./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/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_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh --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 cf397912a53dab4d44f4df9c274fc7c69b1023a0a0a29a356bc73a744537daa6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:05:28,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:05:28,432 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:05:28,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:05:28,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:05:28,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:05:28,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:05:28,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:05:28,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:05:28,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:05:28,464 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:05:28,465 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:05:28,465 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:05:28,466 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:05:28,466 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:05:28,467 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:05:28,467 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:05:28,468 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:05:28,468 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:05:28,469 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:05:28,470 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:05:28,474 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:05:28,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:05:28,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:05:28,476 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:05:28,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:05:28,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:05:28,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:05:28,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:05:28,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:05:28,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:05:28,478 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:05:28,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:05:28,479 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:05:28,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:05:28,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:05:28,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:05:28,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:05:28,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:05:28,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:05:28,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:05:28,481 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:05:28,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:05:28,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:05:28,481 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:05:28,481 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:05:28,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:05:28,482 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_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf397912a53dab4d44f4df9c274fc7c69b1023a0a0a29a356bc73a744537daa6 [2023-12-02 17:05:28,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:05:28,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:05:28,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:05:28,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:05:28,719 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:05:28,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c [2023-12-02 17:05:31,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:05:31,759 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:05:31,759 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c [2023-12-02 17:05:31,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/data/008c3f48f/8fa7b43c4e414982a3f33c41eda89dde/FLAG2c2d746cc [2023-12-02 17:05:31,797 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/data/008c3f48f/8fa7b43c4e414982a3f33c41eda89dde [2023-12-02 17:05:31,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:05:31,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:05:31,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:05:31,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:05:31,807 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:05:31,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:05:31" (1/1) ... [2023-12-02 17:05:31,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc35f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:31, skipping insertion in model container [2023-12-02 17:05:31,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:05:31" (1/1) ... [2023-12-02 17:05:31,893 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:05:32,236 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_e77cb6de-007e-40fb-84d8-40bb31bc4404/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c[18883,18896] [2023-12-02 17:05:32,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:05:32,436 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:05:32,447 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-12-02 17:05:32,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [335] [2023-12-02 17:05:32,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [353] [2023-12-02 17:05:32,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [938] [2023-12-02 17:05:32,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [947] [2023-12-02 17:05:32,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2018] [2023-12-02 17:05:32,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2128] [2023-12-02 17:05:32,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2527] [2023-12-02 17:05:32,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2876] [2023-12-02 17:05:32,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3080] [2023-12-02 17:05:32,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignForward_spec.i","") [3446] [2023-12-02 17:05:32,475 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_e77cb6de-007e-40fb-84d8-40bb31bc4404/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c[18883,18896] [2023-12-02 17:05:32,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:05:32,612 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:05:32,618 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:05:32,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32 WrapperNode [2023-12-02 17:05:32,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:05:32,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:05:32,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:05:32,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:05:32,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,723 INFO L138 Inliner]: procedures = 151, calls = 283, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1340 [2023-12-02 17:05:32,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:05:32,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:05:32,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:05:32,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:05:32,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:05:32,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:05:32,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:05:32,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:05:32,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (1/1) ... [2023-12-02 17:05:32,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:05:32,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:05:32,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:05:32,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:05:32,885 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 17:05:32,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 17:05:32,885 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2023-12-02 17:05:32,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2023-12-02 17:05:32,886 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2023-12-02 17:05:32,886 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2023-12-02 17:05:32,887 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-12-02 17:05:32,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-12-02 17:05:32,887 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 17:05:32,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 17:05:32,887 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-12-02 17:05:32,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-12-02 17:05:32,887 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 17:05:32,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 17:05:32,888 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2023-12-02 17:05:32,888 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2023-12-02 17:05:32,888 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 17:05:32,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 17:05:32,888 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2023-12-02 17:05:32,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2023-12-02 17:05:32,889 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 17:05:32,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 17:05:32,889 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 17:05:32,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 17:05:32,889 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 17:05:32,889 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 17:05:32,890 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2023-12-02 17:05:32,890 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2023-12-02 17:05:32,890 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2023-12-02 17:05:32,890 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2023-12-02 17:05:32,890 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 17:05:32,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 17:05:32,890 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 17:05:32,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 17:05:32,891 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 17:05:32,891 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 17:05:32,891 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 17:05:32,891 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2023-12-02 17:05:32,891 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2023-12-02 17:05:32,891 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 17:05:32,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 17:05:32,892 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-02 17:05:32,892 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-02 17:05:32,892 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 17:05:32,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 17:05:32,892 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2023-12-02 17:05:32,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2023-12-02 17:05:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:05:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 17:05:32,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 17:05:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 17:05:32,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 17:05:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2023-12-02 17:05:32,893 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2023-12-02 17:05:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2023-12-02 17:05:32,894 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2023-12-02 17:05:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2023-12-02 17:05:32,894 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2023-12-02 17:05:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-12-02 17:05:32,894 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-12-02 17:05:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 17:05:32,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 17:05:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 17:05:32,895 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 17:05:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 17:05:32,895 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 17:05:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 17:05:32,896 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 17:05:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 17:05:32,896 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 17:05:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 17:05:32,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 17:05:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2023-12-02 17:05:32,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2023-12-02 17:05:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2023-12-02 17:05:32,897 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2023-12-02 17:05:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 17:05:32,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 17:05:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 17:05:32,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 17:05:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:05:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 17:05:32,898 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 17:05:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2023-12-02 17:05:32,898 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2023-12-02 17:05:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-12-02 17:05:32,899 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-12-02 17:05:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-12-02 17:05:32,899 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-12-02 17:05:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:05:32,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:05:33,107 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:05:33,109 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:05:34,020 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:05:34,673 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:05:34,674 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:05:34,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:05:34 BoogieIcfgContainer [2023-12-02 17:05:34,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:05:34,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:05:34,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:05:34,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:05:34,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:05:31" (1/3) ... [2023-12-02 17:05:34,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1170725c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:05:34, skipping insertion in model container [2023-12-02 17:05:34,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:32" (2/3) ... [2023-12-02 17:05:34,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1170725c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:05:34, skipping insertion in model container [2023-12-02 17:05:34,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:05:34" (3/3) ... [2023-12-02 17:05:34,684 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_productSimulator.cil.c [2023-12-02 17:05:34,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:05:34,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:05:34,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:05:34,770 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;@7459dbd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:05:34,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:05:34,777 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) [2023-12-02 17:05:34,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 17:05:34,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:05:34,796 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] [2023-12-02 17:05:34,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:05:34,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:05:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1107794425, now seen corresponding path program 1 times [2023-12-02 17:05:34,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:05:34,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862305982] [2023-12-02 17:05:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:05:34,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:05:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:05:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 17:05:35,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:05:35,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862305982] [2023-12-02 17:05:35,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862305982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:05:35,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:05:35,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:05:35,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825962681] [2023-12-02 17:05:35,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:05:35,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:05:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:05:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:05:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:05:35,391 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) [2023-12-02 17:05:35,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:05:35,648 INFO L93 Difference]: Finished difference Result 729 states and 1001 transitions. [2023-12-02 17:05:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:05:35,650 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 [2023-12-02 17:05:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:05:35,666 INFO L225 Difference]: With dead ends: 729 [2023-12-02 17:05:35,666 INFO L226 Difference]: Without dead ends: 377 [2023-12-02 17:05:35,673 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 [2023-12-02 17:05:35,676 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1385 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 [2023-12-02 17:05:35,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1385 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:05:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-02 17:05:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-12-02 17:05:35,748 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) [2023-12-02 17:05:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2023-12-02 17:05:35,755 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 101 [2023-12-02 17:05:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:05:35,757 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2023-12-02 17:05:35,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 17:05:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2023-12-02 17:05:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-02 17:05:35,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:05:35,765 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] [2023-12-02 17:05:35,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:05:35,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:05:35,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:05:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash -199809197, now seen corresponding path program 1 times [2023-12-02 17:05:35,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:05:35,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980002000] [2023-12-02 17:05:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:05:35,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:05:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:05:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 17:05:35,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:05:35,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980002000] [2023-12-02 17:05:35,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980002000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:05:35,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:05:35,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:05:35,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331884406] [2023-12-02 17:05:35,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:05:35,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:05:35,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:05:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:05:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:05:35,987 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) [2023-12-02 17:05:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:05:36,149 INFO L93 Difference]: Finished difference Result 727 states and 988 transitions. [2023-12-02 17:05:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:05:36,150 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 [2023-12-02 17:05:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:05:36,154 INFO L225 Difference]: With dead ends: 727 [2023-12-02 17:05:36,155 INFO L226 Difference]: Without dead ends: 377 [2023-12-02 17:05:36,156 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 [2023-12-02 17:05:36,158 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 474 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:05:36,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 457 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:05:36,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-02 17:05:36,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-12-02 17:05:36,193 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) [2023-12-02 17:05:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 500 transitions. [2023-12-02 17:05:36,197 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 500 transitions. Word has length 107 [2023-12-02 17:05:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:05:36,198 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 500 transitions. [2023-12-02 17:05:36,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-02 17:05:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 500 transitions. [2023-12-02 17:05:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 17:05:36,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:05:36,202 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] [2023-12-02 17:05:36,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:05:36,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:05:36,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:05:36,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1114498635, now seen corresponding path program 1 times [2023-12-02 17:05:36,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:05:36,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321090987] [2023-12-02 17:05:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:05:36,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:05:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:05:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 17:05:36,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:05:36,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321090987] [2023-12-02 17:05:36,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321090987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:05:36,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:05:36,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:05:36,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514417698] [2023-12-02 17:05:36,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:05:36,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:05:36,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:05:36,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:05:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:05:36,317 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) [2023-12-02 17:05:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:05:36,444 INFO L93 Difference]: Finished difference Result 721 states and 967 transitions. [2023-12-02 17:05:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:05:36,445 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 [2023-12-02 17:05:36,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:05:36,449 INFO L225 Difference]: With dead ends: 721 [2023-12-02 17:05:36,449 INFO L226 Difference]: Without dead ends: 375 [2023-12-02 17:05:36,451 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 [2023-12-02 17:05:36,452 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 455 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:05:36,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 470 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:05:36,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-02 17:05:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-12-02 17:05:36,481 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) [2023-12-02 17:05:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 493 transitions. [2023-12-02 17:05:36,485 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 493 transitions. Word has length 113 [2023-12-02 17:05:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:05:36,485 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 493 transitions. [2023-12-02 17:05:36,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-02 17:05:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 493 transitions. [2023-12-02 17:05:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 17:05:36,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:05:36,489 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] [2023-12-02 17:05:36,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:05:36,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:05:36,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:05:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash 302271856, now seen corresponding path program 1 times [2023-12-02 17:05:36,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:05:36,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304441215] [2023-12-02 17:05:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:05:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:05:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:05:36,595 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 17:05:36,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:05:36,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304441215] [2023-12-02 17:05:36,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304441215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:05:36,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:05:36,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:05:36,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494249615] [2023-12-02 17:05:36,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:05:36,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:05:36,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:05:36,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:05:36,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:05:36,599 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) [2023-12-02 17:05:36,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:05:36,755 INFO L93 Difference]: Finished difference Result 713 states and 934 transitions. [2023-12-02 17:05:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:05:36,760 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 [2023-12-02 17:05:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:05:36,763 INFO L225 Difference]: With dead ends: 713 [2023-12-02 17:05:36,764 INFO L226 Difference]: Without dead ends: 378 [2023-12-02 17:05:36,765 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 [2023-12-02 17:05:36,766 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 436 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:05:36,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 453 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:05:36,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-02 17:05:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 372. [2023-12-02 17:05:36,792 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) [2023-12-02 17:05:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 476 transitions. [2023-12-02 17:05:36,796 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 476 transitions. Word has length 114 [2023-12-02 17:05:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:05:36,796 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 476 transitions. [2023-12-02 17:05:36,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-02 17:05:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 476 transitions. [2023-12-02 17:05:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 17:05:36,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:05:36,800 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] [2023-12-02 17:05:36,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:05:36,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:05:36,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:05:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash -864357756, now seen corresponding path program 1 times [2023-12-02 17:05:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:05:36,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818308817] [2023-12-02 17:05:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:05:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:05:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:05:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 17:05:36,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:05:36,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818308817] [2023-12-02 17:05:36,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818308817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:05:36,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:05:36,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:05:36,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798093495] [2023-12-02 17:05:36,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:05:36,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:05:36,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:05:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:05:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:05:36,953 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) [2023-12-02 17:05:37,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:05:37,087 INFO L93 Difference]: Finished difference Result 589 states and 747 transitions. [2023-12-02 17:05:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:05:37,088 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 [2023-12-02 17:05:37,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:05:37,091 INFO L225 Difference]: With dead ends: 589 [2023-12-02 17:05:37,091 INFO L226 Difference]: Without dead ends: 374 [2023-12-02 17:05:37,093 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 [2023-12-02 17:05:37,094 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 0 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:05:37,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 847 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:05:37,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-02 17:05:37,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-12-02 17:05:37,124 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) [2023-12-02 17:05:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 478 transitions. [2023-12-02 17:05:37,128 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 478 transitions. Word has length 126 [2023-12-02 17:05:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:05:37,129 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 478 transitions. [2023-12-02 17:05:37,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 17:05:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 478 transitions. [2023-12-02 17:05:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 17:05:37,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:05:37,131 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:05:37,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 17:05:37,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:05:37,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:05:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -953798145, now seen corresponding path program 1 times [2023-12-02 17:05:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:05:37,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017515096] [2023-12-02 17:05:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:05:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:05:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:05:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 17:05:37,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:05:37,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017515096] [2023-12-02 17:05:37,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017515096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:05:37,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:05:37,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:05:37,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703901485] [2023-12-02 17:05:37,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:05:37,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:05:37,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:05:37,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:05:37,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:05:37,242 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) [2023-12-02 17:05:37,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:05:37,420 INFO L93 Difference]: Finished difference Result 748 states and 980 transitions. [2023-12-02 17:05:37,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:05:37,420 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 [2023-12-02 17:05:37,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:05:37,424 INFO L225 Difference]: With dead ends: 748 [2023-12-02 17:05:37,424 INFO L226 Difference]: Without dead ends: 441 [2023-12-02 17:05:37,426 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 [2023-12-02 17:05:37,426 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 76 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 862 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 [2023-12-02 17:05:37,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 862 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:05:37,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-02 17:05:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 436. [2023-12-02 17:05:37,455 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) [2023-12-02 17:05:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 576 transitions. [2023-12-02 17:05:37,458 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 576 transitions. Word has length 131 [2023-12-02 17:05:37,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:05:37,459 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 576 transitions. [2023-12-02 17:05:37,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 17:05:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 576 transitions. [2023-12-02 17:05:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 17:05:37,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:05:37,462 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:05:37,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 17:05:37,462 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:05:37,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:05:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash -522136645, now seen corresponding path program 1 times [2023-12-02 17:05:37,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:05:37,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756820767] [2023-12-02 17:05:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:05:37,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:05:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:05:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 17:05:37,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:05:37,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756820767] [2023-12-02 17:05:37,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756820767] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:05:37,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894307937] [2023-12-02 17:05:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:05:37,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:05:37,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:05:37,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:05:37,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:05:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:05:38,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:05:38,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:05:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 17:05:38,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:05:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 17:05:38,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894307937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:05:38,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1986638406] [2023-12-02 17:05:38,244 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2023-12-02 17:05:38,245 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:05:38,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:05:38,253 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:05:38,253 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:06:49,426 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 490 for LOIs [2023-12-02 17:06:53,761 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 496 for LOIs [2023-12-02 17:06:59,161 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 498 for LOIs [2023-12-02 17:07:00,654 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 490 for LOIs [2023-12-02 17:07:05,536 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 17:07:05,693 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 247 for LOIs [2023-12-02 17:07:05,927 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:08:35,273 WARN L293 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 505 DAG size of output: 496 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:08:41,479 WARN L293 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 509 DAG size of output: 500 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:10:09,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1986638406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:09,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:10:09,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2023-12-02 17:10:09,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476850548] [2023-12-02 17:10:09,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:09,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-02 17:10:09,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:09,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-02 17:10:09,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=3657, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 17:10:09,779 INFO L87 Difference]: Start difference. First operand 436 states and 576 transitions. Second operand has 58 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 16 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (23), 18 states have call predecessors, (23), 16 states have call successors, (23) [2023-12-02 17:11:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:21,591 INFO L93 Difference]: Finished difference Result 1007 states and 1341 transitions. [2023-12-02 17:11:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-02 17:11:21,592 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 16 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (23), 18 states have call predecessors, (23), 16 states have call successors, (23) Word has length 132 [2023-12-02 17:11:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:21,596 INFO L225 Difference]: With dead ends: 1007 [2023-12-02 17:11:21,597 INFO L226 Difference]: Without dead ends: 595 [2023-12-02 17:11:21,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2139 ImplicationChecksByTransitivity, 222.4s TimeCoverageRelationStatistics Valid=346, Invalid=5204, Unknown=0, NotChecked=0, Total=5550 [2023-12-02 17:11:21,601 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 287 mSDsluCounter, 6355 mSDsCounter, 0 mSdLazyCounter, 7392 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 6757 SdHoareTripleChecker+Invalid, 7419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 7392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:11:21,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 6757 Invalid, 7419 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [27 Valid, 7392 Invalid, 0 Unknown, 0 Unchecked, 32.7s Time] [2023-12-02 17:11:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-12-02 17:11:21,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 514. [2023-12-02 17:11:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 332 states have (on average 1.2439759036144578) internal successors, (413), 342 states have internal predecessors, (413), 126 states have call successors, (126), 55 states have call predecessors, (126), 55 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2023-12-02 17:11:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 664 transitions. [2023-12-02 17:11:21,734 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 664 transitions. Word has length 132 [2023-12-02 17:11:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:21,735 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 664 transitions. [2023-12-02 17:11:21,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 40 states have (on average 1.675) internal successors, (67), 39 states have internal predecessors, (67), 16 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (23), 18 states have call predecessors, (23), 16 states have call successors, (23) [2023-12-02 17:11:21,736 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 664 transitions. [2023-12-02 17:11:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-02 17:11:21,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:21,739 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:11:21,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:11:21,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:11:21,939 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:11:21,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash -913392133, now seen corresponding path program 1 times [2023-12-02 17:11:21,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:11:21,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383950235] [2023-12-02 17:11:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:11:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-02 17:11:22,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:11:22,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383950235] [2023-12-02 17:11:22,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383950235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:22,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:11:22,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:11:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176276026] [2023-12-02 17:11:22,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:22,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:11:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:11:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:11:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:11:22,035 INFO L87 Difference]: Start difference. First operand 514 states and 664 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, (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) [2023-12-02 17:11:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:22,429 INFO L93 Difference]: Finished difference Result 1340 states and 1772 transitions. [2023-12-02 17:11:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:11:22,430 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, (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 134 [2023-12-02 17:11:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:22,436 INFO L225 Difference]: With dead ends: 1340 [2023-12-02 17:11:22,437 INFO L226 Difference]: Without dead ends: 866 [2023-12-02 17:11:22,439 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 [2023-12-02 17:11:22,439 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 444 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:11:22,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1183 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:11:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-12-02 17:11:22,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 864. [2023-12-02 17:11:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 552 states have (on average 1.2554347826086956) internal successors, (693), 569 states have internal predecessors, (693), 218 states have call successors, (218), 93 states have call predecessors, (218), 93 states have return successors, (225), 214 states have call predecessors, (225), 216 states have call successors, (225) [2023-12-02 17:11:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1136 transitions. [2023-12-02 17:11:22,706 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1136 transitions. Word has length 134 [2023-12-02 17:11:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:22,707 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1136 transitions. [2023-12-02 17:11:22,707 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, (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) [2023-12-02 17:11:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1136 transitions. [2023-12-02 17:11:22,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-02 17:11:22,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:22,710 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:11:22,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 17:11:22,711 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:11:22,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:22,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1834180798, now seen corresponding path program 1 times [2023-12-02 17:11:22,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:11:22,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131331332] [2023-12-02 17:11:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:22,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:11:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-02 17:11:22,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:11:22,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131331332] [2023-12-02 17:11:22,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131331332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:22,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:11:22,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:11:22,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624972642] [2023-12-02 17:11:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:22,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:11:22,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:11:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:11:22,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:11:22,813 INFO L87 Difference]: Start difference. First operand 864 states and 1136 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, (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) [2023-12-02 17:11:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:23,206 INFO L93 Difference]: Finished difference Result 1805 states and 2419 transitions. [2023-12-02 17:11:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:11:23,207 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, (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 134 [2023-12-02 17:11:23,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:23,215 INFO L225 Difference]: With dead ends: 1805 [2023-12-02 17:11:23,215 INFO L226 Difference]: Without dead ends: 1206 [2023-12-02 17:11:23,219 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 [2023-12-02 17:11:23,219 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 436 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:11:23,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1067 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:11:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-12-02 17:11:23,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1204. [2023-12-02 17:11:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 748 states have (on average 1.2219251336898396) internal successors, (914), 770 states have internal predecessors, (914), 306 states have call successors, (306), 147 states have call predecessors, (306), 149 states have return successors, (340), 306 states have call predecessors, (340), 296 states have call successors, (340) [2023-12-02 17:11:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1560 transitions. [2023-12-02 17:11:23,434 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1560 transitions. Word has length 134 [2023-12-02 17:11:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:23,434 INFO L495 AbstractCegarLoop]: Abstraction has 1204 states and 1560 transitions. [2023-12-02 17:11:23,434 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, (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) [2023-12-02 17:11:23,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1560 transitions. [2023-12-02 17:11:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 17:11:23,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:23,438 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 17:11:23,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 17:11:23,439 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:11:23,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:23,439 INFO L85 PathProgramCache]: Analyzing trace with hash -648497840, now seen corresponding path program 1 times [2023-12-02 17:11:23,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:11:23,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144784069] [2023-12-02 17:11:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:23,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:11:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 17:11:23,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:11:23,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144784069] [2023-12-02 17:11:23,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144784069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:23,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:11:23,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:11:23,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547355201] [2023-12-02 17:11:23,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:23,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:11:23,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:11:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:11:23,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:11:23,538 INFO L87 Difference]: Start difference. First operand 1204 states and 1560 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 17:11:23,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:23,882 INFO L93 Difference]: Finished difference Result 2579 states and 3443 transitions. [2023-12-02 17:11:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:11:23,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 139 [2023-12-02 17:11:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:23,892 INFO L225 Difference]: With dead ends: 2579 [2023-12-02 17:11:23,892 INFO L226 Difference]: Without dead ends: 1502 [2023-12-02 17:11:23,896 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 [2023-12-02 17:11:23,897 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 74 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 849 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 [2023-12-02 17:11:23,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 849 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:11:23,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2023-12-02 17:11:24,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1486. [2023-12-02 17:11:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 968 states have (on average 1.2675619834710743) internal successors, (1227), 990 states have internal predecessors, (1227), 368 states have call successors, (368), 147 states have call predecessors, (368), 149 states have return successors, (402), 368 states have call predecessors, (402), 358 states have call successors, (402) [2023-12-02 17:11:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1997 transitions. [2023-12-02 17:11:24,232 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1997 transitions. Word has length 139 [2023-12-02 17:11:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:24,232 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 1997 transitions. [2023-12-02 17:11:24,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 17:11:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1997 transitions. [2023-12-02 17:11:24,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 17:11:24,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:24,237 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:11:24,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 17:11:24,237 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:11:24,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash -100194090, now seen corresponding path program 1 times [2023-12-02 17:11:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:11:24,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973138462] [2023-12-02 17:11:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:11:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 17:11:24,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:11:24,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973138462] [2023-12-02 17:11:24,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973138462] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:11:24,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971981702] [2023-12-02 17:11:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:24,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:11:24,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:11:24,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:11:24,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:11:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:24,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:11:24,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:11:24,763 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 17:11:24,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:11:24,839 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 17:11:24,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971981702] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:11:24,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1748414872] [2023-12-02 17:11:24,843 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2023-12-02 17:11:24,844 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:11:24,844 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:11:24,845 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:11:24,845 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:13:15,622 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 490 for LOIs [2023-12-02 17:13:19,767 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 496 for LOIs [2023-12-02 17:13:25,415 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 498 for LOIs [2023-12-02 17:13:27,238 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 490 for LOIs [2023-12-02 17:13:32,394 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 17:13:32,561 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 506 for LOIs [2023-12-02 17:13:34,928 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:15:07,249 WARN L293 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 505 DAG size of output: 496 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:15:13,480 WARN L293 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 509 DAG size of output: 500 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:15:37,559 WARN L293 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 506 DAG size of output: 506 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:15:48,320 WARN L293 SmtUtils]: Spent 10.39s on a formula simplification. DAG size of input: 536 DAG size of output: 531 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:16:59,429 WARN L293 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 527 DAG size of output: 527 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:17:10,296 WARN L293 SmtUtils]: Spent 10.27s on a formula simplification. DAG size of input: 528 DAG size of output: 527 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:17:21,686 WARN L293 SmtUtils]: Spent 10.72s on a formula simplification. DAG size of input: 534 DAG size of output: 533 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:17:47,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1748414872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:17:47,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:17:47,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [4, 4, 4] total 67 [2023-12-02 17:17:47,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273715324] [2023-12-02 17:17:47,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:17:47,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-02 17:17:47,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:17:47,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-02 17:17:47,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=4144, Unknown=0, NotChecked=0, Total=4422 [2023-12-02 17:17:47,902 INFO L87 Difference]: Start difference. First operand 1486 states and 1997 transitions. Second operand has 62 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 43 states have internal predecessors, (72), 17 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (24), 19 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-02 17:18:59,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:18:59,047 INFO L93 Difference]: Finished difference Result 2615 states and 3528 transitions. [2023-12-02 17:18:59,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-02 17:18:59,048 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 43 states have internal predecessors, (72), 17 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (24), 19 states have call predecessors, (24), 17 states have call successors, (24) Word has length 140 [2023-12-02 17:18:59,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:18:59,058 INFO L225 Difference]: With dead ends: 2615 [2023-12-02 17:18:59,058 INFO L226 Difference]: Without dead ends: 1586 [2023-12-02 17:18:59,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 281.4s TimeCoverageRelationStatistics Valid=347, Invalid=5203, Unknown=0, NotChecked=0, Total=5550 [2023-12-02 17:18:59,064 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 271 mSDsluCounter, 6046 mSDsCounter, 0 mSdLazyCounter, 8060 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 6416 SdHoareTripleChecker+Invalid, 8076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 8060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:18:59,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 6416 Invalid, 8076 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [16 Valid, 8060 Invalid, 0 Unknown, 0 Unchecked, 42.0s Time] [2023-12-02 17:18:59,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2023-12-02 17:18:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1502. [2023-12-02 17:18:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 982 states have (on average 1.2688391038696538) internal successors, (1246), 1004 states have internal predecessors, (1246), 369 states have call successors, (369), 148 states have call predecessors, (369), 150 states have return successors, (403), 369 states have call predecessors, (403), 359 states have call successors, (403) [2023-12-02 17:18:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2018 transitions. [2023-12-02 17:18:59,443 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2018 transitions. Word has length 140 [2023-12-02 17:18:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:18:59,443 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 2018 transitions. [2023-12-02 17:18:59,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 43 states have internal predecessors, (72), 17 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (24), 19 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-02 17:18:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2018 transitions. [2023-12-02 17:18:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 17:18:59,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:18:59,448 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:18:59,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:18:59,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:18:59,649 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:18:59,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:18:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1206316936, now seen corresponding path program 1 times [2023-12-02 17:18:59,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:18:59,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069039026] [2023-12-02 17:18:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:18:59,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:18:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:18:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 17:18:59,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:18:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069039026] [2023-12-02 17:18:59,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069039026] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:18:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995743365] [2023-12-02 17:18:59,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:18:59,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:18:59,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:18:59,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:18:59,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77cb6de-007e-40fb-84d8-40bb31bc4404/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:19:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:19:00,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:19:00,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:19:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 17:19:00,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:19:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 17:19:00,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995743365] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:19:00,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1616121722] [2023-12-02 17:19:00,262 INFO L159 IcfgInterpreter]: Started Sifa with 113 locations of interest [2023-12-02 17:19:00,262 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:19:00,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:19:00,263 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:19:00,263 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs