./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --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 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:21:28,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:21:28,592 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:21:28,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:21:28,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:21:28,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:21:28,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:21:28,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:21:28,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:21:28,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:21:28,675 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:21:28,689 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:21:28,690 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:21:28,692 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:21:28,693 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:21:28,693 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:21:28,693 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:21:28,694 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:21:28,694 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:21:28,695 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:21:28,695 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:21:28,696 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:21:28,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:21:28,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:21:28,698 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:21:28,698 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:21:28,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:21:28,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:21:28,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:21:28,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:21:28,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:21:28,702 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:21:28,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:21:28,702 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:21:28,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:21:28,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:21:28,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:21:28,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:28,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:21:28,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:21:28,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:21:28,706 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:21:28,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:21:28,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:21:28,707 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:21:28,707 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:21:28,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:21:28,708 INFO L153 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_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d8908adfa5a1758f016a2fa64af2c05db2b3cc5d1fb9ac5b8aa70e5689b8434 [2023-11-23 21:21:28,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:21:29,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:21:29,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:21:29,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:21:29,025 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:21:29,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2023-11-23 21:21:32,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:21:32,636 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:21:32,637 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c [2023-11-23 21:21:32,688 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/data/bba306789/03eb527f8ef644ca81d448985bfe853a/FLAGe8d57bf78 [2023-11-23 21:21:32,705 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/data/bba306789/03eb527f8ef644ca81d448985bfe853a [2023-11-23 21:21:32,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:21:32,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:21:32,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:32,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:21:32,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:21:32,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:32" (1/1) ... [2023-11-23 21:21:32,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c67df67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:32, skipping insertion in model container [2023-11-23 21:21:32,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:32" (1/1) ... [2023-11-23 21:21:32,835 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:21:33,623 WARN L240 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_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2023-11-23 21:21:33,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:33,664 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:21:33,678 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [48] [2023-11-23 21:21:33,680 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [642] [2023-11-23 21:21:33,680 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1041] [2023-11-23 21:21:33,680 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptVerify_spec.i","") [1416] [2023-11-23 21:21:33,681 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1435] [2023-11-23 21:21:33,681 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1639] [2023-11-23 21:21:33,681 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2699] [2023-11-23 21:21:33,681 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2965] [2023-11-23 21:21:33,682 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3072] [2023-11-23 21:21:33,682 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3089] [2023-11-23 21:21:33,682 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3455] [2023-11-23 21:21:33,879 WARN L240 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_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/sv-benchmarks/c/product-lines/email_spec7_productSimulator.cil.c[72622,72635] [2023-11-23 21:21:33,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:33,921 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:33,930 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:21:33,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33 WrapperNode [2023-11-23 21:21:33,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:33,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:33,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:21:33,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:21:33,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,117 INFO L138 Inliner]: procedures = 151, calls = 280, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1309 [2023-11-23 21:21:34,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:34,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:21:34,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:21:34,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:21:34,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:21:34,260 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:21:34,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:21:34,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:21:34,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (1/1) ... [2023-11-23 21:21:34,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:34,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:21:34,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:21:34,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:21:34,379 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-23 21:21:34,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-23 21:21:34,380 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2023-11-23 21:21:34,381 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2023-11-23 21:21:34,381 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2023-11-23 21:21:34,381 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2023-11-23 21:21:34,382 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-23 21:21:34,382 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-23 21:21:34,382 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-23 21:21:34,382 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-23 21:21:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-23 21:21:34,383 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-23 21:21:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-23 21:21:34,384 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-23 21:21:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2023-11-23 21:21:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2023-11-23 21:21:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-23 21:21:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-23 21:21:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2023-11-23 21:21:34,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2023-11-23 21:21:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-23 21:21:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-23 21:21:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-23 21:21:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-23 21:21:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-23 21:21:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-23 21:21:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2023-11-23 21:21:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2023-11-23 21:21:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2023-11-23 21:21:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2023-11-23 21:21:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-23 21:21:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-23 21:21:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-23 21:21:34,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-23 21:21:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-23 21:21:34,390 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-23 21:21:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-23 21:21:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2023-11-23 21:21:34,390 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2023-11-23 21:21:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-23 21:21:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-23 21:21:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-23 21:21:34,391 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-23 21:21:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-23 21:21:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-23 21:21:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2023-11-23 21:21:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2023-11-23 21:21:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:21:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-23 21:21:34,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-23 21:21:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-23 21:21:34,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-23 21:21:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2023-11-23 21:21:34,395 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2023-11-23 21:21:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2023-11-23 21:21:34,395 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2023-11-23 21:21:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2023-11-23 21:21:34,396 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2023-11-23 21:21:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-23 21:21:34,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-23 21:21:34,397 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-23 21:21:34,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-23 21:21:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-23 21:21:34,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-23 21:21:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-23 21:21:34,398 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-23 21:21:34,398 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-23 21:21:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-23 21:21:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-23 21:21:34,399 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-23 21:21:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-23 21:21:34,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-23 21:21:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2023-11-23 21:21:34,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2023-11-23 21:21:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2023-11-23 21:21:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2023-11-23 21:21:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-23 21:21:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-23 21:21:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-23 21:21:34,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-23 21:21:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:21:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-23 21:21:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-23 21:21:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2023-11-23 21:21:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2023-11-23 21:21:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-11-23 21:21:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-11-23 21:21:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-23 21:21:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-23 21:21:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:21:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:21:34,658 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:21:34,661 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:21:35,835 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:21:36,688 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:21:36,689 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:21:36,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:36 BoogieIcfgContainer [2023-11-23 21:21:36,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:21:36,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:21:36,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:21:36,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:21:36,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:21:32" (1/3) ... [2023-11-23 21:21:36,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbe5e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:21:36, skipping insertion in model container [2023-11-23 21:21:36,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:33" (2/3) ... [2023-11-23 21:21:36,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbe5e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:21:36, skipping insertion in model container [2023-11-23 21:21:36,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:36" (3/3) ... [2023-11-23 21:21:36,703 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_productSimulator.cil.c [2023-11-23 21:21:36,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:21:36,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:21:36,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:21:36,830 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e5ae1ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:21:36,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:21:36,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-23 21:21:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 21:21:36,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:36,877 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:36,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:36,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:36,885 INFO L85 PathProgramCache]: Analyzing trace with hash 118678989, now seen corresponding path program 1 times [2023-11-23 21:21:36,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:36,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496573761] [2023-11-23 21:21:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:36,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:21:37,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:37,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496573761] [2023-11-23 21:21:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496573761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:37,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:37,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:21:37,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535750291] [2023-11-23 21:21:37,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:37,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:21:37,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:21:37,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:21:37,657 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:21:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:38,027 INFO L93 Difference]: Finished difference Result 723 states and 993 transitions. [2023-11-23 21:21:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:21:38,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 110 [2023-11-23 21:21:38,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:38,044 INFO L225 Difference]: With dead ends: 723 [2023-11-23 21:21:38,045 INFO L226 Difference]: Without dead ends: 374 [2023-11-23 21:21:38,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:21:38,055 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:38,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1370 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:21:38,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-23 21:21:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-23 21:21:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.2895927601809956) internal successors, (285), 240 states have internal predecessors, (285), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-23 21:21:38,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2023-11-23 21:21:38,154 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 110 [2023-11-23 21:21:38,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:38,156 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2023-11-23 21:21:38,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:21:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2023-11-23 21:21:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 21:21:38,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:38,165 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:38,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:21:38,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:38,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:38,166 INFO L85 PathProgramCache]: Analyzing trace with hash -434122396, now seen corresponding path program 1 times [2023-11-23 21:21:38,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:38,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446800571] [2023-11-23 21:21:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:38,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:21:38,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446800571] [2023-11-23 21:21:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446800571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:38,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:38,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277024525] [2023-11-23 21:21:38,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:38,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:38,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:38,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:38,493 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 21:21:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:38,663 INFO L93 Difference]: Finished difference Result 719 states and 973 transitions. [2023-11-23 21:21:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:38,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 121 [2023-11-23 21:21:38,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:38,668 INFO L225 Difference]: With dead ends: 719 [2023-11-23 21:21:38,669 INFO L226 Difference]: Without dead ends: 374 [2023-11-23 21:21:38,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:38,672 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 467 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 460 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 [2023-11-23 21:21:38,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 460 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:21:38,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-23 21:21:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-23 21:21:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 222 states have (on average 1.2747747747747749) internal successors, (283), 239 states have internal predecessors, (283), 107 states have call successors, (107), 44 states have call predecessors, (107), 44 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2023-11-23 21:21:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 496 transitions. [2023-11-23 21:21:38,733 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 496 transitions. Word has length 121 [2023-11-23 21:21:38,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:38,735 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 496 transitions. [2023-11-23 21:21:38,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 21:21:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 496 transitions. [2023-11-23 21:21:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 21:21:38,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:38,741 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:38,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:21:38,742 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:38,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:38,752 INFO L85 PathProgramCache]: Analyzing trace with hash 594033967, now seen corresponding path program 1 times [2023-11-23 21:21:38,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:38,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115480157] [2023-11-23 21:21:38,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:38,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:21:38,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:38,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115480157] [2023-11-23 21:21:38,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115480157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:38,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:38,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:38,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227655795] [2023-11-23 21:21:38,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:38,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:38,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:38,948 INFO L87 Difference]: Start difference. First operand 374 states and 496 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:21:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:39,239 INFO L93 Difference]: Finished difference Result 1052 states and 1418 transitions. [2023-11-23 21:21:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:39,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 117 [2023-11-23 21:21:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:39,250 INFO L225 Difference]: With dead ends: 1052 [2023-11-23 21:21:39,250 INFO L226 Difference]: Without dead ends: 707 [2023-11-23 21:21:39,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:39,258 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 467 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:39,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 866 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:21:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-11-23 21:21:39,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 705. [2023-11-23 21:21:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 418 states have (on average 1.2727272727272727) internal successors, (532), 448 states have internal predecessors, (532), 199 states have call successors, (199), 87 states have call predecessors, (199), 87 states have return successors, (210), 196 states have call predecessors, (210), 197 states have call successors, (210) [2023-11-23 21:21:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 941 transitions. [2023-11-23 21:21:39,345 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 941 transitions. Word has length 117 [2023-11-23 21:21:39,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:39,346 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 941 transitions. [2023-11-23 21:21:39,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:21:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 941 transitions. [2023-11-23 21:21:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 21:21:39,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:39,350 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:39,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:21:39,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:39,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:39,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2086481291, now seen corresponding path program 1 times [2023-11-23 21:21:39,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:39,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940908937] [2023-11-23 21:21:39,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:39,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:21:39,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:39,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940908937] [2023-11-23 21:21:39,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940908937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:39,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:39,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144089219] [2023-11-23 21:21:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:39,482 INFO L87 Difference]: Start difference. First operand 705 states and 941 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:21:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:39,658 INFO L93 Difference]: Finished difference Result 707 states and 942 transitions. [2023-11-23 21:21:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:39,658 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, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 118 [2023-11-23 21:21:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:39,661 INFO L225 Difference]: With dead ends: 707 [2023-11-23 21:21:39,661 INFO L226 Difference]: Without dead ends: 374 [2023-11-23 21:21:39,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:39,664 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 448 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:39,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 463 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:21:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-23 21:21:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-23 21:21:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 223 states have (on average 1.2556053811659194) internal successors, (280), 238 states have internal predecessors, (280), 105 states have call successors, (105), 45 states have call predecessors, (105), 45 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-23 21:21:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 489 transitions. [2023-11-23 21:21:39,694 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 489 transitions. Word has length 118 [2023-11-23 21:21:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:39,695 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 489 transitions. [2023-11-23 21:21:39,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 21:21:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 489 transitions. [2023-11-23 21:21:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 21:21:39,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:39,698 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:39,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:21:39,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:39,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:39,699 INFO L85 PathProgramCache]: Analyzing trace with hash -593547678, now seen corresponding path program 1 times [2023-11-23 21:21:39,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:39,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338429645] [2023-11-23 21:21:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:39,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 21:21:39,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:39,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338429645] [2023-11-23 21:21:39,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338429645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:39,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:39,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:39,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562134907] [2023-11-23 21:21:39,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:39,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:39,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:39,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:39,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:39,811 INFO L87 Difference]: Start difference. First operand 374 states and 489 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, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:21:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:39,963 INFO L93 Difference]: Finished difference Result 709 states and 925 transitions. [2023-11-23 21:21:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:39,964 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, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 128 [2023-11-23 21:21:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:39,967 INFO L225 Difference]: With dead ends: 709 [2023-11-23 21:21:39,967 INFO L226 Difference]: Without dead ends: 377 [2023-11-23 21:21:39,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:39,970 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 431 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 448 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 [2023-11-23 21:21:39,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 448 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:21:39,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-23 21:21:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 371. [2023-11-23 21:21:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 223 states have (on average 1.2062780269058295) internal successors, (269), 233 states have internal predecessors, (269), 102 states have call successors, (102), 45 states have call predecessors, (102), 45 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-23 21:21:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 472 transitions. [2023-11-23 21:21:40,004 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 472 transitions. Word has length 128 [2023-11-23 21:21:40,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:40,005 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 472 transitions. [2023-11-23 21:21:40,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:21:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 472 transitions. [2023-11-23 21:21:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 21:21:40,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:40,008 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:40,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:21:40,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:40,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1105561758, now seen corresponding path program 1 times [2023-11-23 21:21:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:40,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882019831] [2023-11-23 21:21:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:40,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 21:21:40,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:40,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882019831] [2023-11-23 21:21:40,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882019831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:40,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:40,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:40,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281011810] [2023-11-23 21:21:40,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:40,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:40,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:40,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:40,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:40,216 INFO L87 Difference]: Start difference. First operand 371 states and 472 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 21:21:40,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:40,389 INFO L93 Difference]: Finished difference Result 585 states and 738 transitions. [2023-11-23 21:21:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:40,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 135 [2023-11-23 21:21:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:40,394 INFO L225 Difference]: With dead ends: 585 [2023-11-23 21:21:40,394 INFO L226 Difference]: Without dead ends: 373 [2023-11-23 21:21:40,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:40,398 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 0 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 837 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 [2023-11-23 21:21:40,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 837 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:21:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-23 21:21:40,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-11-23 21:21:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 225 states have (on average 1.2044444444444444) internal successors, (271), 235 states have internal predecessors, (271), 102 states have call successors, (102), 45 states have call predecessors, (102), 45 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-23 21:21:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 474 transitions. [2023-11-23 21:21:40,445 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 474 transitions. Word has length 135 [2023-11-23 21:21:40,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:40,445 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 474 transitions. [2023-11-23 21:21:40,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 21:21:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 474 transitions. [2023-11-23 21:21:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 21:21:40,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:40,449 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:40,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:21:40,450 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:40,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:40,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1351862937, now seen corresponding path program 1 times [2023-11-23 21:21:40,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:40,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591841376] [2023-11-23 21:21:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:40,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 21:21:40,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:40,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591841376] [2023-11-23 21:21:40,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591841376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:40,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:40,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:21:40,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453741650] [2023-11-23 21:21:40,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:40,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:40,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:40,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:40,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:40,633 INFO L87 Difference]: Start difference. First operand 373 states and 474 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, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 21:21:40,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:40,799 INFO L93 Difference]: Finished difference Result 744 states and 971 transitions. [2023-11-23 21:21:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:40,800 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, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 140 [2023-11-23 21:21:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:40,804 INFO L225 Difference]: With dead ends: 744 [2023-11-23 21:21:40,804 INFO L226 Difference]: Without dead ends: 440 [2023-11-23 21:21:40,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:40,807 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 76 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 841 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 [2023-11-23 21:21:40,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 841 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:21:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-11-23 21:21:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 435. [2023-11-23 21:21:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 273 states have (on average 1.249084249084249) internal successors, (341), 283 states have internal predecessors, (341), 116 states have call successors, (116), 45 states have call predecessors, (116), 45 states have return successors, (115), 114 states have call predecessors, (115), 115 states have call successors, (115) [2023-11-23 21:21:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 572 transitions. [2023-11-23 21:21:40,852 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 572 transitions. Word has length 140 [2023-11-23 21:21:40,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:40,853 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 572 transitions. [2023-11-23 21:21:40,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 21:21:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 572 transitions. [2023-11-23 21:21:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 21:21:40,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:40,857 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:40,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:21:40,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__DecryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:40,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:40,858 INFO L85 PathProgramCache]: Analyzing trace with hash -775648917, now seen corresponding path program 1 times [2023-11-23 21:21:40,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:40,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202342148] [2023-11-23 21:21:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:40,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 21:21:41,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:41,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202342148] [2023-11-23 21:21:41,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202342148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:21:41,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479923779] [2023-11-23 21:21:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:41,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:21:41,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:21:41,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:21:41,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2cca4-216d-4a7a-b569-0e56d94ddaa3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:21:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:41,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:21:41,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:21:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 21:21:41,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:21:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 21:21:41,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479923779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:21:41,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [482971322] [2023-11-23 21:21:41,832 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2023-11-23 21:21:41,832 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:21:41,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:21:41,847 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:21:41,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs