./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/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_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/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_5a0f401c-a817-443d-b6a2-0d6441120903/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 f3a1dbda837d8ce3c466139238aee66f09284cf7efb22d92a7aae56a5f98c665 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:26:32,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:26:32,471 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 08:26:32,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:26:32,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:26:32,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:26:32,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:26:32,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:26:32,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:26:32,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:26:32,502 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:26:32,503 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:26:32,504 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:26:32,504 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:26:32,505 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:26:32,505 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:26:32,506 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:26:32,506 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:26:32,507 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:26:32,507 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:26:32,508 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:26:32,511 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:26:32,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:26:32,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:26:32,512 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:26:32,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:26:32,513 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:26:32,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:26:32,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:26:32,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:26:32,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:26:32,514 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:26:32,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:26:32,515 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:26:32,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:26:32,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:26:32,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:26:32,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:26:32,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:26:32,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:26:32,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:26:32,517 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:26:32,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:26:32,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:26:32,517 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:26:32,517 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:26:32,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:26:32,518 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_5a0f401c-a817-443d-b6a2-0d6441120903/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3a1dbda837d8ce3c466139238aee66f09284cf7efb22d92a7aae56a5f98c665 [2023-12-02 08:26:32,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:26:32,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:26:32,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:26:32,763 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:26:32,763 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:26:32,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c [2023-12-02 08:26:35,513 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:26:35,755 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:26:35,755 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/sv-benchmarks/c/product-lines/email_spec4_product19.cil.c [2023-12-02 08:26:35,776 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/data/16c317cdd/cdb6f49afe3b49ee9ae669058d8b10cb/FLAG5fdaa6030 [2023-12-02 08:26:35,790 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/data/16c317cdd/cdb6f49afe3b49ee9ae669058d8b10cb [2023-12-02 08:26:35,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:26:35,793 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:26:35,794 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:26:35,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:26:35,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:26:35,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:26:35" (1/1) ... [2023-12-02 08:26:35,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c46523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:35, skipping insertion in model container [2023-12-02 08:26:35,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:26:35" (1/1) ... [2023-12-02 08:26:35,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:26:35,998 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_5a0f401c-a817-443d-b6a2-0d6441120903/sv-benchmarks/c/product-lines/email_spec4_product19.cil.c[1542,1555] [2023-12-02 08:26:36,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:26:36,284 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:26:36,291 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-12-02 08:26:36,293 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignForward_spec.i","") [57] [2023-12-02 08:26:36,293 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [98] [2023-12-02 08:26:36,293 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [136] [2023-12-02 08:26:36,293 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [502] [2023-12-02 08:26:36,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [802] [2023-12-02 08:26:36,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1018] [2023-12-02 08:26:36,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1319] [2023-12-02 08:26:36,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1336] [2023-12-02 08:26:36,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1434] [2023-12-02 08:26:36,294 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2501] [2023-12-02 08:26:36,297 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_5a0f401c-a817-443d-b6a2-0d6441120903/sv-benchmarks/c/product-lines/email_spec4_product19.cil.c[1542,1555] [2023-12-02 08:26:36,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:26:36,403 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 08:26:36,409 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:26:36,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36 WrapperNode [2023-12-02 08:26:36,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:26:36,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:26:36,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:26:36,411 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:26:36,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,490 INFO L138 Inliner]: procedures = 127, calls = 199, calls flagged for inlining = 59, calls inlined = 54, statements flattened = 1004 [2023-12-02 08:26:36,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:26:36,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:26:36,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:26:36,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:26:36,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,542 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:26:36,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:26:36,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:26:36,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:26:36,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (1/1) ... [2023-12-02 08:26:36,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:26:36,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:26:36,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:26:36,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:26:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 08:26:36,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 08:26:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 08:26:36,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 08:26:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 08:26:36,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 08:26:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 08:26:36,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 08:26:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 08:26:36,656 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 08:26:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 08:26:36,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 08:26:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 08:26:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 08:26:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 