./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf397912a53dab4d44f4df9c274fc7c69b1023a0a0a29a356bc73a744537daa6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:35:55,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:35:55,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:35:55,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:35:55,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:35:55,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:35:55,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:35:55,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:35:55,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:35:55,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:35:55,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:35:55,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:35:55,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:35:55,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:35:55,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:35:55,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:35:55,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:35:55,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:35:55,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:35:55,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:35:55,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:35:55,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:35:55,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:35:55,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:35:55,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:35:55,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:35:55,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:35:55,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:35:55,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:35:55,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:35:55,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:35:55,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:35:55,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:35:55,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:35:55,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:35:55,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:35:55,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:35:55,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:35:55,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:35:55,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:35:55,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:35:55,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:35:55,267 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:35:55,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:35:55,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:35:55,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:35:55,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:35:55,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:35:55,272 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:35:55,272 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:35:55,272 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:35:55,272 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:35:55,272 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:35:55,272 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:35:55,272 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:35:55,272 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:35:55,272 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:35:55,273 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:35:55,273 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:35:55,273 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:35:55,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:35:55,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:35:55,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:35:55,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:35:55,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:35:55,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:35:55,275 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:35:55,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:35:55,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:35:55,275 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:35:55,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:35:55,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:35:55,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:35:55,276 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_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf397912a53dab4d44f4df9c274fc7c69b1023a0a0a29a356bc73a744537daa6 [2022-12-14 05:35:55,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:35:55,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:35:55,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:35:55,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:35:55,464 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:35:55,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c [2022-12-14 05:35:58,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:35:58,249 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:35:58,249 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c [2022-12-14 05:35:58,263 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/data/85db712ac/7d115392d0b74e06b956d55e3db2ce6d/FLAGa88040f03 [2022-12-14 05:35:58,602 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/data/85db712ac/7d115392d0b74e06b956d55e3db2ce6d [2022-12-14 05:35:58,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:35:58,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:35:58,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:35:58,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:35:58,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:35:58,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:35:58" (1/1) ... [2022-12-14 05:35:58,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b277d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:58, skipping insertion in model container [2022-12-14 05:35:58,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:35:58" (1/1) ... [2022-12-14 05:35:58,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:35:58,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:35:58,867 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:58,876 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:58,877 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:58,882 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:58,902 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:58,904 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:58,908 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c[18883,18896] [2022-12-14 05:35:59,010 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,010 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,012 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,051 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:35:59,060 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:35:59,074 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,076 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,076 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,077 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,082 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,083 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,085 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c[18883,18896] [2022-12-14 05:35:59,111 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,112 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,114 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,131 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 05:35:59,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:35:59,153 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:35:59,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59 WrapperNode [2022-12-14 05:35:59,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:35:59,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:35:59,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:35:59,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:35:59,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,217 INFO L138 Inliner]: procedures = 151, calls = 283, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1312 [2022-12-14 05:35:59,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:35:59,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:35:59,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:35:59,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:35:59,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,257 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:35:59,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:35:59,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:35:59,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:35:59,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (1/1) ... [2022-12-14 05:35:59,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:35:59,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:35:59,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:35:59,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:35:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 05:35:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 05:35:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-12-14 05:35:59,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-12-14 05:35:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-12-14 05:35:59,344 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-12-14 05:35:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 05:35:59,344 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 05:35:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 05:35:59,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 05:35:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 05:35:59,345 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 05:35:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 05:35:59,345 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 05:35:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-12-14 05:35:59,345 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-12-14 05:35:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 05:35:59,345 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 05:35:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-12-14 05:35:59,345 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-12-14 05:35:59,345 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 05:35:59,346 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 05:35:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 05:35:59,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 05:35:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 05:35:59,346 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 05:35:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-12-14 05:35:59,346 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-12-14 05:35:59,346 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-12-14 05:35:59,346 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-12-14 05:35:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 05:35:59,347 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 05:35:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 05:35:59,347 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 05:35:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 05:35:59,347 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 05:35:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 05:35:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-12-14 05:35:59,347 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-12-14 05:35:59,347 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 05:35:59,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 05:35:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 05:35:59,348 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 05:35:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 05:35:59,348 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 05:35:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-12-14 05:35:59,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-12-14 05:35:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:35:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 05:35:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 05:35:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 05:35:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 05:35:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-12-14 05:35:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-12-14 05:35:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-12-14 05:35:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-12-14 05:35:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-12-14 05:35:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-12-14 05:35:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 05:35:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 05:35:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 05:35:59,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 05:35:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 05:35:59,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 05:35:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 05:35:59,350 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 05:35:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 05:35:59,350 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 05:35:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 05:35:59,350 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 05:35:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 05:35:59,350 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 05:35:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-12-14 05:35:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-12-14 05:35:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-12-14 05:35:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-12-14 05:35:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 05:35:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 05:35:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 05:35:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 05:35:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:35:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 05:35:59,351 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 05:35:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-12-14 05:35:59,352 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-12-14 05:35:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-12-14 05:35:59,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-12-14 05:35:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 05:35:59,352 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 