-11-03 01:54:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-03 01:54:31,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 531. [2022-11-03 01:54:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 358 states have (on average 1.4022346368715084) internal successors, (502), 365 states have internal predecessors, (502), 133 states have call successors, (133), 42 states have call predecessors, (133), 39 states have return successors, (132), 125 states have call predecessors, (132), 132 states have call successors, (132) [2022-11-03 01:54:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 767 transitions. [2022-11-03 01:54:31,146 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 767 transitions. Word has length 87 [2022-11-03 01:54:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:31,147 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 767 transitions. [2022-11-03 01:54:31,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-03 01:54:31,147 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 767 transitions. [2022-11-03 01:54:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:54:31,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:31,150 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:31,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 01:54:31,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:31,363 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:31,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash 180618624, now seen corresponding path program 1 times [2022-11-03 01:54:31,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:31,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190396263] [2022-11-03 01:54:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:54:31,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:31,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190396263] [2022-11-03 01:54:31,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190396263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:31,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465021583] [2022-11-03 01:54:31,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:31,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:31,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:54:31,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:54:31,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079de546-dee2-4204-ba71-beb7cbdab7d1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:54:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:31,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:54:31,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:54:31,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:54:31,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465021583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:54:31,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [316933900] [2022-11-03 01:54:31,963 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-03 01:54:31,963 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:54:31,964 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:54:31,964 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:54:31,964 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs