./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 71f8755187e6ba7ba58a893461c08a19c806970ccaa90de1a74095d8e9221b58 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:36:27,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:36:27,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:36:27,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:36:27,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:36:27,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:36:27,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:36:27,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:36:27,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:36:27,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:36:27,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:36:27,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:36:27,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:36:27,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:36:27,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:36:27,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:36:27,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:36:27,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:36:27,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:36:27,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:36:27,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:36:27,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:36:27,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:36:27,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:36:27,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:36:27,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:36:27,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:36:27,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:36:27,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:36:27,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:36:27,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:36:27,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:36:27,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:36:27,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:36:27,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:36:27,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:36:27,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:36:27,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:36:27,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:36:27,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:36:27,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:36:27,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:36:27,398 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:36:27,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:36:27,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:36:27,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:36:27,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:36:27,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:36:27,402 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:36:27,403 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:36:27,403 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:36:27,403 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:36:27,405 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:36:27,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:36:27,405 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:36:27,406 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:36:27,406 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:36:27,407 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:36:27,407 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:36:27,407 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:36:27,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:36:27,409 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:36:27,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:36:27,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:36:27,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:36:27,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:36:27,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:36:27,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:36:27,412 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:36:27,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:36:27,413 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:36:27,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:36:27,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:36:27,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:36:27,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:36:27,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:36:27,415 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:36:27,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:36:27,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:36:27,416 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:36:27,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:36:27,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:36:27,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:36:27,417 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_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71f8755187e6ba7ba58a893461c08a19c806970ccaa90de1a74095d8e9221b58 [2022-11-23 14:36:27,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:36:27,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:36:27,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:36:27,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:36:27,838 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:36:27,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec4_product29.cil.c [2022-11-23 14:36:31,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:36:31,823 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:36:31,826 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/sv-benchmarks/c/product-lines/email_spec4_product29.cil.c [2022-11-23 14:36:31,859 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/data/d3074b405/51dacbffd3a34e42bccc23608fa9745e/FLAG719d02ee4 [2022-11-23 14:36:31,881 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/data/d3074b405/51dacbffd3a34e42bccc23608fa9745e [2022-11-23 14:36:31,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:36:31,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:36:31,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:36:31,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:36:31,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:36:31,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:31" (1/1) ... [2022-11-23 14:36:31,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5df34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:31, skipping insertion in model container [2022-11-23 14:36:31,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:31" (1/1) ... [2022-11-23 14:36:31,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:36:31,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:36:32,657 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_1971b68b-f257-442c-88ef-5e88ba7729f6/sv-benchmarks/c/product-lines/email_spec4_product29.cil.c[58438,58451] [2022-11-23 14:36:32,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:36:32,722 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:36:32,842 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_1971b68b-f257-442c-88ef-5e88ba7729f6/sv-benchmarks/c/product-lines/email_spec4_product29.cil.c[58438,58451] [2022-11-23 14:36:32,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:36:32,898 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:36:32,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32 WrapperNode [2022-11-23 14:36:32,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:36:32,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:36:32,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:36:32,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:36:32,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:32,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:33,027 INFO L138 Inliner]: procedures = 131, calls = 227, calls flagged for inlining = 55, calls inlined = 47, statements flattened = 925 [2022-11-23 14:36:33,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:36:33,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:36:33,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:36:33,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:36:33,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:33,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:33,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:33,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:33,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:33,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:33,092 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:33,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:33,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:36:33,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:36:33,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:36:33,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:36:33,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (1/1) ... [2022-11-23 14:36:33,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:36:33,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:33,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:36:33,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:36:33,227 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 14:36:33,228 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 14:36:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 14:36:33,228 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 14:36:33,228 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 14:36:33,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 14:36:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 14:36:33,229 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 14:36:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 14:36:33,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 14:36:33,229 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 14:36:33,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 14:36:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 14:36:33,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 14:36:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 14:36:33,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 14:36:33,230 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 14:36:33,230 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 14:36:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 14:36:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 14:36:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 14:36:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 14:36:33,231 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 14:36:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 14:36:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 14:36:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 14:36:33,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 14:36:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 14:36:33,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 14:36:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:36:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 14:36:33,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 14:36:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 14:36:33,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 14:36:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 14:36:33,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 14:36:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 14:36:33,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 14:36:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 14:36:33,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 14:36:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 14:36:33,234 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 14:36:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-23 14:36:33,235 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-23 14:36:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 14:36:33,235 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 14:36:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 14:36:33,235 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 14:36:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 14:36:33,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 14:36:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 14:36:33,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 14:36:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 14:36:33,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 14:36:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:36:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 14:36:33,237 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 14:36:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 14:36:33,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 14:36:33,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:36:33,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:36:33,493 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:36:33,508 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:36:34,639 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:36:35,363 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:36:35,364 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:36:35,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:35 BoogieIcfgContainer [2022-11-23 14:36:35,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:36:35,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:36:35,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:36:35,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:36:35,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:36:31" (1/3) ... [2022-11-23 14:36:35,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cb94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:35, skipping insertion in model container [2022-11-23 14:36:35,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:32" (2/3) ... [2022-11-23 14:36:35,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cb94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:35, skipping insertion in model container [2022-11-23 14:36:35,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:35" (3/3) ... [2022-11-23 14:36:35,379 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product29.cil.c [2022-11-23 14:36:35,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:36:35,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:36:35,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:36:35,511 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;@5ed3fb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:36:35,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:36:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 120 states have (on average 1.3083333333333333) internal successors, (157), 125 states have internal predecessors, (157), 63 states have call successors, (63), 28 states have call predecessors, (63), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-23 14:36:35,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 14:36:35,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:35,546 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:36:35,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:35,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:35,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2091724772, now seen corresponding path program 1 times [2022-11-23 14:36:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:35,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181902614] [2022-11-23 14:36:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:36:36,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:36,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181902614] [2022-11-23 14:36:36,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181902614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:36:36,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:36:36,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:36:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095165655] [2022-11-23 14:36:36,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:36:36,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:36:36,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:36,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:36:36,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:36:36,183 INFO L87 Difference]: Start difference. First operand has 213 states, 120 states have (on average 1.3083333333333333) internal successors, (157), 125 states have internal predecessors, (157), 63 states have call successors, (63), 28 states have call predecessors, (63), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:36:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:36,447 INFO L93 Difference]: Finished difference Result 334 states and 437 transitions. [2022-11-23 14:36:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:36:36,452 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-11-23 14:36:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:36,474 INFO L225 Difference]: With dead ends: 334 [2022-11-23 14:36:36,475 INFO L226 Difference]: Without dead ends: 210 [2022-11-23 14:36:36,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:36:36,497 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:36,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:36:36,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-23 14:36:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-11-23 14:36:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 118 states have (on average 1.2796610169491525) internal successors, (151), 122 states have internal predecessors, (151), 63 states have call successors, (63), 28 states have call predecessors, (63), 28 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-23 14:36:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 276 transitions. [2022-11-23 14:36:36,574 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 276 transitions. Word has length 75 [2022-11-23 14:36:36,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:36,576 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 276 transitions. [2022-11-23 14:36:36,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:36:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 276 transitions. [2022-11-23 14:36:36,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 14:36:36,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:36,582 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:36:36,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:36:36,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:36,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash 417847008, now seen corresponding path program 1 times [2022-11-23 14:36:36,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:36,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972641005] [2022-11-23 14:36:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:36,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:36:36,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:36,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972641005] [2022-11-23 14:36:36,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972641005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:36:36,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:36:36,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:36:36,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764581730] [2022-11-23 14:36:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:36:36,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:36:36,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:36,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:36:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:36:36,970 INFO L87 Difference]: Start difference. First operand 210 states and 276 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:36:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:37,152 INFO L93 Difference]: Finished difference Result 330 states and 422 transitions. [2022-11-23 14:36:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:36:37,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-11-23 14:36:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:37,156 INFO L225 Difference]: With dead ends: 330 [2022-11-23 14:36:37,156 INFO L226 Difference]: Without dead ends: 212 [2022-11-23 14:36:37,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:36:37,158 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:37,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 477 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:36:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-23 14:36:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-11-23 14:36:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 120 states have (on average 1.275) internal successors, (153), 124 states have internal predecessors, (153), 63 states have call successors, (63), 28 states have call predecessors, (63), 28 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-23 14:36:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 278 transitions. [2022-11-23 14:36:37,186 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 278 transitions. Word has length 76 [2022-11-23 14:36:37,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:37,187 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 278 transitions. [2022-11-23 14:36:37,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:36:37,187 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 278 transitions. [2022-11-23 14:36:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 14:36:37,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:37,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:36:37,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:36:37,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1931427946, now seen corresponding path program 1 times [2022-11-23 14:36:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:37,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703416246] [2022-11-23 14:36:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:36:37,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:37,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703416246] [2022-11-23 14:36:37,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703416246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:36:37,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:36:37,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:36:37,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262418853] [2022-11-23 14:36:37,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:36:37,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:36:37,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:36:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:36:37,332 INFO L87 Difference]: Start difference. First operand 212 states and 278 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:36:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:37,503 INFO L93 Difference]: Finished difference Result 459 states and 623 transitions. [2022-11-23 14:36:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:36:37,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-11-23 14:36:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:37,507 INFO L225 Difference]: With dead ends: 459 [2022-11-23 14:36:37,507 INFO L226 Difference]: Without dead ends: 265 [2022-11-23 14:36:37,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:36:37,518 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 59 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:37,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 490 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:36:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-23 14:36:37,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 260. [2022-11-23 14:36:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 154 states have (on average 1.3506493506493507) internal successors, (208), 158 states have internal predecessors, (208), 77 states have call successors, (77), 28 states have call predecessors, (77), 28 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2022-11-23 14:36:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 361 transitions. [2022-11-23 14:36:37,585 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 361 transitions. Word has length 81 [2022-11-23 14:36:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:37,588 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 361 transitions. [2022-11-23 14:36:37,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:36:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 361 transitions. [2022-11-23 14:36:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 14:36:37,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:37,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:36:37,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:36:37,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:37,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1546386723, now seen corresponding path program 1 times [2022-11-23 14:36:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:37,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022815004] [2022-11-23 14:36:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:37,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:36:37,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:37,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022815004] [2022-11-23 14:36:37,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022815004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:36:37,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162701665] [2022-11-23 14:36:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:37,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:37,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:37,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:36:38,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:36:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:38,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:36:38,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:36:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:36:38,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:36:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:36:38,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162701665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:36:38,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [329705371] [2022-11-23 14:36:38,595 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-23 14:36:38,596 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:36:38,603 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:36:38,610 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:36:38,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:37:21,364 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 14:37:21,764 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 474 for LOIs [2022-11-23 14:38:02,772 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2022-11-23 14:38:03,125 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 14:38:03,466 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 472 for LOIs [2022-11-23 14:38:11,180 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 260 for LOIs [2022-11-23 14:38:23,469 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 439 for LOIs [2022-11-23 14:38:23,783 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 243 for LOIs [2022-11-23 14:38:23,871 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 240 for LOIs [2022-11-23 14:38:23,925 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-11-23 14:38:24,767 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 245 for LOIs [2022-11-23 14:38:24,814 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 248 for LOIs [2022-11-23 14:38:24,869 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:38:33,268 WARN L233 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 546 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:39:08,533 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 470 DAG size of output: 286 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:39:14,067 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 482 DAG size of output: 283 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:39:23,160 WARN L233 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 492 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:39:31,076 WARN L233 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 504 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:39:41,034 WARN L233 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 514 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:39:48,924 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 565 DAG size of output: 319 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:39:55,344 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 567 DAG size of output: 321 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:40:04,481 WARN L233 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 569 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:40:13,647 WARN L233 SmtUtils]: Spent 8.73s on a formula simplification. DAG size of input: 567 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:40:22,902 WARN L233 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 571 DAG size of output: 375 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:40:29,271 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 566 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:40:54,685 WARN L233 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 530 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:41:00,447 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 450 DAG size of output: 276 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:41:05,894 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 466 DAG size of output: 281 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:41:12,447 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 526 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:41:18,314 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 539 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:41:25,553 WARN L233 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 472 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:41:32,529 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 484 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:42:43,339 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 546 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:42:51,407 WARN L233 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 549 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:42:51,414 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3624#(and (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~msg#1| 1) (= ~__ste_client_privateKey0~0 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~tmp~14#1|) (<= 1 |outgoing__wrappee__Encrypt_mail_#in~msg#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |old(~__ste_email_isEncrypted1~0)| 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~6#1| 1) (= ~__ste_Client_counter~0 0) (<= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_#in~client#1| 1) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~client#1|) (<= |outgoing__wrappee__Encrypt_~receiver~0#1| 2) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= ~__ste_email_encryptionKey1~0 0) (<= |outgoing__wrappee__Encrypt_mail_#in~msg#1| 1) (<= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= |outgoing__wrappee__Encrypt_~pubkey~0#1| 0) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~client#1|) (<= |outgoing__wrappee__Encrypt_#in~client#1| 1) (= ~__ste_client_name2~0.offset 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~tmp~14#1| 0) (<= |outgoing__wrappee__Encrypt_mail_~msg#1| 1) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~msg#1|) (<= ~__ste_client_idCounter2~0 3) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~msg#1|) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_email_body0~0.offset 0) (<= 1 |outgoing__wrappee__Encrypt_~client#1|) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__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) (= ~head~0.offset 0) (<= |outgoing__wrappee__Encrypt_getClientId_~retValue_acc~24#1| 2147483647) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~client#1|) (<= |outgoing__wrappee__Encrypt_mail_~client#1| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 ~__ste_Client_Keyring1_User2~0) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~tmp~16#1| 2147483647) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~client#1| 1) (<= |#NULL.offset| 0) (<= 0 ~__ste_Client_Keyring1_User0~0) (<= 0 ~__SELECTED_FEATURE_AddressBook~0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 (+ |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~tmp~16#1| 2147483648)) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 ~__ste_email_id1~0) (<= ~__ste_Client_AddressBook0_Address1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= |outgoing__wrappee__Encrypt_~client#1| 1) (<= 0 ~__ste_Client_AddressBook2_Address1~0) (<= 0 ~__ste_client_name0~0.offset) (<= 1 |outgoing__wrappee__Encrypt_#in~client#1|) (<= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= ~__ste_client_name1~0.base 0) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= ~__SELECTED_FEATURE_AddressBook~0 0) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= |outgoing__wrappee__Encrypt_getClientId_~handle#1| 1) (<= ~__ste_Client_AddressBook0_Address0~0 0) (<= |outgoing__wrappee__Encrypt_~msg#1| 1) (<= 0 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~6#1|) (= 3 ~chuck~0) (<= |outgoing__wrappee__Encrypt_~tmp___0~7#1| 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_email_isSigned1~0 0) (<= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_client_autoResponse0~0) (<= |outgoing__wrappee__Encrypt_getClientId_#in~handle#1| 1) (<= 1 |outgoing__wrappee__Encrypt_getClientId_#in~handle#1|) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= 1 |outgoing__wrappee__Encrypt_#in~msg#1|) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= ~__ste_ClientKeyring_size1~0 0) (<= ~__ste_Client_Keyring1_User2~0 0) (<= |outgoing__wrappee__Encrypt_#in~msg#1| 1) (<= 0 ~head~0.base) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 2 |outgoing__wrappee__Encrypt_~receiver~0#1|) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 ~__ste_email_subject0~0.offset) (= ~rjh~0 2) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~msg#1|) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 0 ~__ste_ClientKeyring_size1~0) (<= 0 ~__ste_client_forwardReceiver2~0) (= ~__ste_client_name2~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 1 |outgoing__wrappee__Encrypt_~msg#1|) (<= ~__ste_email_encryptionKey0~0 0) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~msg#1|) (<= |old(~__ste_email_encryptionKey1~0)| 0) (<= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_#in~msg#1| 1) (= ~__ste_email_subject1~0.base 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= ~__ste_email_id1~0 0) (<= 0 ~__ste_Client_AddressBook0_Address0~0) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_#in~msg#1|) (<= ~__ste_Client_Keyring1_User0~0 0) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= 1 |outgoing__wrappee__Encrypt_getClientId_~handle#1|) (<= ~__ste_Client_AddressBook0_Address2~0 0) (= ~__ste_Client_Keyring2_User2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~__utac__ad__arg2~0#1|) (<= ~head~0.base 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~client#1| 1) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~__utac__ad__arg1~0#1|) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~client#1|) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= 1 |outgoing__wrappee__Encrypt_mail_#in~client#1|) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing__wrappee__Encrypt_~tmp~17#1| 2) (<= |outgoing__wrappee__Encrypt_mail_#in~client#1| 1) (<= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 0 ~__ste_Client_Keyring2_User1~0) (<= 2 |outgoing__wrappee__Encrypt_~tmp~17#1|) (= ~queued_message~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (not (= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~6#1| 0)) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_#in~client#1|) (<= ~__ste_client_name0~0.offset 0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= 0 |#NULL.offset|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= 0 (+ |outgoing__wrappee__Encrypt_getClientId_~retValue_acc~24#1| 2147483648)) (<= 0 ~__ste_client_forwardReceiver1~0) (= ~__ste_client_name0~0.base 0) (<= 0 (+ |outgoing__wrappee__Encrypt_getClientId_#res#1| 2147483648)) (<= |outgoing__wrappee__Encrypt_mail_~__utac__ad__arg1~0#1| 1) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= ~__ste_Client_AddressBook2_Address1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= |outgoing__wrappee__Encrypt_mail_~__utac__ad__arg2~0#1| 1) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 ~__ste_client_name1~0.base) (<= 0 |outgoing__wrappee__Encrypt_~tmp___0~7#1|) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing__wrappee__Encrypt_getClientId_#res#1| 2147483647) (<= ~queued_client~0 0))' at error location [2022-11-23 14:42:51,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:42:51,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:42:51,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 14:42:51,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376921137] [2022-11-23 14:42:51,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:42:51,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:42:51,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:51,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:42:51,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=4354, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 14:42:51,419 INFO L87 Difference]: Start difference. First operand 260 states and 361 