05:35:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:35:59,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:35:59,529 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:35:59,531 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:36:00,207 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:36:00,612 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:36:00,613 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:36:00,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:36:00 BoogieIcfgContainer [2022-12-14 05:36:00,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:36:00,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:36:00,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:36:00,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:36:00,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:35:58" (1/3) ... [2022-12-14 05:36:00,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1b1532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:36:00, skipping insertion in model container [2022-12-14 05:36:00,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:35:59" (2/3) ... [2022-12-14 05:36:00,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1b1532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:36:00, skipping insertion in model container [2022-12-14 05:36:00,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:36:00" (3/3) ... [2022-12-14 05:36:00,624 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_productSimulator.cil.c [2022-12-14 05:36:00,644 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:36:00,644 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:36:00,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:36:00,707 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;@f42df88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:36:00,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:36:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2022-12-14 05:36:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-14 05:36:00,729 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:36:00,730 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:36:00,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:36:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:36:00,735 INFO L85 PathProgramCache]: Analyzing trace with hash -828697015, now seen corresponding path program 1 times [2022-12-14 05:36:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:36:00,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144730753] [2022-12-14 05:36:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:00,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:36:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 05:36:01,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:36:01,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144730753] [2022-12-14 05:36:01,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144730753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:36:01,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:36:01,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:36:01,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575749204] [2022-12-14 05:36:01,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:36:01,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:36:01,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:36:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:36:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:36:01,231 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 05:36:01,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:36:01,477 INFO L93 Difference]: Finished difference Result 732 states and 1002 transitions. [2022-12-14 05:36:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:36:01,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2022-12-14 05:36:01,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:36:01,492 INFO L225 Difference]: With dead ends: 732 [2022-12-14 05:36:01,492 INFO L226 Difference]: Without dead ends: 377 [2022-12-14 05:36:01,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:36:01,501 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 6 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:36:01,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1386 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:36:01,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-12-14 05:36:01,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-12-14 05:36:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.2914798206278026) internal successors, (288), 242 states have internal predecessors, (288), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-12-14 05:36:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2022-12-14 05:36:01,552 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 101 [2022-12-14 05:36:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:36:01,553 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2022-12-14 05:36:01,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 05:36:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2022-12-14 05:36:01,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-14 05:36:01,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:36:01,556 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:36:01,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:36:01,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:36:01,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:36:01,557 INFO L85 PathProgramCache]: Analyzing trace with hash 305761389, now seen corresponding path program 1 times [2022-12-14 05:36:01,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:36:01,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275737103] [2022-12-14 05:36:01,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:01,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:36:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 05:36:01,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:36:01,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275737103] [2022-12-14 05:36:01,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275737103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:36:01,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:36:01,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:36:01,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541394029] [2022-12-14 05:36:01,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:36:01,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:36:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:36:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:36:01,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:36:01,674 INFO L87 Difference]: Start difference. First operand 377 states and 507 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-14 05:36:01,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:36:01,807 INFO L93 Difference]: Finished difference Result 727 states and 988 transitions. [2022-12-14 05:36:01,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:36:01,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 107 [2022-12-14 05:36:01,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:36:01,810 INFO L225 Difference]: With dead ends: 727 [2022-12-14 05:36:01,810 INFO L226 Difference]: Without dead ends: 377 [2022-12-14 05:36:01,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:36:01,812 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 474 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:36:01,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 457 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:36:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-12-14 05:36:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-12-14 05:36:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 224 states have (on average 1.2723214285714286) internal successors, (285), 241 states have internal predecessors, (285), 108 states have call successors, (108), 44 states have call predecessors, (108), 44 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2022-12-14 05:36:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 500 transitions. [2022-12-14 05:36:01,840 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 500 transitions. Word has length 107 [2022-12-14 05:36:01,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:36:01,840 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 500 transitions. [2022-12-14 05:36:01,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-14 05:36:01,840 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 500 transitions. [2022-12-14 05:36:01,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 05:36:01,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:36:01,843 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:36:01,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:36:01,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:36:01,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:36:01,844 INFO L85 PathProgramCache]: Analyzing trace with hash 73195237, now seen corresponding path program 1 times [2022-12-14 05:36:01,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:36:01,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607450406] [2022-12-14 05:36:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:01,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:36:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:01,924 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 05:36:01,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:36:01,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607450406] [2022-12-14 05:36:01,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607450406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:36:01,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:36:01,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:36:01,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534849321] [2022-12-14 05:36:01,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:36:01,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:36:01,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:36:01,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:36:01,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:36:01,926 INFO L87 Difference]: Start difference. First operand 377 states and 500 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 05:36:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:36:02,029 INFO L93 Difference]: Finished difference Result 721 states and 967 transitions. [2022-12-14 05:36:02,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:36:02,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 113 [2022-12-14 05:36:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:36:02,031 INFO L225 Difference]: With dead ends: 721 [2022-12-14 05:36:02,031 INFO L226 Difference]: Without dead ends: 375 [2022-12-14 05:36:02,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:36:02,034 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 455 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:36:02,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 470 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:36:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-12-14 05:36:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2022-12-14 05:36:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 224 states have (on average 1.2589285714285714) internal successors, (282), 239 states have internal predecessors, (282), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2022-12-14 05:36:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 493 transitions. [2022-12-14 05:36:02,066 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 493 transitions. Word has length 113 [2022-12-14 05:36:02,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:36:02,066 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 493 transitions. [2022-12-14 05:36:02,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 05:36:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 493 transitions. [2022-12-14 05:36:02,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 05:36:02,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:36:02,069 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:36:02,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:36:02,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:36:02,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:36:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1233601906, now seen corresponding path program 1 times [2022-12-14 05:36:02,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:36:02,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191755560] [2022-12-14 05:36:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:02,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:36:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 05:36:02,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:36:02,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191755560] [2022-12-14 05:36:02,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191755560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:36:02,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:36:02,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:36:02,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495309992] [2022-12-14 05:36:02,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:36:02,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:36:02,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:36:02,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:36:02,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:36:02,156 INFO L87 Difference]: Start difference. First operand 375 states and 493 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 05:36:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:36:02,275 INFO L93 Difference]: Finished difference Result 713 states and 934 transitions. [2022-12-14 05:36:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:36:02,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 114 [2022-12-14 05:36:02,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:36:02,279 INFO L225 Difference]: With dead ends: 713 [2022-12-14 05:36:02,279 INFO L226 Difference]: Without dead ends: 378 [2022-12-14 05:36:02,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:36:02,281 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 436 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:36:02,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 453 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:36:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-12-14 05:36:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 372. [2022-12-14 05:36:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 224 states have (on average 1.2098214285714286) internal successors, (271), 234 states have internal predecessors, (271), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2022-12-14 05:36:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 476 transitions. [2022-12-14 05:36:02,299 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 476 transitions. Word has length 114 [2022-12-14 05:36:02,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:36:02,299 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 476 transitions. [2022-12-14 05:36:02,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 05:36:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 476 transitions. [2022-12-14 05:36:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-12-14 05:36:02,301 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:36:02,301 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:36:02,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:36:02,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:36:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:36:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1265043618, now seen corresponding path program 1 times [2022-12-14 05:36:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:36:02,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772154578] [2022-12-14 05:36:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:36:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:36:02,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:36:02,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772154578] [2022-12-14 05:36:02,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772154578] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:36:02,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:36:02,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:36:02,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441191833] [2022-12-14 05:36:02,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:36:02,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:36:02,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:36:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:36:02,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:36:02,386 INFO L87 Difference]: Start difference. First operand 372 states and 476 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:36:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:36:02,502 INFO L93 Difference]: Finished difference Result 589 states and 747 transitions. [2022-12-14 05:36:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:36:02,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 126 [2022-12-14 05:36:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:36:02,505 INFO L225 Difference]: With dead ends: 589 [2022-12-14 05:36:02,505 INFO L226 Difference]: Without dead ends: 374 [2022-12-14 05:36:02,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:36:02,507 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 0 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:36:02,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 847 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:36:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-12-14 05:36:02,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-12-14 05:36:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 226 states have (on average 1.2079646017699115) internal successors, (273), 236 states have internal predecessors, (273), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2022-12-14 05:36:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 478 transitions. [2022-12-14 05:36:02,532 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 478 transitions. Word has length 126 [2022-12-14 05:36:02,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:36:02,532 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 478 transitions. [2022-12-14 05:36:02,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:36:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 478 transitions. [2022-12-14 05:36:02,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-14 05:36:02,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:36:02,535 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:36:02,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:36:02,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:36:02,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:36:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1471910884, now seen corresponding path program 1 times [2022-12-14 05:36:02,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:36:02,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460551467] [2022-12-14 05:36:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:02,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:36:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:36:02,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:36:02,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460551467] [2022-12-14 05:36:02,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460551467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:36:02,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:36:02,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:36:02,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920139568] [2022-12-14 05:36:02,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:36:02,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:36:02,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:36:02,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:36:02,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:36:02,607 INFO L87 Difference]: Start difference. First operand 374 states and 478 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:36:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:36:02,735 INFO L93 Difference]: Finished difference Result 748 states and 980 transitions. [2022-12-14 05:36:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:36:02,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 131 [2022-12-14 05:36:02,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:36:02,738 INFO L225 Difference]: With dead ends: 748 [2022-12-14 05:36:02,738 INFO L226 Difference]: Without dead ends: 441 [2022-12-14 05:36:02,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:36:02,740 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 76 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:36:02,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 858 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:36:02,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-12-14 05:36:02,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 436. [2022-12-14 05:36:02,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 274 states have (on average 1.2518248175182483) internal successors, (343), 284 states have internal predecessors, (343), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116) [2022-12-14 05:36:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 576 transitions. [2022-12-14 05:36:02,768 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 576 transitions. Word has length 131 [2022-12-14 05:36:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:36:02,769 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 576 transitions. [2022-12-14 05:36:02,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:36:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 576 transitions. [2022-12-14 05:36:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-14 05:36:02,770 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:36:02,770 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:36:02,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 05:36:02,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:36:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:36:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash 780154006, now seen corresponding path program 1 times [2022-12-14 05:36:02,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:36:02,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787362079] [2022-12-14 05:36:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:02,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:36:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:36:02,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:36:02,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787362079] [2022-12-14 05:36:02,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787362079] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:36:02,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938475823] [2022-12-14 05:36:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:02,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:36:02,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:36:02,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:36:02,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:36:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:03,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:36:03,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:36:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:36:03,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:36:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:36:03,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938475823] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:36:03,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1899218980] [2022-12-14 05:36:03,327 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-12-14 05:36:03,327 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:36:03,330 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:36:03,334 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:36:03,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:37:37,157 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2022-12-14 05:37:38,318 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2022-12-14 05:37:39,848 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 275 for LOIs [2022-12-14 05:37:41,755 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 725 for LOIs [2022-12-14 05:37:42,616 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-12-14 05:37:43,431 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2022-12-14 05:37:43,728 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 245 for LOIs [2022-12-14 05:37:43,773 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-12-14 05:37:44,078 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 277 for LOIs [2022-12-14 05:37:45,481 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2022-12-14 05:37:45,666 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 289 for LOIs [2022-12-14 05:37:45,845 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 289 for LOIs [2022-12-14 05:37:51,084 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 445 for LOIs [2022-12-14 05:37:51,708 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 442 for LOIs [2022-12-14 05:37:52,335 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 255 for LOIs [2022-12-14 05:37:52,382 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:38:53,156 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 732 DAG size of output: 575 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:39:02,908 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 721 DAG size of output: 515 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:39:11,071 WARN L233 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 727 DAG size of output: 610 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:39:17,558 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 731 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:40:39,679 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11440#(and (<= |outgoing__before__Encrypt_getClientId_#in~handle#1| 1) (= ~__ste_Client_Keyring1_User2~0 0) (<= ~__SELECTED_FEATURE_Keys~0 2147483647) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= ~__SELECTED_FEATURE_Base~0 2147483647) (<= |outgoing__before__Encrypt_mail_#in~msg#1| 1) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing__before__Encrypt_mail_#in~client#1| 1) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= 0 (+ |outgoing__before__Encrypt_getClientId_~retValue_acc~22#1| 2147483648)) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (<= 0 (+ ~__SELECTED_FEATURE_Keys~0 2147483648)) (<= |outgoing__before__Encrypt_~client#1| 1) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= |outgoing__before__Encrypt_mail_~client#1| 1) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (<= 1 |outgoing__before__Encrypt_mail_#in~client#1|) (<= |old(~queued_client~0)| 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 1 |outgoing__before__Encrypt_getClientId_~handle#1|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_#in~client#1| 1) (= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~tmp~27#1| ~__ste_client_privateKey0~0) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (<= 1 |outgoing__before__Encrypt_mail_#in~msg#1|) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= |outgoing__before__Encrypt_mail_~__utac__ad__arg2~0#1| 1) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (<= 1 |outgoing__before__Encrypt_~msg#1|) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= |outgoing__before__Encrypt_#in~msg#1| 1) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (<= 1 |outgoing__before__Encrypt_mail_~__utac__ad__arg2~0#1|) (not (= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~10#1| 0)) (<= 1 |outgoing__before__Encrypt_#in~msg#1|) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= 0 (+ ~__SELECTED_FEATURE_Base~0 2147483648)) (= ~__SELECTED_FEATURE_Sign~0 1) (<= 1 |outgoing__before__Encrypt_#in~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= 1 |outgoing__before__Encrypt_mail_~client#1|) (<= |outgoing__before__Encrypt_~msg#1| 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~client#1| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |outgoing__before__Encrypt_~tmp~2#1| 2147483647) (<= |outgoing__before__Encrypt_#in~client#1| 1) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= 1 |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~msg#1|) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_#in~msg#1| 1) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 1 |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_email_isEncrypted1~0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~tmp~27#1| 0) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 1 |outgoing__before__Encrypt_getClientId_#in~handle#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing__before__Encrypt_mail_~msg#1|) (= ~__ste_Client_Keyring2_User1~0 0) (<= 1 |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_#in~msg#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (= ~__GUIDSL_ROOT_PRODUCTION~0 1) (<= ~__ste_email_signKey1~0 0) (<= 0 |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~10#1|) (<= ~__ste_email_isSigned1~0 0) (= ~bob~0 1) (<= |outgoing__before__Encrypt_getClientId_~handle#1| 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 1 |outgoing__before__Encrypt_~client#1|) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= ~__SELECTED_FEATURE_AutoResponder~0 2147483647) (= ~__ste_client_outbuffer0~0 0) (<= 0 (+ ~__SELECTED_FEATURE_AutoResponder~0 2147483648)) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~10#1| 1) (<= 1 |outgoing__before__Encrypt_mail_~__utac__ad__arg1~0#1|) (<= 0 (+ |outgoing__before__Encrypt_~tmp~2#1| 2147483648)) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (<= |outgoing__before__Encrypt_mail_~msg#1| 1) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing__before__Encrypt_mail_~__utac__ad__arg1~0#1| 1) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 0 (+ 2147483648 |outgoing__before__Encrypt_getClientId_#res#1|)) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= ~__SELECTED_FEATURE_Forward~0 2147483647) (<= |outgoing__before__Encrypt_getClientId_#res#1| 2147483647) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (<= |outgoing__before__Encrypt_getClientId_~retValue_acc~22#1| 2147483647) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 (+ ~__SELECTED_FEATURE_Forward~0 2147483648)) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= 1 |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_#in~client#1|) (<= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~msg#1| 1) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= ~__SELECTED_FEATURE_Verify~0 2147483647) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (<= 0 (+ ~__SELECTED_FEATURE_Verify~0 2147483648)) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2022-12-14 05:40:39,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:40:39,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:40:39,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 05:40:39,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113877151] [2022-12-14 05:40:39,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:40:39,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:40:39,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:40:39,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=8408, Unknown=0, NotChecked=0, Total=8742 [2022-12-14 05:40:39,683 INFO L87 Difference]: Start difference. First operand 436 states and 576 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-14 05:40:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:39,963 INFO L93 Difference]: Finished difference Result 1002 states and 1393 transitions. [2022-12-14 05:40:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:40:39,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 132 [2022-12-14 05:40:39,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:39,967 INFO L225 Difference]: With dead ends: 1002 [2022-12-14 05:40:39,967 INFO L226 Difference]: Without dead ends: 787 [2022-12-14 05:40:39,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 302 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3579 ImplicationChecksByTransitivity, 167.2s TimeCoverageRelationStatistics Valid=334, Invalid=8408, Unknown=0, NotChecked=0, Total=8742 [2022-12-14 05:40:39,970 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 399 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:39,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1606 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:40:39,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-12-14 05:40:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 772. [2022-12-14 05:40:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 531 states have (on average 1.3370998116760828) internal successors, (710), 541 states have internal predecessors, (710), 196 states have call successors, (196), 44 states have call predecessors, (196), 44 states have return successors, (195), 194 states have call predecessors, (195), 195 states have call successors, (195) [2022-12-14 05:40:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1101 transitions. [2022-12-14 05:40:40,001 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1101 transitions. Word has length 132 [2022-12-14 05:40:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:40,002 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1101 transitions. [2022-12-14 05:40:40,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-12-14 05:40:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1101 transitions. [2022-12-14 05:40:40,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-14 05:40:40,004 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:40,004 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:40,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:40:40,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:40:40,205 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:40,205 INFO L85 PathProgramCache]: Analyzing trace with hash 452099019, now seen corresponding path program 1 times [2022-12-14 05:40:40,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:40,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465748231] [2022-12-14 05:40:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:40,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:40:40,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:40,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465748231] [2022-12-14 05:40:40,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465748231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:40,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:40,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218803273] [2022-12-14 05:40:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:40,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:40,268 INFO L87 Difference]: Start difference. First operand 772 states and 1101 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:40,428 INFO L93 Difference]: Finished difference Result 1799 states and 2621 transitions. [2022-12-14 05:40:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:40,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 138 [2022-12-14 05:40:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:40,431 INFO L225 Difference]: With dead ends: 1799 [2022-12-14 05:40:40,431 INFO L226 Difference]: Without dead ends: 1110 [2022-12-14 05:40:40,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:40,433 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 74 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:40,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 876 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:40:40,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2022-12-14 05:40:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1105. [2022-12-14 05:40:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 785 states have (on average 1.3554140127388534) internal successors, (1064), 795 states have internal predecessors, (1064), 275 states have call successors, (275), 44 states have call predecessors, (275), 44 states have return successors, (274), 273 states have call predecessors, (274), 274 states have call successors, (274) [2022-12-14 05:40:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1613 transitions. [2022-12-14 05:40:40,480 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1613 transitions. Word has length 138 [2022-12-14 05:40:40,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:40,480 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1613 transitions. [2022-12-14 05:40:40,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1613 transitions. [2022-12-14 05:40:40,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-14 05:40:40,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:40,483 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:40,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 05:40:40,483 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1606295601, now seen corresponding path program 1 times [2022-12-14 05:40:40,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:40,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981067218] [2022-12-14 05:40:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:40,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:40:40,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:40,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981067218] [2022-12-14 05:40:40,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981067218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:40,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:40,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:40,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409252220] [2022-12-14 05:40:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:40,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:40,544 INFO L87 Difference]: Start difference. First operand 1105 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:40,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:40,695 INFO L93 Difference]: Finished difference Result 2593 states and 3853 transitions. [2022-12-14 05:40:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:40,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 139 [2022-12-14 05:40:40,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:40,700 INFO L225 Difference]: With dead ends: 2593 [2022-12-14 05:40:40,700 INFO L226 Difference]: Without dead ends: 1611 [2022-12-14 05:40:40,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:40,703 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 72 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:40,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 857 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:40:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-12-14 05:40:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1606. [2022-12-14 05:40:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1167 states have (on average 1.3693230505569838) internal successors, (1598), 1177 states have internal predecessors, (1598), 394 states have call successors, (394), 44 states have call predecessors, (394), 44 states have return successors, (393), 392 states have call predecessors, (393), 393 states have call successors, (393) [2022-12-14 05:40:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2385 transitions. [2022-12-14 05:40:40,800 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2385 transitions. Word has length 139 [2022-12-14 05:40:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:40,801 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2385 transitions. [2022-12-14 05:40:40,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2385 transitions. [2022-12-14 05:40:40,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 05:40:40,808 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:40,808 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:40,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 05:40:40,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:40,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:40,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1645557116, now seen corresponding path program 1 times [2022-12-14 05:40:40,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:40,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041232255] [2022-12-14 05:40:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:40,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:40:40,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:40,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041232255] [2022-12-14 05:40:40,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041232255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:40,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:40,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936169130] [2022-12-14 05:40:40,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:40,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:40,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:40,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:40,871 INFO L87 Difference]: Start difference. First operand 1606 states and 2385 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:41,127 INFO L93 Difference]: Finished difference Result 3746 states and 5636 transitions. [2022-12-14 05:40:41,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:41,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 140 [2022-12-14 05:40:41,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:41,137 INFO L225 Difference]: With dead ends: 3746 [2022-12-14 05:40:41,137 INFO L226 Difference]: Without dead ends: 2361 [2022-12-14 05:40:41,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:41,141 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 70 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:41,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 851 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:40:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2022-12-14 05:40:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2356. [2022-12-14 05:40:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 1755 states have (on average 1.3794871794871795) internal successors, (2421), 1765 states have internal predecessors, (2421), 556 states have call successors, (556), 44 states have call predecessors, (556), 44 states have return successors, (555), 554 states have call predecessors, (555), 555 states have call successors, (555) [2022-12-14 05:40:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3532 transitions. [2022-12-14 05:40:41,252 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3532 transitions. Word has length 140 [2022-12-14 05:40:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:41,252 INFO L495 AbstractCegarLoop]: Abstraction has 2356 states and 3532 transitions. [2022-12-14 05:40:41,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3532 transitions. [2022-12-14 05:40:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 05:40:41,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:41,257 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:41,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 05:40:41,257 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:41,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:41,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1565510393, now seen corresponding path program 1 times [2022-12-14 05:40:41,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:41,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521394364] [2022-12-14 05:40:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:41,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:40:41,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521394364] [2022-12-14 05:40:41,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521394364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:41,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:41,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:41,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743451023] [2022-12-14 05:40:41,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:41,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:41,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:41,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:41,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:41,318 INFO L87 Difference]: Start difference. First operand 2356 states and 3532 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:41,641 INFO L93 Difference]: Finished difference Result 5513 states and 8361 transitions. [2022-12-14 05:40:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:41,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2022-12-14 05:40:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:41,656 INFO L225 Difference]: With dead ends: 5513 [2022-12-14 05:40:41,656 INFO L226 Difference]: Without dead ends: 3549 [2022-12-14 05:40:41,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:41,660 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 68 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:41,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 851 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:40:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2022-12-14 05:40:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 3544. [2022-12-14 05:40:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 2698 states have (on average 1.3873239436619718) internal successors, (3743), 2708 states have internal predecessors, (3743), 801 states have call successors, (801), 44 states have call predecessors, (801), 44 states have return successors, (800), 799 states have call predecessors, (800), 800 states have call successors, (800) [2022-12-14 05:40:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 5344 transitions. [2022-12-14 05:40:41,844 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 5344 transitions. Word has length 141 [2022-12-14 05:40:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:41,844 INFO L495 AbstractCegarLoop]: Abstraction has 3544 states and 5344 transitions. [2022-12-14 05:40:41,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 5344 transitions. [2022-12-14 05:40:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-14 05:40:41,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:41,853 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:41,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 05:40:41,853 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:41,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1627240271, now seen corresponding path program 1 times [2022-12-14 05:40:41,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:41,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196725332] [2022-12-14 05:40:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:41,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:40:41,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:41,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196725332] [2022-12-14 05:40:41,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196725332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:41,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:41,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411547705] [2022-12-14 05:40:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:41,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:41,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:41,911 INFO L87 Difference]: Start difference. First operand 3544 states and 5344 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:42,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:42,281 INFO L93 Difference]: Finished difference Result 8747 states and 13300 transitions. [2022-12-14 05:40:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:42,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 142 [2022-12-14 05:40:42,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:42,299 INFO L225 Difference]: With dead ends: 8747 [2022-12-14 05:40:42,299 INFO L226 Difference]: Without dead ends: 5762 [2022-12-14 05:40:42,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:42,305 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 66 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:42,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 873 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:40:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2022-12-14 05:40:42,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 5757. [2022-12-14 05:40:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5757 states, 4418 states have (on average 1.3813942960615664) internal successors, (6103), 4428 states have internal predecessors, (6103), 1294 states have call successors, (1294), 44 states have call predecessors, (1294), 44 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) [2022-12-14 05:40:42,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5757 states to 5757 states and 8690 transitions. [2022-12-14 05:40:42,603 INFO L78 Accepts]: Start accepts. Automaton has 5757 states and 8690 transitions. Word has length 142 [2022-12-14 05:40:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:42,604 INFO L495 AbstractCegarLoop]: Abstraction has 5757 states and 8690 transitions. [2022-12-14 05:40:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 5757 states and 8690 transitions. [2022-12-14 05:40:42,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-14 05:40:42,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:42,614 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:42,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 05:40:42,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:42,615 INFO L85 PathProgramCache]: Analyzing trace with hash 871376956, now seen corresponding path program 1 times [2022-12-14 05:40:42,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:42,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142614717] [2022-12-14 05:40:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:42,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:40:42,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:42,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142614717] [2022-12-14 05:40:42,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142614717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:42,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:42,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:42,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212362345] [2022-12-14 05:40:42,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:42,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:42,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:42,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:42,695 INFO L87 Difference]: Start difference. First operand 5757 states and 8690 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:43,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:43,230 INFO L93 Difference]: Finished difference Result 14311 states and 21844 transitions. [2022-12-14 05:40:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:43,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 143 [2022-12-14 05:40:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:43,266 INFO L225 Difference]: With dead ends: 14311 [2022-12-14 05:40:43,266 INFO L226 Difference]: Without dead ends: 9463 [2022-12-14 05:40:43,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:43,277 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 64 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:43,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 857 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:40:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9463 states. [2022-12-14 05:40:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9463 to 9458. [2022-12-14 05:40:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9458 states, 7297 states have (on average 1.3846786350555023) internal successors, (10104), 7307 states have internal predecessors, (10104), 2116 states have call successors, (2116), 44 states have call predecessors, (2116), 44 states have return successors, (2115), 2114 states have call predecessors, (2115), 2115 states have call successors, (2115) [2022-12-14 05:40:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9458 states to 9458 states and 14335 transitions. [2022-12-14 05:40:43,849 INFO L78 Accepts]: Start accepts. Automaton has 9458 states and 14335 transitions. Word has length 143 [2022-12-14 05:40:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:43,850 INFO L495 AbstractCegarLoop]: Abstraction has 9458 states and 14335 transitions. [2022-12-14 05:40:43,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:43,850 INFO L276 IsEmpty]: Start isEmpty. Operand 9458 states and 14335 transitions. [2022-12-14 05:40:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 05:40:43,861 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:43,861 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:43,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 05:40:43,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:43,861 INFO L85 PathProgramCache]: Analyzing trace with hash 291612584, now seen corresponding path program 1 times [2022-12-14 05:40:43,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:43,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425875713] [2022-12-14 05:40:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:40:43,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:43,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425875713] [2022-12-14 05:40:43,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425875713] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:43,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:43,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:43,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542421644] [2022-12-14 05:40:43,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:43,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:43,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:43,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:43,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:43,941 INFO L87 Difference]: Start difference. First operand 9458 states and 14335 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:44,724 INFO L93 Difference]: Finished difference Result 23684 states and 36055 transitions. [2022-12-14 05:40:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:44,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 144 [2022-12-14 05:40:44,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:44,757 INFO L225 Difference]: With dead ends: 23684 [2022-12-14 05:40:44,757 INFO L226 Difference]: Without dead ends: 15675 [2022-12-14 05:40:44,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:44,770 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 62 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:44,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 866 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:40:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15675 states. [2022-12-14 05:40:45,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15675 to 15670. [2022-12-14 05:40:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15670 states, 12306 states have (on average 1.3808711197789696) internal successors, (16993), 12316 states have internal predecessors, (16993), 3319 states have call successors, (3319), 44 states have call predecessors, (3319), 44 states have return successors, (3318), 3317 states have call predecessors, (3318), 3318 states have call successors, (3318) [2022-12-14 05:40:45,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15670 states to 15670 states and 23630 transitions. [2022-12-14 05:40:45,777 INFO L78 Accepts]: Start accepts. Automaton has 15670 states and 23630 transitions. Word has length 144 [2022-12-14 05:40:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:45,778 INFO L495 AbstractCegarLoop]: Abstraction has 15670 states and 23630 transitions. [2022-12-14 05:40:45,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 15670 states and 23630 transitions. [2022-12-14 05:40:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-14 05:40:45,792 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:45,792 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:45,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 05:40:45,792 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:45,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash -567795628, now seen corresponding path program 1 times [2022-12-14 05:40:45,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:45,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570075902] [2022-12-14 05:40:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:45,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:40:45,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570075902] [2022-12-14 05:40:45,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570075902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:45,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:45,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:45,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297565447] [2022-12-14 05:40:45,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:45,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:45,880 INFO L87 Difference]: Start difference. First operand 15670 states and 23630 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:47,123 INFO L93 Difference]: Finished difference Result 41291 states and 62657 transitions. [2022-12-14 05:40:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:47,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 145 [2022-12-14 05:40:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:47,184 INFO L225 Difference]: With dead ends: 41291 [2022-12-14 05:40:47,184 INFO L226 Difference]: Without dead ends: 27629 [2022-12-14 05:40:47,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:47,205 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 60 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:47,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 857 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:40:47,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27629 states. [2022-12-14 05:40:48,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27629 to 27624. [2022-12-14 05:40:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27624 states, 21810 states have (on average 1.3775790921595599) internal successors, (30045), 21820 states have internal predecessors, (30045), 5769 states have call successors, (5769), 44 states have call predecessors, (5769), 44 states have return successors, (5768), 5767 states have call predecessors, (5768), 5768 states have call successors, (5768) [2022-12-14 05:40:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27624 states to 27624 states and 41582 transitions. [2022-12-14 05:40:48,955 INFO L78 Accepts]: Start accepts. Automaton has 27624 states and 41582 transitions. Word has length 145 [2022-12-14 05:40:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:48,955 INFO L495 AbstractCegarLoop]: Abstraction has 27624 states and 41582 transitions. [2022-12-14 05:40:48,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 27624 states and 41582 transitions. [2022-12-14 05:40:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-14 05:40:48,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:48,964 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:48,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 05:40:48,965 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:48,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash -612012971, now seen corresponding path program 1 times [2022-12-14 05:40:48,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:48,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224901126] [2022-12-14 05:40:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:48,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:40:49,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:49,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224901126] [2022-12-14 05:40:49,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224901126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:49,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:49,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:49,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159557977] [2022-12-14 05:40:49,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:49,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:49,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:49,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:49,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:49,045 INFO L87 Difference]: Start difference. First operand 27624 states and 41582 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:51,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:51,565 INFO L93 Difference]: Finished difference Result 74213 states and 112539 transitions. [2022-12-14 05:40:51,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:51,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 146 [2022-12-14 05:40:51,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:51,704 INFO L225 Difference]: With dead ends: 74213 [2022-12-14 05:40:51,705 INFO L226 Difference]: Without dead ends: 49380 [2022-12-14 05:40:51,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:51,751 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 58 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:51,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 856 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:40:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49380 states. [2022-12-14 05:40:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49380 to 49375. [2022-12-14 05:40:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49375 states, 39048 states have (on average 1.3769719319811513) internal successors, (53768), 39058 states have internal predecessors, (53768), 10282 states have call successors, (10282), 44 states have call predecessors, (10282), 44 states have return successors, (10281), 10280 states have call predecessors, (10281), 10281 states have call successors, (10281) [2022-12-14 05:40:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49375 states to 49375 states and 74331 transitions. [2022-12-14 05:40:54,647 INFO L78 Accepts]: Start accepts. Automaton has 49375 states and 74331 transitions. Word has length 146 [2022-12-14 05:40:54,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:54,647 INFO L495 AbstractCegarLoop]: Abstraction has 49375 states and 74331 transitions. [2022-12-14 05:40:54,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:54,647 INFO L276 IsEmpty]: Start isEmpty. Operand 49375 states and 74331 transitions. [2022-12-14 05:40:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-14 05:40:54,658 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:54,658 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:54,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 05:40:54,658 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:54,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash -416113074, now seen corresponding path program 1 times [2022-12-14 05:40:54,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:54,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002842768] [2022-12-14 05:40:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:54,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:40:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:40:54,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:40:54,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002842768] [2022-12-14 05:40:54,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002842768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:40:54,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:40:54,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:40:54,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901741221] [2022-12-14 05:40:54,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:40:54,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:40:54,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:40:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:54,729 INFO L87 Difference]: Start difference. First operand 49375 states and 74331 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:40:59,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:59,390 INFO L93 Difference]: Finished difference Result 90883 states and 137203 transitions. [2022-12-14 05:40:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:40:59,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 147 [2022-12-14 05:40:59,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:59,594 INFO L225 Difference]: With dead ends: 90883 [2022-12-14 05:40:59,594 INFO L226 Difference]: Without dead ends: 90668 [2022-12-14 05:40:59,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:40:59,615 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 56 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:59,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 857 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:40:59,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90668 states. [2022-12-14 05:41:04,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90668 to 90663. [2022-12-14 05:41:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90663 states, 71968 states have (on average 1.3691918630502447) internal successors, (98538), 71978 states have internal predecessors, (98538), 18650 states have call successors, (18650), 44 states have call predecessors, (18650), 44 states have return successors, (18649), 18648 states have call predecessors, (18649), 18649 states have call successors, (18649) [2022-12-14 05:41:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90663 states to 90663 states and 135837 transitions. [2022-12-14 05:41:04,371 INFO L78 Accepts]: Start accepts. Automaton has 90663 states and 135837 transitions. Word has length 147 [2022-12-14 05:41:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:41:04,372 INFO L495 AbstractCegarLoop]: Abstraction has 90663 states and 135837 transitions. [2022-12-14 05:41:04,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-14 05:41:04,372 INFO L276 IsEmpty]: Start isEmpty. Operand 90663 states and 135837 transitions. [2022-12-14 05:41:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-12-14 05:41:04,385 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:41:04,385 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:41:04,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 05:41:04,385 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:41:04,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:41:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash -39229475, now seen corresponding path program 1 times [2022-12-14 05:41:04,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:41:04,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874146002] [2022-12-14 05:41:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:41:04,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:41:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:41:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:41:05,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:41:05,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874146002] [2022-12-14 05:41:05,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874146002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:41:05,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:41:05,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-14 05:41:05,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729484471] [2022-12-14 05:41:05,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:41:05,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 05:41:05,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:41:05,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 05:41:05,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2022-12-14 05:41:05,840 INFO L87 Difference]: Start difference. First operand 90663 states and 135837 transitions. Second operand has 26 states, 19 states have (on average 4.421052631578948) internal successors, (84), 18 states have internal predecessors, (84), 12 states have call successors, (28), 6 states have call predecessors, (28), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2022-12-14 05:41:12,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:41:12,641 INFO L93 Difference]: Finished difference Result 90788 states and 136022 transitions. [2022-12-14 05:41:12,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 05:41:12,641 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 4.421052631578948) internal successors, (84), 18 states have internal predecessors, (84), 12 states have call successors, (28), 6 states have call predecessors, (28), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) Word has length 148 [2022-12-14 05:41:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:41:12,895 INFO L225 Difference]: With dead ends: 90788 [2022-12-14 05:41:12,895 INFO L226 Difference]: Without dead ends: 90780 [2022-12-14 05:41:12,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=195, Invalid=1611, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 05:41:12,920 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 399 mSDsluCounter, 7195 mSDsCounter, 0 mSdLazyCounter, 4088 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 7650 SdHoareTripleChecker+Invalid, 4242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 4088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:41:12,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 7650 Invalid, 4242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 4088 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 05:41:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90780 states. [2022-12-14 05:41:18,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90780 to 90736. [2022-12-14 05:41:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90736 states, 72006 states have (on average 1.3691220176096437) internal successors, (98585), 72022 states have internal predecessors, (98585), 18680 states have call successors, (18680), 51 states have call predecessors, (18680), 49 states have return successors, (18675), 18674 states have call predecessors, (18675), 18675 states have call successors, (18675) [2022-12-14 05:41:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90736 states to 90736 states and 135940 transitions. [2022-12-14 05:41:18,480 INFO L78 Accepts]: Start accepts. Automaton has 90736 states and 135940 transitions. Word has length 148 [2022-12-14 05:41:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:41:18,480 INFO L495 AbstractCegarLoop]: Abstraction has 90736 states and 135940 transitions. [2022-12-14 05:41:18,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 4.421052631578948) internal successors, (84), 18 states have internal predecessors, (84), 12 states have call successors, (28), 6 states have call predecessors, (28), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2022-12-14 05:41:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 90736 states and 135940 transitions. [2022-12-14 05:41:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-14 05:41:18,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:41:18,497 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:41:18,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 05:41:18,498 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:41:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:41:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash -367401467, now seen corresponding path program 1 times [2022-12-14 05:41:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:41:18,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081916819] [2022-12-14 05:41:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:41:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:41:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:41:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:41:19,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:41:19,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081916819] [2022-12-14 05:41:19,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081916819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:41:19,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:41:19,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-12-14 05:41:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274799498] [2022-12-14 05:41:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:41:19,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 05:41:19,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:41:19,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 05:41:19,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:41:19,535 INFO L87 Difference]: Start difference. First operand 90736 states and 135940 transitions. Second operand has 27 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 12 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 05:41:25,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:41:25,976 INFO L93 Difference]: Finished difference Result 90851 states and 136120 transitions. [2022-12-14 05:41:25,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 05:41:25,977 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 12 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 153 [2022-12-14 05:41:25,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:41:26,236 INFO L225 Difference]: With dead ends: 90851 [2022-12-14 05:41:26,236 INFO L226 Difference]: Without dead ends: 90849 [2022-12-14 05:41:26,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 05:41:26,264 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 394 mSDsluCounter, 6378 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 6830 SdHoareTripleChecker+Invalid, 3900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:41:26,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 6830 Invalid, 3900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 05:41:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90849 states. [2022-12-14 05:41:31,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90849 to 90781. [2022-12-14 05:41:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90781 states, 72031 states have (on average 1.3690910857825103) internal successors, (98617), 72051 states have internal predecessors, (98617), 18698 states have call successors, (18698), 53 states have call predecessors, (18698), 51 states have return successors, (18693), 18692 states have call predecessors, (18693), 18693 states have call successors, (18693) [2022-12-14 05:41:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90781 states to 90781 states and 136008 transitions. [2022-12-14 05:41:31,855 INFO L78 Accepts]: Start accepts. Automaton has 90781 states and 136008 transitions. Word has length 153 [2022-12-14 05:41:31,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:41:31,855 INFO L495 AbstractCegarLoop]: Abstraction has 90781 states and 136008 transitions. [2022-12-14 05:41:31,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 12 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 05:41:31,855 INFO L276 IsEmpty]: Start isEmpty. Operand 90781 states and 136008 transitions. [2022-12-14 05:41:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-14 05:41:31,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:41:31,873 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:41:31,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 05:41:31,873 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:41:31,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:41:31,874 INFO L85 PathProgramCache]: Analyzing trace with hash 174406018, now seen corresponding path program 1 times [2022-12-14 05:41:31,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:41:31,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073221493] [2022-12-14 05:41:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:41:31,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:41:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:41:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:41:31,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:41:31,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073221493] [2022-12-14 05:41:31,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073221493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:41:31,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:41:31,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:41:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22674687] [2022-12-14 05:41:31,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:41:31,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:41:31,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:41:31,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:41:31,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:41:31,934 INFO L87 Difference]: Start difference. First operand 90781 states and 136008 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-14 05:41:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:41:42,191 INFO L93 Difference]: Finished difference Result 272197 states and 407861 transitions. [2022-12-14 05:41:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:41:42,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 157 [2022-12-14 05:41:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:41:42,670 INFO L225 Difference]: With dead ends: 272197 [2022-12-14 05:41:42,670 INFO L226 Difference]: Without dead ends: 181440 [2022-12-14 05:41:42,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:41:42,785 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 374 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:41:42,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 907 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:41:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181440 states. [2022-12-14 05:41:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181440 to 181438. [2022-12-14 05:41:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181438 states, 143997 states have (on average 1.369104911907887) internal successors, (197147), 144022 states have internal predecessors, (197147), 37341 states have call successors, (37341), 103 states have call predecessors, (37341), 99 states have return successors, (37350), 37333 states have call predecessors, (37350), 37331 states have call successors, (37350) [2022-12-14 05:41:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181438 states to 181438 states and 271838 transitions. [2022-12-14 05:41:55,083 INFO L78 Accepts]: Start accepts. Automaton has 181438 states and 271838 transitions. Word has length 157 [2022-12-14 05:41:55,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:41:55,083 INFO L495 AbstractCegarLoop]: Abstraction has 181438 states and 271838 transitions. [2022-12-14 05:41:55,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-14 05:41:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 181438 states and 271838 transitions. [2022-12-14 05:41:55,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-14 05:41:55,125 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:41:55,125 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:41:55,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 05:41:55,126 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:41:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:41:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1407244350, now seen corresponding path program 1 times [2022-12-14 05:41:55,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:41:55,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892315511] [2022-12-14 05:41:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:41:55,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:41:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:41:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:41:55,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:41:55,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892315511] [2022-12-14 05:41:55,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892315511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:41:55,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:41:55,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:41:55,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397347670] [2022-12-14 05:41:55,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:41:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:41:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:41:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:41:55,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:41:55,175 INFO L87 Difference]: Start difference. First operand 181438 states and 271838 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:42:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:12,091 INFO L93 Difference]: Finished difference Result 453506 states and 679504 transitions. [2022-12-14 05:42:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:42:12,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 159 [2022-12-14 05:42:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:12,869 INFO L225 Difference]: With dead ends: 453506 [2022-12-14 05:42:12,869 INFO L226 Difference]: Without dead ends: 272097 [2022-12-14 05:42:13,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:42:13,101 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 449 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:13,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1115 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:42:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272097 states. [2022-12-14 05:42:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272097 to 272095. [2022-12-14 05:42:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272095 states, 215964 states have (on average 1.3690892926598877) internal successors, (295674), 215992 states have internal predecessors, (295674), 55986 states have call successors, (55986), 150 states have call predecessors, (55986), 144 states have return successors, (56000), 55972 states have call predecessors, (56000), 55971 states have call successors, (56000) [2022-12-14 05:42:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272095 states to 272095 states and 407660 transitions. [2022-12-14 05:42:32,835 INFO L78 Accepts]: Start accepts. Automaton has 272095 states and 407660 transitions. Word has length 159 [2022-12-14 05:42:32,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:42:32,835 INFO L495 AbstractCegarLoop]: Abstraction has 272095 states and 407660 transitions. [2022-12-14 05:42:32,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:42:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 272095 states and 407660 transitions. [2022-12-14 05:42:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-14 05:42:32,900 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:42:32,900 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:42:32,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 05:42:32,901 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:42:32,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:42:32,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1795759436, now seen corresponding path program 1 times [2022-12-14 05:42:32,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:42:32,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690346237] [2022-12-14 05:42:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:42:32,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:42:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:42:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:42:33,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:42:33,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690346237] [2022-12-14 05:42:33,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690346237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:42:33,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:42:33,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-12-14 05:42:33,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17322806] [2022-12-14 05:42:33,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:42:33,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 05:42:33,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:42:33,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 05:42:33,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:42:33,929 INFO L87 Difference]: Start difference. First operand 272095 states and 407660 transitions. Second operand has 27 states, 20 states have (on average 4.6) internal successors, (92), 19 states have internal predecessors, (92), 12 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2022-12-14 05:42:51,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:42:51,961 INFO L93 Difference]: Finished difference Result 272261 states and 407912 transitions. [2022-12-14 05:42:51,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 05:42:51,962 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 20 states have (on average 4.6) internal successors, (92), 19 states have internal predecessors, (92), 12 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) Word has length 160 [2022-12-14 05:42:51,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:42:52,722 INFO L225 Difference]: With dead ends: 272261 [2022-12-14 05:42:52,722 INFO L226 Difference]: Without dead ends: 272259 [2022-12-14 05:42:52,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 05:42:52,776 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 337 mSDsluCounter, 7153 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 7613 SdHoareTripleChecker+Invalid, 4265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:42:52,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 7613 Invalid, 4265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 05:42:52,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272259 states. [2022-12-14 05:43:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272259 to 272130. [2022-12-14 05:43:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272130 states, 215985 states have (on average 1.3690719262911777) internal successors, (295699), 216014 states have internal predecessors, (295699), 55997 states have call successors, (55997), 151 states have call predecessors, (55997), 147 states have return successors, (56013), 55984 states have call predecessors, (56013), 55982 states have call successors, (56013) [2022-12-14 05:43:12,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272130 states to 272130 states and 407709 transitions. [2022-12-14 05:43:12,324 INFO L78 Accepts]: Start accepts. Automaton has 272130 states and 407709 transitions. Word has length 160 [2022-12-14 05:43:12,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:12,324 INFO L495 AbstractCegarLoop]: Abstraction has 272130 states and 407709 transitions. [2022-12-14 05:43:12,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 20 states have (on average 4.6) internal successors, (92), 19 states have internal predecessors, (92), 12 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2022-12-14 05:43:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 272130 states and 407709 transitions. [2022-12-14 05:43:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-12-14 05:43:12,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:12,404 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:43:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 05:43:12,404 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:43:12,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1921094040, now seen corresponding path program 1 times [2022-12-14 05:43:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:12,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189031889] [2022-12-14 05:43:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:12,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 05:43:13,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:13,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189031889] [2022-12-14 05:43:13,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189031889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:43:13,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:43:13,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-14 05:43:13,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748631242] [2022-12-14 05:43:13,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:43:13,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-14 05:43:13,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:13,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-14 05:43:13,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-12-14 05:43:13,471 INFO L87 Difference]: Start difference. First operand 272130 states and 407709 transitions. Second operand has 28 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 12 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-12-14 05:43:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:31,151 INFO L93 Difference]: Finished difference Result 272326 states and 408005 transitions. [2022-12-14 05:43:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 05:43:31,151 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 12 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 165 [2022-12-14 05:43:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:32,012 INFO L225 Difference]: With dead ends: 272326 [2022-12-14 05:43:32,012 INFO L226 Difference]: Without dead ends: 272324 [2022-12-14 05:43:32,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 05:43:32,068 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 369 mSDsluCounter, 8131 mSDsCounter, 0 mSdLazyCounter, 4948 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 8579 SdHoareTripleChecker+Invalid, 5105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 4948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:32,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 8579 Invalid, 5105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 4948 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 05:43:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272324 states. [2022-12-14 05:43:50,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272324 to 272165. [2022-12-14 05:43:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272165 states, 216006 states have (on average 1.3690545632991675) internal successors, (295724), 216036 states have internal predecessors, (295724), 56008 states have call successors, (56008), 152 states have call predecessors, (56008), 150 states have return successors, (56028), 55996 states have call predecessors, (56028), 55993 states have call successors, (56028) [2022-12-14 05:43:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272165 states to 272165 states and 407760 transitions. [2022-12-14 05:43:51,464 INFO L78 Accepts]: Start accepts. Automaton has 272165 states and 407760 transitions. Word has length 165 [2022-12-14 05:43:51,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:51,464 INFO L495 AbstractCegarLoop]: Abstraction has 272165 states and 407760 transitions. [2022-12-14 05:43:51,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 12 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-12-14 05:43:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 272165 states and 407760 transitions. [2022-12-14 05:43:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-12-14 05:43:51,996 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:51,996 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:43:51,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 05:43:51,997 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:43:51,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:51,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1179087010, now seen corresponding path program 1 times [2022-12-14 05:43:51,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:51,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121037568] [2022-12-14 05:43:51,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:51,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-14 05:43:52,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:52,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121037568] [2022-12-14 05:43:52,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121037568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:43:52,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:43:52,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 05:43:52,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167625816] [2022-12-14 05:43:52,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:43:52,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:43:52,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:52,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:43:52,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:43:52,173 INFO L87 Difference]: Start difference. First operand 272165 states and 407760 transitions. Second operand has 8 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (38), 5 states have call predecessors, (38), 3 states have call successors, (38) [2022-12-14 05:44:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:08,036 INFO L93 Difference]: Finished difference Result 272604 states and 408333 transitions. [2022-12-14 05:44:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:44:08,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (38), 5 states have call predecessors, (38), 3 states have call successors, (38) Word has length 222 [2022-12-14 05:44:08,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:08,798 INFO L225 Difference]: With dead ends: 272604 [2022-12-14 05:44:08,798 INFO L226 Difference]: Without dead ends: 272168 [2022-12-14 05:44:08,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-12-14 05:44:08,864 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 481 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:08,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 2501 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:44:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272168 states. [2022-12-14 05:44:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272168 to 272168. [2022-12-14 05:44:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272168 states, 216008 states have (on average 1.369041887337506) internal successors, (295724), 216038 states have internal predecessors, (295724), 56008 states have call successors, (56008), 152 states have call predecessors, (56008), 151 states have return successors, (56031), 55997 states have call predecessors, (56031), 55993 states have call successors, (56031) [2022-12-14 05:44:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272168 states to 272168 states and 407763 transitions. [2022-12-14 05:44:28,587 INFO L78 Accepts]: Start accepts. Automaton has 272168 states and 407763 transitions. Word has length 222 [2022-12-14 05:44:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:28,587 INFO L495 AbstractCegarLoop]: Abstraction has 272168 states and 407763 transitions. [2022-12-14 05:44:28,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (38), 5 states have call predecessors, (38), 3 states have call successors, (38) [2022-12-14 05:44:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 272168 states and 407763 transitions. [2022-12-14 05:44:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-12-14 05:44:29,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:29,038 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:29,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 05:44:29,038 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:29,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:29,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1365472172, now seen corresponding path program 1 times [2022-12-14 05:44:29,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:29,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495879605] [2022-12-14 05:44:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:29,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-12-14 05:44:29,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:29,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495879605] [2022-12-14 05:44:29,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495879605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:29,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:29,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:44:29,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959976916] [2022-12-14 05:44:29,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:29,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:44:29,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:29,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:44:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:44:29,442 INFO L87 Difference]: Start difference. First operand 272168 states and 407763 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 4 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-12-14 05:44:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:47,453 INFO L93 Difference]: Finished difference Result 273314 states and 409200 transitions. [2022-12-14 05:44:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:44:47,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 4 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 227 [2022-12-14 05:44:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:48,356 INFO L225 Difference]: With dead ends: 273314 [2022-12-14 05:44:48,356 INFO L226 Difference]: Without dead ends: 272734 [2022-12-14 05:44:48,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:44:48,435 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 452 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:48,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 814 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 05:44:48,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272734 states. [2022-12-14 05:45:08,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272734 to 272670. [2022-12-14 05:45:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272670 states, 216300 states have (on average 1.3687147480351365) internal successors, (296053), 216348 states have internal predecessors, (296053), 56125 states have call successors, (56125), 226 states have call predecessors, (56125), 244 states have return successors, (56213), 56128 states have call predecessors, (56213), 56110 states have call successors, (56213) [2022-12-14 05:45:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272670 states to 272670 states and 408391 transitions. [2022-12-14 05:45:09,753 INFO L78 Accepts]: Start accepts. Automaton has 272670 states and 408391 transitions. Word has length 227 [2022-12-14 05:45:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:09,754 INFO L495 AbstractCegarLoop]: Abstraction has 272670 states and 408391 transitions. [2022-12-14 05:45:09,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 4 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-12-14 05:45:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 272670 states and 408391 transitions. [2022-12-14 05:45:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-12-14 05:45:10,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:10,477 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:45:10,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 05:45:10,477 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:45:10,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:10,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1316943091, now seen corresponding path program 1 times [2022-12-14 05:45:10,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:10,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732070539] [2022-12-14 05:45:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:10,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-12-14 05:45:14,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:14,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732070539] [2022-12-14 05:45:14,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732070539] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:45:14,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170046632] [2022-12-14 05:45:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:14,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:45:14,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:45:14,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:45:14,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d023c4-d180-4073-8ee9-81da60ded5a9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:45:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:14,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 2134 conjuncts, 114 conjunts are in the unsatisfiable core [2022-12-14 05:45:14,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:45:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-14 05:45:17,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:45:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-12-14 05:45:28,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170046632] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:45:28,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [258384035] [2022-12-14 05:45:28,644 INFO L159 IcfgInterpreter]: Started Sifa with 189 locations of interest [2022-12-14 05:45:28,644 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:45:28,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:45:28,644 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:45:28,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:47:27,372 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2022-12-14 05:47:28,607 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 725 for LOIs [2022-12-14 05:47:29,461 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-12-14 05:47:29,755 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2022-12-14 05:47:31,235 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 274 for LOIs [2022-12-14 05:47:34,083 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-12-14 05:47:34,880 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2022-12-14 05:47:35,179 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 539 for LOIs [2022-12-14 05:47:46,021 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 255 for LOIs [2022-12-14 05:47:46,564 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 253 for LOIs [2022-12-14 05:47:47,098 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 253 for LOIs [2022-12-14 05:47:53,095 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 385 for LOIs [2022-12-14 05:47:53,305 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 235 for LOIs [2022-12-14 05:47:57,824 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 229 for LOIs [2022-12-14 05:47:58,288 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 227 for LOIs [2022-12-14 05:48:03,404 INFO L197 IcfgInterpreter]: Interpreting procedure queue with input of size 395 for LOIs [2022-12-14 05:48:03,619 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 213 for LOIs [2022-12-14 05:48:03,655 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 473 for LOIs [2022-12-14 05:48:05,358 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 217 for LOIs [2022-12-14 05:48:05,387 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 215 for LOIs [2022-12-14 05:48:05,796 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 215 for LOIs [2022-12-14 05:48:05,822 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 390 for LOIs [2022-12-14 05:48:06,028 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 390 for LOIs [2022-12-14 05:48:06,244 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 386 for LOIs [2022-12-14 05:48:06,467 INFO L180 IcfgInterpreter]: Interpretation finished