./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf397912a53dab4d44f4df9c274fc7c69b1023a0a0a29a356bc73a744537daa6 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:57:48,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:57:48,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:57:48,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:57:48,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:57:48,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:57:48,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:57:48,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:57:48,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:57:48,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:57:48,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:57:48,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:57:48,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:57:48,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:57:48,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:57:48,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:57:48,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:57:48,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:57:48,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:57:48,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:57:48,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:57:48,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:57:48,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:57:48,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:57:48,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:57:48,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:57:48,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:57:48,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:57:48,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:57:48,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:57:48,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:57:48,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:57:48,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:57:48,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:57:48,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:57:48,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:57:48,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:57:48,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:57:48,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:57:48,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:57:48,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:57:48,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:57:48,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:57:48,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:57:48,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:57:48,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:57:48,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:57:48,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:57:48,345 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:57:48,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:57:48,346 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:57:48,346 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:57:48,347 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:57:48,347 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:57:48,348 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:57:48,348 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:57:48,348 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:57:48,348 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:57:48,349 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:57:48,349 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:57:48,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:57:48,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:57:48,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:57:48,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:57:48,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:57:48,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:57:48,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:57:48,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:57:48,351 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:57:48,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:57:48,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:57:48,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:57:48,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:57:48,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:57:48,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:57:48,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:57:48,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:57:48,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:57:48,354 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:57:48,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:57:48,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:57:48,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:57:48,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:57:48,355 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf397912a53dab4d44f4df9c274fc7c69b1023a0a0a29a356bc73a744537daa6 [2021-11-25 19:57:48,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:57:48,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:57:48,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:57:48,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:57:48,664 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:57:48,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c [2021-11-25 19:57:48,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/data/96a26e3af/b9455ab5bc2d4f169cf9941c6af132d2/FLAGa52f71b99 [2021-11-25 19:57:49,397 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:57:49,398 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c [2021-11-25 19:57:49,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/data/96a26e3af/b9455ab5bc2d4f169cf9941c6af132d2/FLAGa52f71b99 [2021-11-25 19:57:49,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/data/96a26e3af/b9455ab5bc2d4f169cf9941c6af132d2 [2021-11-25 19:57:49,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:57:49,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:57:49,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:57:49,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:57:49,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:57:49,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:57:49" (1/1) ... [2021-11-25 19:57:49,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@594e5bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:49, skipping insertion in model container [2021-11-25 19:57:49,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:57:49" (1/1) ... [2021-11-25 19:57:49,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:57:49,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:57:50,161 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c[18883,18896] [2021-11-25 19:57:50,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:57:50,437 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:57:50,491 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c[18883,18896] [2021-11-25 19:57:50,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:57:50,641 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:57:50,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50 WrapperNode [2021-11-25 19:57:50,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:57:50,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:57:50,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:57:50,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:57:50,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (1/1) ... [2021-11-25 19:57:50,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (1/1) ... [2021-11-25 19:57:50,796 INFO L137 Inliner]: procedures = 151, calls = 283, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1312 [2021-11-25 19:57:50,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:57:50,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:57:50,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:57:50,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:57:50,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (1/1) ... [2021-11-25 19:57:50,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (1/1) ... [2021-11-25 19:57:50,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (1/1) ... [2021-11-25 19:57:50,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (1/1) ... [2021-11-25 19:57:50,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (1/1) ... [2021-11-25 19:57:50,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (1/1) ... [2021-11-25 19:57:50,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (1/1) ... [2021-11-25 19:57:50,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:57:50,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:57:50,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:57:50,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:57:50,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (1/1) ... [2021-11-25 19:57:50,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:57:50,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:50,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:57:50,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:57:51,010 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-25 19:57:51,011 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-25 19:57:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-25 19:57:51,011 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-25 19:57:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-25 19:57:51,012 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-25 19:57:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-25 19:57:51,012 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-25 19:57:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-25 19:57:51,012 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-25 19:57:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-25 19:57:51,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-25 19:57:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-25 19:57:51,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-25 19:57:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-25 19:57:51,014 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-25 19:57:51,014 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-25 19:57:51,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-25 19:57:51,014 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-25 19:57:51,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-25 19:57:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-25 19:57:51,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-25 19:57:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-25 19:57:51,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-25 19:57:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-25 19:57:51,015 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-25 19:57:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-25 19:57:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-25 19:57:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-25 19:57:51,016 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-25 19:57:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-25 19:57:51,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-25 19:57:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-25 19:57:51,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-25 19:57:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-25 19:57:51,019 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-25 19:57:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-25 19:57:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-25 19:57:51,019 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-25 19:57:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-25 19:57:51,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-25 19:57:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-25 19:57:51,020 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-25 19:57:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-25 19:57:51,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-25 19:57:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-25 19:57:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-25 19:57:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:57:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-25 19:57:51,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-25 19:57:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-25 19:57:51,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-25 19:57:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-25 19:57:51,025 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-25 19:57:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-25 19:57:51,025 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-25 19:57:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-25 19:57:51,026 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-25 19:57:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-25 19:57:51,026 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-25 19:57:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-25 19:57:51,027 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-25 19:57:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-25 19:57:51,027 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-25 19:57:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-25 19:57:51,027 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-25 19:57:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-25 19:57:51,028 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-25 19:57:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-25 19:57:51,028 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-25 19:57:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-25 19:57:51,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-25 19:57:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-25 19:57:51,029 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-25 19:57:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-25 19:57:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-25 19:57:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-25 19:57:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-25 19:57:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-25 19:57:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-25 19:57:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:57:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-25 19:57:51,031 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-25 19:57:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-25 19:57:51,032 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-25 19:57:51,032 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-25 19:57:51,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-25 19:57:51,034 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-25 19:57:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-25 19:57:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:57:51,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:57:51,412 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:57:51,415 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:57:52,440 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:57:53,011 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:57:53,011 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:57:53,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:57:53 BoogieIcfgContainer [2021-11-25 19:57:53,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:57:53,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:57:53,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:57:53,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:57:53,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:57:49" (1/3) ... [2021-11-25 19:57:53,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4554e68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:57:53, skipping insertion in model container [2021-11-25 19:57:53,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:50" (2/3) ... [2021-11-25 19:57:53,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4554e68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:57:53, skipping insertion in model container [2021-11-25 19:57:53,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:57:53" (3/3) ... [2021-11-25 19:57:53,027 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_productSimulator.cil.c [2021-11-25 19:57:53,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:57:53,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:57:53,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:57:53,111 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:57:53,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:57:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2021-11-25 19:57:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 19:57:53,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:53,155 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:53,156 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:53,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:53,161 INFO L85 PathProgramCache]: Analyzing trace with hash -94602084, now seen corresponding path program 1 times [2021-11-25 19:57:53,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:53,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51735875] [2021-11-25 19:57:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:53,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:57:53,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:53,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51735875] [2021-11-25 19:57:53,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51735875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:53,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:53,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:57:53,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988154447] [2021-11-25 19:57:53,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:53,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:57:53,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:53,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:57:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:57:53,702 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 19:57:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:54,085 INFO L93 Difference]: Finished difference Result 732 states and 1002 transitions. [2021-11-25 19:57:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:57:54,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2021-11-25 19:57:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:54,115 INFO L225 Difference]: With dead ends: 732 [2021-11-25 19:57:54,115 INFO L226 Difference]: Without dead ends: 377 [2021-11-25 19:57:54,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:57:54,132 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 6 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:54,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1386 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:57:54,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-25 19:57:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-25 19:57:54,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.2914798206278026) internal successors, (288), 242 states have internal predecessors, (288), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-25 19:57:54,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2021-11-25 19:57:54,251 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 101 [2021-11-25 19:57:54,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:54,256 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2021-11-25 19:57:54,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 19:57:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2021-11-25 19:57:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-25 19:57:54,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:54,270 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:54,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:57:54,271 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash 318244795, now seen corresponding path program 1 times [2021-11-25 19:57:54,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:54,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211367735] [2021-11-25 19:57:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:54,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:57:54,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:54,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211367735] [2021-11-25 19:57:54,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211367735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:54,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:54,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:57:54,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535687785] [2021-11-25 19:57:54,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:54,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:54,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:54,454 INFO L87 Difference]: Start difference. First operand 377 states and 507 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 19:57:54,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:54,602 INFO L93 Difference]: Finished difference Result 727 states and 988 transitions. [2021-11-25 19:57:54,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:57:54,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 107 [2021-11-25 19:57:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:54,607 INFO L225 Difference]: With dead ends: 727 [2021-11-25 19:57:54,608 INFO L226 Difference]: Without dead ends: 377 [2021-11-25 19:57:54,614 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:57:54,615 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 474 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:54,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 457 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:57:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-25 19:57:54,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-25 19:57:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 224 states have (on average 1.2723214285714286) internal successors, (285), 241 states have internal predecessors, (285), 108 states have call successors, (108), 44 states have call predecessors, (108), 44 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-25 19:57:54,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 500 transitions. [2021-11-25 19:57:54,672 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 500 transitions. Word has length 107 [2021-11-25 19:57:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:54,675 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 500 transitions. [2021-11-25 19:57:54,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 19:57:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 500 transitions. [2021-11-25 19:57:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 19:57:54,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:54,684 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:54,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:57:54,685 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:54,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1125132462, now seen corresponding path program 1 times [2021-11-25 19:57:54,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:54,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423362409] [2021-11-25 19:57:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:54,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:57:54,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:54,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423362409] [2021-11-25 19:57:54,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423362409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:54,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:54,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:57:54,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206682011] [2021-11-25 19:57:54,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:54,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:54,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:54,879 INFO L87 Difference]: Start difference. First operand 377 states and 500 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:57:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:55,015 INFO L93 Difference]: Finished difference Result 721 states and 967 transitions. [2021-11-25 19:57:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:57:55,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 113 [2021-11-25 19:57:55,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:55,021 INFO L225 Difference]: With dead ends: 721 [2021-11-25 19:57:55,021 INFO L226 Difference]: Without dead ends: 375 [2021-11-25 19:57:55,023 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:57:55,031 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 455 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:55,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 470 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:57:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-25 19:57:55,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-11-25 19:57:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 224 states have (on average 1.2589285714285714) internal successors, (282), 239 states have internal predecessors, (282), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-25 19:57:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 493 transitions. [2021-11-25 19:57:55,076 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 493 transitions. Word has length 113 [2021-11-25 19:57:55,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:55,077 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 493 transitions. [2021-11-25 19:57:55,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:57:55,078 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 493 transitions. [2021-11-25 19:57:55,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-25 19:57:55,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:55,089 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:55,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:57:55,090 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash 177926787, now seen corresponding path program 1 times [2021-11-25 19:57:55,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:55,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752759375] [2021-11-25 19:57:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:55,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:57:55,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:55,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752759375] [2021-11-25 19:57:55,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752759375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:55,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:55,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:57:55,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356001207] [2021-11-25 19:57:55,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:55,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:55,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:55,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:55,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:55,243 INFO L87 Difference]: Start difference. First operand 375 states and 493 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:57:55,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:55,390 INFO L93 Difference]: Finished difference Result 713 states and 934 transitions. [2021-11-25 19:57:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:57:55,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 114 [2021-11-25 19:57:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:55,395 INFO L225 Difference]: With dead ends: 713 [2021-11-25 19:57:55,395 INFO L226 Difference]: Without dead ends: 378 [2021-11-25 19:57:55,397 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:57:55,402 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 436 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:55,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 453 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:57:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-25 19:57:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 372. [2021-11-25 19:57:55,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 224 states have (on average 1.2098214285714286) internal successors, (271), 234 states have internal predecessors, (271), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-25 19:57:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 476 transitions. [2021-11-25 19:57:55,440 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 476 transitions. Word has length 114 [2021-11-25 19:57:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:55,441 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 476 transitions. [2021-11-25 19:57:55,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:57:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 476 transitions. [2021-11-25 19:57:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-25 19:57:55,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:55,444 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:55,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:57:55,445 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash 13633175, now seen corresponding path program 1 times [2021-11-25 19:57:55,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:55,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710478406] [2021-11-25 19:57:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:55,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 19:57:55,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:55,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710478406] [2021-11-25 19:57:55,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710478406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:55,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:55,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:57:55,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386625973] [2021-11-25 19:57:55,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:55,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:55,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:55,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:55,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:55,575 INFO L87 Difference]: Start difference. First operand 372 states and 476 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:57:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:55,714 INFO L93 Difference]: Finished difference Result 589 states and 747 transitions. [2021-11-25 19:57:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:57:55,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 126 [2021-11-25 19:57:55,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:55,720 INFO L225 Difference]: With dead ends: 589 [2021-11-25 19:57:55,721 INFO L226 Difference]: Without dead ends: 374 [2021-11-25 19:57:55,722 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:57:55,724 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 0 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:55,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 847 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:57:55,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-25 19:57:55,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-25 19:57:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 226 states have (on average 1.2079646017699115) internal successors, (273), 236 states have internal predecessors, (273), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-25 19:57:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 478 transitions. [2021-11-25 19:57:55,755 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 478 transitions. Word has length 126 [2021-11-25 19:57:55,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:55,756 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 478 transitions. [2021-11-25 19:57:55,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:57:55,756 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 478 transitions. [2021-11-25 19:57:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 19:57:55,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:55,760 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:55,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:57:55,760 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:55,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:55,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1914407031, now seen corresponding path program 1 times [2021-11-25 19:57:55,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:55,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825346333] [2021-11-25 19:57:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:55,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 19:57:55,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:55,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825346333] [2021-11-25 19:57:55,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825346333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:55,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:55,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:57:55,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739611513] [2021-11-25 19:57:55,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:55,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:55,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:55,856 INFO L87 Difference]: Start difference. First operand 374 states and 478 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:57:55,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:55,991 INFO L93 Difference]: Finished difference Result 748 states and 980 transitions. [2021-11-25 19:57:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:57:55,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 131 [2021-11-25 19:57:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:55,996 INFO L225 Difference]: With dead ends: 748 [2021-11-25 19:57:55,996 INFO L226 Difference]: Without dead ends: 441 [2021-11-25 19:57:55,998 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:57:55,999 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 76 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:57:56,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 861 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:57:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-25 19:57:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 436. [2021-11-25 19:57:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 274 states have (on average 1.2518248175182483) internal successors, (343), 284 states have internal predecessors, (343), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116) [2021-11-25 19:57:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 576 transitions. [2021-11-25 19:57:56,032 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 576 transitions. Word has length 131 [2021-11-25 19:57:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:56,034 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 576 transitions. [2021-11-25 19:57:56,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:57:56,035 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 576 transitions. [2021-11-25 19:57:56,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 19:57:56,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:56,038 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:56,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:57:56,038 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:56,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:56,039 INFO L85 PathProgramCache]: Analyzing trace with hash 405896975, now seen corresponding path program 1 times [2021-11-25 19:57:56,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:56,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142411057] [2021-11-25 19:57:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:56,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 19:57:56,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142411057] [2021-11-25 19:57:56,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142411057] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627074654] [2021-11-25 19:57:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:56,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:56,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:56,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:56,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:57:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:56,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:57:56,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 19:57:56,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:57:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 19:57:57,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627074654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:57:57,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1007037560] [2021-11-25 19:57:57,281 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2021-11-25 19:57:57,281 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:57:57,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:57:57,292 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:57:57,292 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:59:11,436 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 693 for LOIs [2021-11-25 19:59:12,548 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2021-11-25 19:59:13,847 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 275 for LOIs [2021-11-25 19:59:15,578 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 725 for LOIs [2021-11-25 19:59:16,218 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2021-11-25 19:59:16,981 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2021-11-25 19:59:17,223 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 245 for LOIs [2021-11-25 19:59:17,268 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2021-11-25 19:59:17,502 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 277 for LOIs [2021-11-25 19:59:19,113 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2021-11-25 19:59:19,293 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 289 for LOIs [2021-11-25 19:59:19,493 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 289 for LOIs [2021-11-25 19:59:24,440 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 445 for LOIs [2021-11-25 19:59:24,902 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 422 for LOIs [2021-11-25 19:59:25,348 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 255 for LOIs [2021-11-25 19:59:25,395 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:59:37,164 WARN L227 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 725 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:59:44,258 WARN L227 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 733 DAG size of output: 253 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:00:51,033 WARN L227 SmtUtils]: Spent 9.32s on a formula simplification. DAG size of input: 732 DAG size of output: 575 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:04,893 WARN L227 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 721 DAG size of output: 515 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:16,456 WARN L227 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 727 DAG size of output: 610 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:24,893 WARN L227 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 731 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:31,800 WARN L227 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 693 DAG size of output: 524 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:47,571 WARN L227 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 512 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:01:58,610 WARN L227 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 558 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:02:04,304 WARN L227 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 557 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:02:36,350 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 445 DAG size of output: 276 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:02:44,732 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 471 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:03:28,628 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11440#(and (<= |outgoing__before__Encrypt_getClientId_#in~handle#1| 1) (= ~__ste_Client_Keyring1_User2~0 0) (<= ~__SELECTED_FEATURE_Keys~0 2147483647) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= ~__SELECTED_FEATURE_Base~0 2147483647) (<= |outgoing__before__Encrypt_mail_#in~msg#1| 1) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing__before__Encrypt_mail_#in~client#1| 1) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= 0 (+ |outgoing__before__Encrypt_getClientId_~retValue_acc~22#1| 2147483648)) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (<= 0 (+ ~__SELECTED_FEATURE_Keys~0 2147483648)) (<= |outgoing__before__Encrypt_~client#1| 1) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= |outgoing__before__Encrypt_mail_~client#1| 1) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (<= 1 |outgoing__before__Encrypt_mail_#in~client#1|) (<= |old(~queued_client~0)| 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 1 |outgoing__before__Encrypt_getClientId_~handle#1|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_#in~client#1| 1) (= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~tmp~27#1| ~__ste_client_privateKey0~0) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (<= 1 |outgoing__before__Encrypt_mail_#in~msg#1|) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= |outgoing__before__Encrypt_mail_~__utac__ad__arg2~0#1| 1) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (<= 1 |outgoing__before__Encrypt_~msg#1|) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= |outgoing__before__Encrypt_#in~msg#1| 1) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (<= 1 |outgoing__before__Encrypt_mail_~__utac__ad__arg2~0#1|) (not (= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~10#1| 0)) (<= 1 |outgoing__before__Encrypt_#in~msg#1|) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= 0 (+ ~__SELECTED_FEATURE_Base~0 2147483648)) (= ~__SELECTED_FEATURE_Sign~0 1) (<= 1 |outgoing__before__Encrypt_#in~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= 1 |outgoing__before__Encrypt_mail_~client#1|) (<= |outgoing__before__Encrypt_~msg#1| 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~client#1| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |outgoing__before__Encrypt_~tmp~2#1| 2147483647) (<= |outgoing__before__Encrypt_#in~client#1| 1) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= 1 |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~msg#1|) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_#in~msg#1| 1) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 1 |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_email_isEncrypted1~0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~tmp~27#1| 0) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 1 |outgoing__before__Encrypt_getClientId_#in~handle#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing__before__Encrypt_mail_~msg#1|) (= ~__ste_Client_Keyring2_User1~0 0) (<= 1 |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_#in~msg#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (= ~__GUIDSL_ROOT_PRODUCTION~0 1) (<= ~__ste_email_signKey1~0 0) (<= 0 |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~10#1|) (<= ~__ste_email_isSigned1~0 0) (= ~bob~0 1) (<= |outgoing__before__Encrypt_getClientId_~handle#1| 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 1 |outgoing__before__Encrypt_~client#1|) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= ~__SELECTED_FEATURE_AutoResponder~0 2147483647) (= ~__ste_client_outbuffer0~0 0) (<= 0 (+ ~__SELECTED_FEATURE_AutoResponder~0 2147483648)) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~10#1| 1) (<= 1 |outgoing__before__Encrypt_mail_~__utac__ad__arg1~0#1|) (<= 0 (+ |outgoing__before__Encrypt_~tmp~2#1| 2147483648)) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (<= |outgoing__before__Encrypt_mail_~msg#1| 1) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing__before__Encrypt_mail_~__utac__ad__arg1~0#1| 1) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 0 (+ 2147483648 |outgoing__before__Encrypt_getClientId_#res#1|)) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= ~__SELECTED_FEATURE_Forward~0 2147483647) (<= |outgoing__before__Encrypt_getClientId_#res#1| 2147483647) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (<= |outgoing__before__Encrypt_getClientId_~retValue_acc~22#1| 2147483647) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 (+ ~__SELECTED_FEATURE_Forward~0 2147483648)) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= 1 |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_#in~client#1|) (<= |outgoing__before__Encrypt___utac_acc__SignForward_spec__1_~msg#1| 1) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= ~__SELECTED_FEATURE_Verify~0 2147483647) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_body1~0.base 0) (<= 0 (+ ~__SELECTED_FEATURE_Verify~0 2147483648)) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2021-11-25 20:03:28,628 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:03:28,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:03:28,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-25 20:03:28,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266905913] [2021-11-25 20:03:28,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:03:28,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:03:28,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:28,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:03:28,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=8408, Unknown=0, NotChecked=0, Total=8742 [2021-11-25 20:03:28,635 INFO L87 Difference]: Start difference. First operand 436 states and 576 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 20:03:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:28,978 INFO L93 Difference]: Finished difference Result 1002 states and 1393 transitions. [2021-11-25 20:03:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:03:28,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 132 [2021-11-25 20:03:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:28,987 INFO L225 Difference]: With dead ends: 1002 [2021-11-25 20:03:28,987 INFO L226 Difference]: Without dead ends: 787 [2021-11-25 20:03:28,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 302 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3579 ImplicationChecksByTransitivity, 243.2s TimeCoverageRelationStatistics Valid=334, Invalid=8408, Unknown=0, NotChecked=0, Total=8742 [2021-11-25 20:03:28,992 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 408 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:28,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1600 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:03:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-11-25 20:03:29,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 772. [2021-11-25 20:03:29,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 531 states have (on average 1.3370998116760828) internal successors, (710), 541 states have internal predecessors, (710), 196 states have call successors, (196), 44 states have call predecessors, (196), 44 states have return successors, (195), 194 states have call predecessors, (195), 195 states have call successors, (195) [2021-11-25 20:03:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1101 transitions. [2021-11-25 20:03:29,049 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1101 transitions. Word has length 132 [2021-11-25 20:03:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:29,051 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 1101 transitions. [2021-11-25 20:03:29,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 20:03:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1101 transitions. [2021-11-25 20:03:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 20:03:29,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:29,055 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:29,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 20:03:29,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7987596-939f-4df5-b3e9-207b35f4272d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 20:03:29,282 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:29,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:29,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1387198780, now seen corresponding path program 1 times [2021-11-25 20:03:29,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:29,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272810905] [2021-11-25 20:03:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:29,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:29,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:29,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272810905] [2021-11-25 20:03:29,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272810905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:29,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:29,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:29,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466350303] [2021-11-25 20:03:29,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:29,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:29,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:29,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:29,369 INFO L87 Difference]: Start difference. First operand 772 states and 1101 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:29,521 INFO L93 Difference]: Finished difference Result 1799 states and 2621 transitions. [2021-11-25 20:03:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 138 [2021-11-25 20:03:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:29,531 INFO L225 Difference]: With dead ends: 1799 [2021-11-25 20:03:29,531 INFO L226 Difference]: Without dead ends: 1110 [2021-11-25 20:03:29,533 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:03:29,534 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 74 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:29,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 876 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:03:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-25 20:03:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1105. [2021-11-25 20:03:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 785 states have (on average 1.3554140127388534) internal successors, (1064), 795 states have internal predecessors, (1064), 275 states have call successors, (275), 44 states have call predecessors, (275), 44 states have return successors, (274), 273 states have call predecessors, (274), 274 states have call successors, (274) [2021-11-25 20:03:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1613 transitions. [2021-11-25 20:03:29,604 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1613 transitions. Word has length 138 [2021-11-25 20:03:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:29,605 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 1613 transitions. [2021-11-25 20:03:29,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1613 transitions. [2021-11-25 20:03:29,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-25 20:03:29,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:29,612 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:29,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:03:29,612 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:29,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:29,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1267569292, now seen corresponding path program 1 times [2021-11-25 20:03:29,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:29,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414703027] [2021-11-25 20:03:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:29,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:29,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:29,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414703027] [2021-11-25 20:03:29,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414703027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:29,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:29,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:29,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965994281] [2021-11-25 20:03:29,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:29,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:29,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:29,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:29,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:29,702 INFO L87 Difference]: Start difference. First operand 1105 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:29,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:29,873 INFO L93 Difference]: Finished difference Result 2593 states and 3853 transitions. [2021-11-25 20:03:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:29,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 139 [2021-11-25 20:03:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:29,885 INFO L225 Difference]: With dead ends: 2593 [2021-11-25 20:03:29,885 INFO L226 Difference]: Without dead ends: 1611 [2021-11-25 20:03:29,891 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:03:29,893 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 72 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:29,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 856 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:03:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-11-25 20:03:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1606. [2021-11-25 20:03:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1167 states have (on average 1.3693230505569838) internal successors, (1598), 1177 states have internal predecessors, (1598), 394 states have call successors, (394), 44 states have call predecessors, (394), 44 states have return successors, (393), 392 states have call predecessors, (393), 393 states have call successors, (393) [2021-11-25 20:03:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2385 transitions. [2021-11-25 20:03:29,998 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2385 transitions. Word has length 139 [2021-11-25 20:03:29,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:29,999 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 2385 transitions. [2021-11-25 20:03:29,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:29,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2385 transitions. [2021-11-25 20:03:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-25 20:03:30,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:30,007 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:30,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:03:30,007 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:30,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1787407101, now seen corresponding path program 1 times [2021-11-25 20:03:30,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:30,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719376596] [2021-11-25 20:03:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:30,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:30,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:30,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719376596] [2021-11-25 20:03:30,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719376596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:30,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:30,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:30,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394377302] [2021-11-25 20:03:30,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:30,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:30,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:30,089 INFO L87 Difference]: Start difference. First operand 1606 states and 2385 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:30,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:30,303 INFO L93 Difference]: Finished difference Result 3746 states and 5636 transitions. [2021-11-25 20:03:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:30,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 140 [2021-11-25 20:03:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:30,321 INFO L225 Difference]: With dead ends: 3746 [2021-11-25 20:03:30,321 INFO L226 Difference]: Without dead ends: 2361 [2021-11-25 20:03:30,326 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:03:30,327 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 70 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:30,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 851 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:03:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2021-11-25 20:03:30,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2356. [2021-11-25 20:03:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 1755 states have (on average 1.3794871794871795) internal successors, (2421), 1765 states have internal predecessors, (2421), 556 states have call successors, (556), 44 states have call predecessors, (556), 44 states have return successors, (555), 554 states have call predecessors, (555), 555 states have call successors, (555) [2021-11-25 20:03:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3532 transitions. [2021-11-25 20:03:30,489 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3532 transitions. Word has length 140 [2021-11-25 20:03:30,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:30,490 INFO L470 AbstractCegarLoop]: Abstraction has 2356 states and 3532 transitions. [2021-11-25 20:03:30,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3532 transitions. [2021-11-25 20:03:30,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-25 20:03:30,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:30,500 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:30,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:03:30,501 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:30,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash -995418836, now seen corresponding path program 1 times [2021-11-25 20:03:30,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:30,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024176593] [2021-11-25 20:03:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:30,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:30,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:30,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024176593] [2021-11-25 20:03:30,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024176593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:30,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:30,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:30,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342725276] [2021-11-25 20:03:30,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:30,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:30,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:30,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:30,585 INFO L87 Difference]: Start difference. First operand 2356 states and 3532 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:30,867 INFO L93 Difference]: Finished difference Result 5513 states and 8361 transitions. [2021-11-25 20:03:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:30,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2021-11-25 20:03:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:30,892 INFO L225 Difference]: With dead ends: 5513 [2021-11-25 20:03:30,892 INFO L226 Difference]: Without dead ends: 3549 [2021-11-25 20:03:30,900 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:03:30,901 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 68 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:30,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 851 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:03:30,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2021-11-25 20:03:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 3544. [2021-11-25 20:03:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 2698 states have (on average 1.3873239436619718) internal successors, (3743), 2708 states have internal predecessors, (3743), 801 states have call successors, (801), 44 states have call predecessors, (801), 44 states have return successors, (800), 799 states have call predecessors, (800), 800 states have call successors, (800) [2021-11-25 20:03:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 5344 transitions. [2021-11-25 20:03:31,170 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 5344 transitions. Word has length 141 [2021-11-25 20:03:31,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:31,174 INFO L470 AbstractCegarLoop]: Abstraction has 3544 states and 5344 transitions. [2021-11-25 20:03:31,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 5344 transitions. [2021-11-25 20:03:31,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-25 20:03:31,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:31,186 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:31,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:03:31,186 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:31,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:31,187 INFO L85 PathProgramCache]: Analyzing trace with hash -652374712, now seen corresponding path program 1 times [2021-11-25 20:03:31,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:31,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426532730] [2021-11-25 20:03:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:31,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:31,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:31,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426532730] [2021-11-25 20:03:31,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426532730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:31,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:31,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:31,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770426579] [2021-11-25 20:03:31,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:31,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:31,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:31,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:31,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:31,271 INFO L87 Difference]: Start difference. First operand 3544 states and 5344 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:31,622 INFO L93 Difference]: Finished difference Result 8747 states and 13300 transitions. [2021-11-25 20:03:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 142 [2021-11-25 20:03:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:31,662 INFO L225 Difference]: With dead ends: 8747 [2021-11-25 20:03:31,662 INFO L226 Difference]: Without dead ends: 5762 [2021-11-25 20:03:31,672 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:03:31,674 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 66 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:31,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 873 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:03:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2021-11-25 20:03:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 5757. [2021-11-25 20:03:32,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5757 states, 4418 states have (on average 1.3813942960615664) internal successors, (6103), 4428 states have internal predecessors, (6103), 1294 states have call successors, (1294), 44 states have call predecessors, (1294), 44 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) [2021-11-25 20:03:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5757 states to 5757 states and 8690 transitions. [2021-11-25 20:03:32,144 INFO L78 Accepts]: Start accepts. Automaton has 5757 states and 8690 transitions. Word has length 142 [2021-11-25 20:03:32,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:32,145 INFO L470 AbstractCegarLoop]: Abstraction has 5757 states and 8690 transitions. [2021-11-25 20:03:32,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:32,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5757 states and 8690 transitions. [2021-11-25 20:03:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-25 20:03:32,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:32,164 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:32,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:03:32,165 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:32,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:32,165 INFO L85 PathProgramCache]: Analyzing trace with hash 445172449, now seen corresponding path program 1 times [2021-11-25 20:03:32,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:32,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496261789] [2021-11-25 20:03:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:32,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:32,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:32,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496261789] [2021-11-25 20:03:32,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496261789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:32,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:32,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:32,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753481056] [2021-11-25 20:03:32,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:32,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:32,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:32,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:32,240 INFO L87 Difference]: Start difference. First operand 5757 states and 8690 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:32,857 INFO L93 Difference]: Finished difference Result 14311 states and 21844 transitions. [2021-11-25 20:03:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:32,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 143 [2021-11-25 20:03:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:32,932 INFO L225 Difference]: With dead ends: 14311 [2021-11-25 20:03:32,932 INFO L226 Difference]: Without dead ends: 9463 [2021-11-25 20:03:32,948 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:03:32,949 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 64 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:32,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 856 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:03:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9463 states. [2021-11-25 20:03:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9463 to 9458. [2021-11-25 20:03:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9458 states, 7297 states have (on average 1.3846786350555023) internal successors, (10104), 7307 states have internal predecessors, (10104), 2116 states have call successors, (2116), 44 states have call predecessors, (2116), 44 states have return successors, (2115), 2114 states have call predecessors, (2115), 2115 states have call successors, (2115) [2021-11-25 20:03:33,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9458 states to 9458 states and 14335 transitions. [2021-11-25 20:03:33,646 INFO L78 Accepts]: Start accepts. Automaton has 9458 states and 14335 transitions. Word has length 143 [2021-11-25 20:03:33,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:33,646 INFO L470 AbstractCegarLoop]: Abstraction has 9458 states and 14335 transitions. [2021-11-25 20:03:33,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:33,647 INFO L276 IsEmpty]: Start isEmpty. Operand 9458 states and 14335 transitions. [2021-11-25 20:03:33,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-25 20:03:33,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:33,666 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:33,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:03:33,666 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:33,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:33,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1486557985, now seen corresponding path program 1 times [2021-11-25 20:03:33,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:33,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884211169] [2021-11-25 20:03:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:33,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:33,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:33,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884211169] [2021-11-25 20:03:33,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884211169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:33,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:33,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:33,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286050204] [2021-11-25 20:03:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:33,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:33,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:33,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:33,762 INFO L87 Difference]: Start difference. First operand 9458 states and 14335 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:34,618 INFO L93 Difference]: Finished difference Result 23684 states and 36055 transitions. [2021-11-25 20:03:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:34,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 144 [2021-11-25 20:03:34,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:34,692 INFO L225 Difference]: With dead ends: 23684 [2021-11-25 20:03:34,692 INFO L226 Difference]: Without dead ends: 15675 [2021-11-25 20:03:34,719 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:03:34,719 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 62 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:34,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 866 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:03:34,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15675 states. [2021-11-25 20:03:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15675 to 15670. [2021-11-25 20:03:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15670 states, 12306 states have (on average 1.3808711197789696) internal successors, (16993), 12316 states have internal predecessors, (16993), 3319 states have call successors, (3319), 44 states have call predecessors, (3319), 44 states have return successors, (3318), 3317 states have call predecessors, (3318), 3318 states have call successors, (3318) [2021-11-25 20:03:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15670 states to 15670 states and 23630 transitions. [2021-11-25 20:03:35,768 INFO L78 Accepts]: Start accepts. Automaton has 15670 states and 23630 transitions. Word has length 144 [2021-11-25 20:03:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:35,770 INFO L470 AbstractCegarLoop]: Abstraction has 15670 states and 23630 transitions. [2021-11-25 20:03:35,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 15670 states and 23630 transitions. [2021-11-25 20:03:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-25 20:03:35,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:35,792 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:35,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:03:35,792 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:35,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:35,793 INFO L85 PathProgramCache]: Analyzing trace with hash -656810631, now seen corresponding path program 1 times [2021-11-25 20:03:35,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:35,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934554590] [2021-11-25 20:03:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:35,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:35,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:35,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934554590] [2021-11-25 20:03:35,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934554590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:35,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:35,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:35,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220458374] [2021-11-25 20:03:35,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:35,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:35,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:35,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:35,874 INFO L87 Difference]: Start difference. First operand 15670 states and 23630 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:37,118 INFO L93 Difference]: Finished difference Result 41291 states and 62657 transitions. [2021-11-25 20:03:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:37,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 145 [2021-11-25 20:03:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:37,239 INFO L225 Difference]: With dead ends: 41291 [2021-11-25 20:03:37,239 INFO L226 Difference]: Without dead ends: 27629 [2021-11-25 20:03:37,290 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:03:37,291 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 60 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:37,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 857 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:03:37,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27629 states. [2021-11-25 20:03:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27629 to 27624. [2021-11-25 20:03:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27624 states, 21810 states have (on average 1.3775790921595599) internal successors, (30045), 21820 states have internal predecessors, (30045), 5769 states have call successors, (5769), 44 states have call predecessors, (5769), 44 states have return successors, (5768), 5767 states have call predecessors, (5768), 5768 states have call successors, (5768) [2021-11-25 20:03:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27624 states to 27624 states and 41582 transitions. [2021-11-25 20:03:39,194 INFO L78 Accepts]: Start accepts. Automaton has 27624 states and 41582 transitions. Word has length 145 [2021-11-25 20:03:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:39,195 INFO L470 AbstractCegarLoop]: Abstraction has 27624 states and 41582 transitions. [2021-11-25 20:03:39,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 27624 states and 41582 transitions. [2021-11-25 20:03:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-25 20:03:39,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:39,218 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:39,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:03:39,219 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:39,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1849094834, now seen corresponding path program 1 times [2021-11-25 20:03:39,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:39,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666048833] [2021-11-25 20:03:39,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:39,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:39,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:39,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666048833] [2021-11-25 20:03:39,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666048833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:39,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:39,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:39,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447861007] [2021-11-25 20:03:39,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:39,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:39,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:39,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:39,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:39,300 INFO L87 Difference]: Start difference. First operand 27624 states and 41582 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:41,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:41,376 INFO L93 Difference]: Finished difference Result 74213 states and 112539 transitions. [2021-11-25 20:03:41,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:41,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 146 [2021-11-25 20:03:41,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:41,575 INFO L225 Difference]: With dead ends: 74213 [2021-11-25 20:03:41,575 INFO L226 Difference]: Without dead ends: 49380 [2021-11-25 20:03:41,628 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:03:41,629 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 58 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:41,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 856 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:03:41,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49380 states. [2021-11-25 20:03:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49380 to 49375. [2021-11-25 20:03:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49375 states, 39048 states have (on average 1.3769719319811513) internal successors, (53768), 39058 states have internal predecessors, (53768), 10282 states have call successors, (10282), 44 states have call predecessors, (10282), 44 states have return successors, (10281), 10280 states have call predecessors, (10281), 10281 states have call successors, (10281) [2021-11-25 20:03:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49375 states to 49375 states and 74331 transitions. [2021-11-25 20:03:44,855 INFO L78 Accepts]: Start accepts. Automaton has 49375 states and 74331 transitions. Word has length 146 [2021-11-25 20:03:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:44,856 INFO L470 AbstractCegarLoop]: Abstraction has 49375 states and 74331 transitions. [2021-11-25 20:03:44,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 49375 states and 74331 transitions. [2021-11-25 20:03:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-25 20:03:44,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:44,881 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:44,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:03:44,882 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:44,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1411438067, now seen corresponding path program 1 times [2021-11-25 20:03:44,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:44,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487730209] [2021-11-25 20:03:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:44,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:44,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:44,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487730209] [2021-11-25 20:03:44,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487730209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:44,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:44,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:44,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643998651] [2021-11-25 20:03:44,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:44,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:44,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:44,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:44,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:44,960 INFO L87 Difference]: Start difference. First operand 49375 states and 74331 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:48,665 INFO L93 Difference]: Finished difference Result 90883 states and 137203 transitions. [2021-11-25 20:03:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:48,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 147 [2021-11-25 20:03:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:49,023 INFO L225 Difference]: With dead ends: 90883 [2021-11-25 20:03:49,024 INFO L226 Difference]: Without dead ends: 90668 [2021-11-25 20:03:49,053 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:03:49,054 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 56 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:49,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 857 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:03:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90668 states. [2021-11-25 20:03:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90668 to 90663. [2021-11-25 20:03:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90663 states, 71968 states have (on average 1.3691918630502447) internal successors, (98538), 71978 states have internal predecessors, (98538), 18650 states have call successors, (18650), 44 states have call predecessors, (18650), 44 states have return successors, (18649), 18648 states have call predecessors, (18649), 18649 states have call successors, (18649) [2021-11-25 20:03:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90663 states to 90663 states and 135837 transitions. [2021-11-25 20:03:54,410 INFO L78 Accepts]: Start accepts. Automaton has 90663 states and 135837 transitions. Word has length 147 [2021-11-25 20:03:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:54,411 INFO L470 AbstractCegarLoop]: Abstraction has 90663 states and 135837 transitions. [2021-11-25 20:03:54,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:03:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 90663 states and 135837 transitions. [2021-11-25 20:03:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-25 20:03:54,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:54,451 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:03:54,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 20:03:54,452 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:03:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:54,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1992303018, now seen corresponding path program 1 times [2021-11-25 20:03:54,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:54,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620100446] [2021-11-25 20:03:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:54,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:03:55,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:55,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620100446] [2021-11-25 20:03:55,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620100446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:55,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:55,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-25 20:03:55,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496484369] [2021-11-25 20:03:55,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:55,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-25 20:03:55,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:55,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-25 20:03:55,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-11-25 20:03:55,036 INFO L87 Difference]: Start difference. First operand 90663 states and 135837 transitions. Second operand has 26 states, 19 states have (on average 4.421052631578948) internal successors, (84), 18 states have internal predecessors, (84), 12 states have call successors, (28), 6 states have call predecessors, (28), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2021-11-25 20:04:01,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:01,459 INFO L93 Difference]: Finished difference Result 90788 states and 136022 transitions. [2021-11-25 20:04:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-25 20:04:01,459 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 4.421052631578948) internal successors, (84), 18 states have internal predecessors, (84), 12 states have call successors, (28), 6 states have call predecessors, (28), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) Word has length 148 [2021-11-25 20:04:01,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:02,030 INFO L225 Difference]: With dead ends: 90788 [2021-11-25 20:04:02,030 INFO L226 Difference]: Without dead ends: 90780 [2021-11-25 20:04:02,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=1611, Unknown=0, NotChecked=0, Total=1806 [2021-11-25 20:04:02,051 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 426 mSDsluCounter, 8155 mSDsCounter, 0 mSdLazyCounter, 4050 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 7688 SdHoareTripleChecker+Invalid, 4221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 4050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:02,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 7688 Invalid, 4221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 4050 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 20:04:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90780 states. [2021-11-25 20:04:06,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90780 to 90736. [2021-11-25 20:04:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90736 states, 72006 states have (on average 1.3691220176096437) internal successors, (98585), 72022 states have internal predecessors, (98585), 18680 states have call successors, (18680), 51 states have call predecessors, (18680), 49 states have return successors, (18675), 18674 states have call predecessors, (18675), 18675 states have call successors, (18675) [2021-11-25 20:04:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90736 states to 90736 states and 135940 transitions. [2021-11-25 20:04:07,053 INFO L78 Accepts]: Start accepts. Automaton has 90736 states and 135940 transitions. Word has length 148 [2021-11-25 20:04:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:07,054 INFO L470 AbstractCegarLoop]: Abstraction has 90736 states and 135940 transitions. [2021-11-25 20:04:07,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 4.421052631578948) internal successors, (84), 18 states have internal predecessors, (84), 12 states have call successors, (28), 6 states have call predecessors, (28), 3 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2021-11-25 20:04:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 90736 states and 135940 transitions. [2021-11-25 20:04:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-25 20:04:07,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:07,095 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:04:07,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 20:04:07,096 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:04:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash -53854100, now seen corresponding path program 1 times [2021-11-25 20:04:07,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:07,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601805817] [2021-11-25 20:04:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:07,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 20:04:07,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:07,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601805817] [2021-11-25 20:04:07,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601805817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:07,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:07,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-25 20:04:07,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496892864] [2021-11-25 20:04:07,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:07,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 20:04:07,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:07,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 20:04:07,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:04:07,754 INFO L87 Difference]: Start difference. First operand 90736 states and 135940 transitions. Second operand has 27 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 12 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2021-11-25 20:04:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:13,787 INFO L93 Difference]: Finished difference Result 90851 states and 136120 transitions. [2021-11-25 20:04:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 20:04:13,787 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 20 states have (on average 4.35) internal successors, (87), 19 states have internal predecessors, (87), 12 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 153 [2021-11-25 20:04:13,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:14,024 INFO L225 Difference]: With dead ends: 90851 [2021-11-25 20:04:14,024 INFO L226 Difference]: Without dead ends: 90849 [2021-11-25 20:04:14,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-11-25 20:04:14,048 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 421 mSDsluCounter, 7243 mSDsCounter, 0 mSdLazyCounter, 3679 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 6885 SdHoareTripleChecker+Invalid, 3862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 3679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:14,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 6885 Invalid, 3862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 3679 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 20:04:14,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90849 states.