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 14:42:51,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:51,868 INFO L93 Difference]: Finished difference Result 653 states and 972 transitions. [2022-11-23 14:42:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:42:51,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 82 [2022-11-23 14:42:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:51,873 INFO L225 Difference]: With dead ends: 653 [2022-11-23 14:42:51,873 INFO L226 Difference]: Without dead ends: 535 [2022-11-23 14:42:51,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 266.5s TimeCoverageRelationStatistics Valid=202, Invalid=4354, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 14:42:51,877 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 223 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:51,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1173 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:42:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-11-23 14:42:51,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 520. [2022-11-23 14:42:51,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 335 states have (on average 1.4746268656716417) internal successors, (494), 339 states have internal predecessors, (494), 156 states have call successors, (156), 28 states have call predecessors, (156), 28 states have return successors, (155), 154 states have call predecessors, (155), 155 states have call successors, (155) [2022-11-23 14:42:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 805 transitions. [2022-11-23 14:42:51,947 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 805 transitions. Word has length 82 [2022-11-23 14:42:51,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:51,948 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 805 transitions. [2022-11-23 14:42:51,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 14:42:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 805 transitions. [2022-11-23 14:42:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 14:42:51,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:51,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:51,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:42:52,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1971b68b-f257-442c-88ef-5e88ba7729f6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:42:52,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash -306453984, now seen corresponding path program 1 times [2022-11-23 14:42:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:52,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846016476] [2022-11-23 14:42:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:52,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:42:52,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:52,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846016476] [2022-11-23 14:42:52,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846016476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:52,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:52,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375700792] [2022-11-23 14:42:52,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:52,277 INFO L87 Difference]: Start difference. First operand 520 states and 805 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:52,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:52,422 INFO L93 Difference]: Finished difference Result 1270 states and 2008 transitions. [2022-11-23 14:42:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:52,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 88 [2022-11-23 14:42:52,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:52,430 INFO L225 Difference]: With dead ends: 1270 [2022-11-23 14:42:52,430 INFO L226 Difference]: Without dead ends: 782 [2022-11-23 14:42:52,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:52,433 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 57 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:52,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 495 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-11-23 14:42:52,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 777. [2022-11-23 14:42:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 513 states have (on average 1.4951267056530215) internal successors, (767), 517 states have internal predecessors, (767), 235 states have call successors, (235), 28 states have call predecessors, (235), 28 states have return successors, (234), 233 states have call predecessors, (234), 234 states have call successors, (234) [2022-11-23 14:42:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1236 transitions. [2022-11-23 14:42:52,491 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1236 transitions. Word has length 88 [2022-11-23 14:42:52,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:52,491 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1236 transitions. [2022-11-23 14:42:52,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1236 transitions. [2022-11-23 14:42:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 14:42:52,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:52,502 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:52,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:42:52,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:52,510 INFO L85 PathProgramCache]: Analyzing trace with hash -882271146, now seen corresponding path program 1 times [2022-11-23 14:42:52,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:52,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070327207] [2022-11-23 14:42:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:52,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:42:52,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:52,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070327207] [2022-11-23 14:42:52,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070327207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:52,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:52,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:52,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356042450] [2022-11-23 14:42:52,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:52,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:52,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:52,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:52,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:52,624 INFO L87 Difference]: Start difference. First operand 777 states and 1236 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:52,795 INFO L93 Difference]: Finished difference Result 1892 states and 3055 transitions. [2022-11-23 14:42:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:52,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 89 [2022-11-23 14:42:52,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:52,803 INFO L225 Difference]: With dead ends: 1892 [2022-11-23 14:42:52,804 INFO L226 Difference]: Without dead ends: 1177 [2022-11-23 14:42:52,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:52,809 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 55 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:52,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 488 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:52,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-11-23 14:42:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1172. [2022-11-23 14:42:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 789 states have (on average 1.5044359949302915) internal successors, (1187), 793 states have internal predecessors, (1187), 354 states have call successors, (354), 28 states have call predecessors, (354), 28 states have return successors, (353), 352 states have call predecessors, (353), 353 states have call successors, (353) [2022-11-23 14:42:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1894 transitions. [2022-11-23 14:42:52,887 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1894 transitions. Word has length 89 [2022-11-23 14:42:52,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:52,889 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1894 transitions. [2022-11-23 14:42:52,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:52,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1894 transitions. [2022-11-23 14:42:52,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 14:42:52,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:52,896 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:52,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:42:52,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1830742594, now seen corresponding path program 1 times [2022-11-23 14:42:52,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:52,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363300578] [2022-11-23 14:42:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:52,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:42:53,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:53,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363300578] [2022-11-23 14:42:53,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363300578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:53,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:53,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:53,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019502800] [2022-11-23 14:42:53,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:53,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:53,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:53,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:53,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:53,018 INFO L87 Difference]: Start difference. First operand 1172 states and 1894 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:53,213 INFO L93 Difference]: Finished difference Result 2795 states and 4567 transitions. [2022-11-23 14:42:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:53,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 90 [2022-11-23 14:42:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:53,224 INFO L225 Difference]: With dead ends: 2795 [2022-11-23 14:42:53,224 INFO L226 Difference]: Without dead ends: 1765 [2022-11-23 14:42:53,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:53,231 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 53 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:53,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 485 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2022-11-23 14:42:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1760. [2022-11-23 14:42:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1215 states have (on average 1.5102880658436213) internal successors, (1835), 1219 states have internal predecessors, (1835), 516 states have call successors, (516), 28 states have call predecessors, (516), 28 states have return successors, (515), 514 states have call predecessors, (515), 515 states have call successors, (515) [2022-11-23 14:42:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2866 transitions. [2022-11-23 14:42:53,351 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2866 transitions. Word has length 90 [2022-11-23 14:42:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:53,353 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 2866 transitions. [2022-11-23 14:42:53,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2866 transitions. [2022-11-23 14:42:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 14:42:53,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:53,363 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:53,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:42:53,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:53,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash -873329131, now seen corresponding path program 1 times [2022-11-23 14:42:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:53,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173103210] [2022-11-23 14:42:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:53,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:42:53,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:53,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173103210] [2022-11-23 14:42:53,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173103210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:53,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:53,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:53,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707814902] [2022-11-23 14:42:53,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:53,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:53,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:53,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:53,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:53,470 INFO L87 Difference]: Start difference. First operand 1760 states and 2866 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:53,736 INFO L93 Difference]: Finished difference Result 4180 states and 6875 transitions. [2022-11-23 14:42:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:53,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 91 [2022-11-23 14:42:53,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:53,752 INFO L225 Difference]: With dead ends: 4180 [2022-11-23 14:42:53,752 INFO L226 Difference]: Without dead ends: 2699 [2022-11-23 14:42:53,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:53,759 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 51 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:53,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 483 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:53,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2022-11-23 14:42:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2694. [2022-11-23 14:42:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 1904 states have (on average 1.5131302521008403) internal successors, (2881), 1908 states have internal predecessors, (2881), 761 states have call successors, (761), 28 states have call predecessors, (761), 28 states have return successors, (760), 759 states have call predecessors, (760), 760 states have call successors, (760) [2022-11-23 14:42:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 4402 transitions. [2022-11-23 14:42:53,972 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 4402 transitions. Word has length 91 [2022-11-23 14:42:53,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:53,972 INFO L495 AbstractCegarLoop]: Abstraction has 2694 states and 4402 transitions. [2022-11-23 14:42:53,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:53,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 4402 transitions. [2022-11-23 14:42:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 14:42:53,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:53,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:53,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:42:53,985 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:53,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1335354114, now seen corresponding path program 1 times [2022-11-23 14:42:53,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:53,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857357159] [2022-11-23 14:42:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:53,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:42:54,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:54,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857357159] [2022-11-23 14:42:54,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857357159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:54,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:54,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:54,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576855447] [2022-11-23 14:42:54,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:54,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:54,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:54,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:54,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:54,084 INFO L87 Difference]: Start difference. First operand 2694 states and 4402 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:54,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:54,468 INFO L93 Difference]: Finished difference Result 6696 states and 11035 transitions. [2022-11-23 14:42:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:54,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2022-11-23 14:42:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:54,494 INFO L225 Difference]: With dead ends: 6696 [2022-11-23 14:42:54,494 INFO L226 Difference]: Without dead ends: 4424 [2022-11-23 14:42:54,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:54,506 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 49 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:54,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 499 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4424 states. [2022-11-23 14:42:54,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4424 to 4419. [2022-11-23 14:42:54,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4419 states, 3136 states have (on average 1.503188775510204) internal successors, (4714), 3140 states have internal predecessors, (4714), 1254 states have call successors, (1254), 28 states have call predecessors, (1254), 28 states have return successors, (1253), 1252 states have call predecessors, (1253), 1253 states have call successors, (1253) [2022-11-23 14:42:54,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 7221 transitions. [2022-11-23 14:42:54,909 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 7221 transitions. Word has length 92 [2022-11-23 14:42:54,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:54,910 INFO L495 AbstractCegarLoop]: Abstraction has 4419 states and 7221 transitions. [2022-11-23 14:42:54,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 7221 transitions. [2022-11-23 14:42:54,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 14:42:54,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:54,928 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:54,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:42:54,929 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:54,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash 614534353, now seen corresponding path program 1 times [2022-11-23 14:42:54,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:54,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224737534] [2022-11-23 14:42:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:54,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:42:55,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:55,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224737534] [2022-11-23 14:42:55,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224737534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:55,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:55,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:55,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746867555] [2022-11-23 14:42:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:55,013 INFO L87 Difference]: Start difference. First operand 4419 states and 7221 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:55,559 INFO L93 Difference]: Finished difference Result 11112 states and 18320 transitions. [2022-11-23 14:42:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:55,560 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), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-11-23 14:42:55,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:55,602 INFO L225 Difference]: With dead ends: 11112 [2022-11-23 14:42:55,602 INFO L226 Difference]: Without dead ends: 7381 [2022-11-23 14:42:55,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:55,617 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 47 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:55,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 490 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7381 states. [2022-11-23 14:42:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7381 to 7376. [2022-11-23 14:42:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7376 states, 5271 states have (on average 1.4985771200910643) internal successors, (7899), 5275 states have internal predecessors, (7899), 2076 states have call successors, (2076), 28 states have call predecessors, (2076), 28 states have return successors, (2075), 2074 states have call predecessors, (2075), 2075 states have call successors, (2075) [2022-11-23 14:42:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7376 states to 7376 states and 12050 transitions. [2022-11-23 14:42:56,266 INFO L78 Accepts]: Start accepts. Automaton has 7376 states and 12050 transitions. Word has length 93 [2022-11-23 14:42:56,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:56,266 INFO L495 AbstractCegarLoop]: Abstraction has 7376 states and 12050 transitions. [2022-11-23 14:42:56,267 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), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7376 states and 12050 transitions. [2022-11-23 14:42:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-23 14:42:56,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:56,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:56,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:42:56,295 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1248864448, now seen corresponding path program 1 times [2022-11-23 14:42:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:56,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970846021] [2022-11-23 14:42:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:42:56,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:56,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970846021] [2022-11-23 14:42:56,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970846021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:56,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:56,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:56,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120658062] [2022-11-23 14:42:56,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:56,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:56,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:56,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:56,473 INFO L87 Difference]: Start difference. First operand 7376 states and 12050 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:57,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:57,398 INFO L93 Difference]: Finished difference Result 18579 states and 30582 transitions. [2022-11-23 14:42:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:57,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2022-11-23 14:42:57,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:57,491 INFO L225 Difference]: With dead ends: 18579 [2022-11-23 14:42:57,491 INFO L226 Difference]: Without dead ends: 12325 [2022-11-23 14:42:57,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:57,517 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 45 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:57,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 486 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:42:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12325 states. [2022-11-23 14:42:58,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12325 to 12320. [2022-11-23 14:42:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12320 states, 9012 states have (on average 1.5002219263204617) internal successors, (13520), 9016 states have internal predecessors, (13520), 3279 states have call successors, (3279), 28 states have call predecessors, (3279), 28 states have return successors, (3278), 3277 states have call predecessors, (3278), 3278 states have call successors, (3278) [2022-11-23 14:42:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12320 states to 12320 states and 20077 transitions. [2022-11-23 14:42:58,623 INFO L78 Accepts]: Start accepts. Automaton has 12320 states and 20077 transitions. Word has length 94 [2022-11-23 14:42:58,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:58,624 INFO L495 AbstractCegarLoop]: Abstraction has 12320 states and 20077 transitions. [2022-11-23 14:42:58,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:42:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand 12320 states and 20077 transitions. [2022-11-23 14:42:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 14:42:58,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:58,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:58,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:42:58,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1355024112, now seen corresponding path program 1 times [2022-11-23 14:42:58,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:58,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71621499] [2022-11-23 14:42:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:58,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:42:58,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:58,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71621499] [2022-11-23 14:42:58,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71621499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:58,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:58,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:58,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344878947] [2022-11-23 14:42:58,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:58,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:58,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:58,745 INFO L87 Difference]: Start difference. First operand 12320 states and 20077 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:43:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:43:00,650 INFO L93 Difference]: Finished difference Result 32583 states and 53444 transitions. [2022-11-23 14:43:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:43:00,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2022-11-23 14:43:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:43:00,749 INFO L225 Difference]: With dead ends: 32583 [2022-11-23 14:43:00,749 INFO L226 Difference]: Without dead ends: 21837 [2022-11-23 14:43:00,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:43:00,784 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 43 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:43:00,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 490 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:43:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21837 states. [2022-11-23 14:43:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21837 to 21832. [2022-11-23 14:43:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21832 states, 16074 states have (on average 1.4926589523454026) internal successors, (23993), 16078 states have internal predecessors, (23993), 5729 states have call successors, (5729), 28 states have call predecessors, (5729), 28 states have return successors, (5728), 5727 states have call predecessors, (5728), 5728 states have call successors, (5728) [2022-11-23 14:43:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21832 states to 21832 states and 35450 transitions. [2022-11-23 14:43:02,988 INFO L78 Accepts]: Start accepts. Automaton has 21832 states and 35450 transitions. Word has length 95 [2022-11-23 14:43:02,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:43:02,990 INFO L495 AbstractCegarLoop]: Abstraction has 21832 states and 35450 transitions. [2022-11-23 14:43:02,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:43:02,990 INFO L276 IsEmpty]: Start isEmpty. Operand 21832 states and 35450 transitions. [2022-11-23 14:43:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 14:43:03,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:43:03,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:43:03,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:43:03,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:43:03,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:43:03,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1383184794, now seen corresponding path program 1 times [2022-11-23 14:43:03,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:43:03,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251211618] [2022-11-23 14:43:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:43:03,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:43:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:43:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:43:03,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:43:03,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251211618] [2022-11-23 14:43:03,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251211618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:43:03,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:43:03,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:43:03,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318832207] [2022-11-23 14:43:03,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:43:03,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:43:03,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:43:03,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:43:03,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:43:03,154 INFO L87 Difference]: Start difference. First operand 21832 states and 35450 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:43:05,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:43:05,485 INFO L93 Difference]: Finished difference Result 59270 states and 96696 transitions. [2022-11-23 14:43:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:43:05,486 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 96 [2022-11-23 14:43:05,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:43:05,821 INFO L225 Difference]: With dead ends: 59270 [2022-11-23 14:43:05,821 INFO L226 Difference]: Without dead ends: 39607 [2022-11-23 14:43:05,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:43:05,882 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 41 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:43:05,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 489 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:43:05,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39607 states. [2022-11-23 14:43:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39607 to 39602. [2022-11-23 14:43:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39602 states, 29331 states have (on average 1.4820156148784562) internal successors, (43469), 29335 states have internal predecessors, (43469), 10242 states have call successors, (10242), 28 states have call predecessors, (10242), 28 states have return successors, (10241), 10240 states have call predecessors, (10241), 10241 states have call successors, (10241) [2022-11-23 14:43:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39602 states to 39602 states and 63952 transitions. [2022-11-23 14:43:09,695 INFO L78 Accepts]: Start accepts. Automaton has 39602 states and 63952 transitions. Word has length 96 [2022-11-23 14:43:09,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:43:09,696 INFO L495 AbstractCegarLoop]: Abstraction has 39602 states and 63952 transitions. [2022-11-23 14:43:09,697 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:43:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 39602 states and 63952 transitions. [2022-11-23 14:43:09,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-23 14:43:09,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:43:09,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:43:09,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:43:09,744 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:43:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:43:09,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1202529456, now seen corresponding path program 1 times [2022-11-23 14:43:09,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:43:09,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122262800] [2022-11-23 14:43:09,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:43:09,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:43:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:43:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:43:09,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:43:09,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122262800] [2022-11-23 14:43:09,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122262800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:43:09,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:43:09,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:43:09,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215720707] [2022-11-23 14:43:09,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:43:09,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:43:09,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:43:09,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:43:09,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:43:09,864 INFO L87 Difference]: Start difference. First operand 39602 states and 63952 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:43:14,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:43:14,693 INFO L93 Difference]: Finished difference Result 73168 states and 118331 transitions. [2022-11-23 14:43:14,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:43:14,693 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2022-11-23 14:43:14,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:43:14,997 INFO L225 Difference]: With dead ends: 73168 [2022-11-23 14:43:14,997 INFO L226 Difference]: Without dead ends: 73050 [2022-11-23 14:43:15,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:43:15,023 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 39 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:43:15,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 488 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:43:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73050 states. [2022-11-23 14:43:19,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73050 to 73045. [2022-11-23 14:43:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73045 states, 54406 states have (on average 1.4680549939344925) internal successors, (79871), 54410 states have internal predecessors, (79871), 18610 states have call successors, (18610), 28 states have call predecessors, (18610), 28 states have return successors, (18609), 18608 states have call predecessors, (18609), 18609 states have call successors, (18609) [2022-11-23 14:43:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73045 states to 73045 states and 117090 transitions. [2022-11-23 14:43:19,942 INFO L78 Accepts]: Start accepts. Automaton has 73045 states and 117090 transitions. Word has length 97 [2022-11-23 14:43:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:43:19,943 INFO L495 AbstractCegarLoop]: Abstraction has 73045 states and 117090 transitions. [2022-11-23 14:43:19,943 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 14:43:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 73045 states and 117090 transitions. [2022-11-23 14:43:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 14:43:20,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:43:20,415 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:43:20,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:43:20,415 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:43:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:43:20,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1977489465, now seen corresponding path program 1 times [2022-11-23 14:43:20,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:43:20,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324655102] [2022-11-23 14:43:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:43:20,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:43:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:43:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 14:43:22,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:43:22,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324655102] [2022-11-23 14:43:22,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324655102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:43:22,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:43:22,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-23 14:43:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351578879] [2022-11-23 14:43:22,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:43:22,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 14:43:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:43:22,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 14:43:22,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:43:22,987 INFO L87 Difference]: Start difference. First operand 73045 states and 117090 transitions. Second operand has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-23 14:43:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:43:29,626 INFO L93 Difference]: Finished difference Result 73191 states and 117312 transitions. [2022-11-23 14:43:29,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 14:43:29,627 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 98 [2022-11-23 14:43:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:43:30,021 INFO L225 Difference]: With dead ends: 73191 [2022-11-23 14:43:30,022 INFO L226 Difference]: Without dead ends: 73187 [2022-11-23 14:43:30,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 14:43:30,050 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 515 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:43:30,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 3300 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 14:43:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73187 states.