08:26:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 08:26:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 08:26:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 08:26:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 08:26:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:26:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 08:26:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 08:26:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 08:26:36,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 08:26:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 08:26:36,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 08:26:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 08:26:36,659 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 08:26:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 08:26:36,659 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 08:26:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 08:26:36,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 08:26:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 08:26:36,660 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 08:26:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 08:26:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 08:26:36,660 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 08:26:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:26:36,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:26:36,839 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:26:36,842 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:26:37,463 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:26:37,938 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:26:37,939 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 08:26:37,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:26:37 BoogieIcfgContainer [2023-12-02 08:26:37,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:26:37,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:26:37,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:26:37,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:26:37,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:26:35" (1/3) ... [2023-12-02 08:26:37,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3e6ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:26:37, skipping insertion in model container [2023-12-02 08:26:37,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:26:36" (2/3) ... [2023-12-02 08:26:37,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3e6ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:26:37, skipping insertion in model container [2023-12-02 08:26:37,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:26:37" (3/3) ... [2023-12-02 08:26:37,952 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product19.cil.c [2023-12-02 08:26:37,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:26:37,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 08:26:38,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:26:38,037 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;@44bce940, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:26:38,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 08:26:38,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 94 states have (on average 1.351063829787234) internal successors, (127), 96 states have internal predecessors, (127), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 08:26:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 08:26:38,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:38,058 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:26:38,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:38,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:38,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1770228797, now seen corresponding path program 1 times [2023-12-02 08:26:38,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:26:38,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238566559] [2023-12-02 08:26:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:38,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:26:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:26:38,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:26:38,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238566559] [2023-12-02 08:26:38,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238566559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:26:38,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:26:38,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 08:26:38,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153568352] [2023-12-02 08:26:38,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:26:38,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 08:26:38,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:26:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 08:26:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:26:38,451 INFO L87 Difference]: Start difference. First operand has 157 states, 94 states have (on average 1.351063829787234) internal successors, (127), 96 states have internal predecessors, (127), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 08:26:38,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:26:38,575 INFO L93 Difference]: Finished difference Result 231 states and 308 transitions. [2023-12-02 08:26:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 08:26:38,578 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 58 [2023-12-02 08:26:38,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:26:38,589 INFO L225 Difference]: With dead ends: 231 [2023-12-02 08:26:38,590 INFO L226 Difference]: Without dead ends: 154 [2023-12-02 08:26:38,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:26:38,598 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:26:38,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:26:38,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-02 08:26:38,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-12-02 08:26:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-02 08:26:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 208 transitions. [2023-12-02 08:26:38,657 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 208 transitions. Word has length 58 [2023-12-02 08:26:38,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:26:38,659 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 208 transitions. [2023-12-02 08:26:38,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 08:26:38,660 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 208 transitions. [2023-12-02 08:26:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 08:26:38,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:38,664 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:26:38,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 08:26:38,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:38,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash -150279889, now seen corresponding path program 1 times [2023-12-02 08:26:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:26:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957168789] [2023-12-02 08:26:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:26:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:26:38,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:26:38,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957168789] [2023-12-02 08:26:38,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957168789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:26:38,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:26:38,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:26:38,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513765361] [2023-12-02 08:26:38,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:26:38,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:26:38,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:26:38,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:26:38,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:26:38,869 INFO L87 Difference]: Start difference. First operand 154 states and 208 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 08:26:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:26:38,967 INFO L93 Difference]: Finished difference Result 227 states and 296 transitions. [2023-12-02 08:26:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:26:38,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2023-12-02 08:26:38,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:26:38,970 INFO L225 Difference]: With dead ends: 227 [2023-12-02 08:26:38,970 INFO L226 Difference]: Without dead ends: 156 [2023-12-02 08:26:38,972 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 08:26:38,973 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:26:38,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 357 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:26:38,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-02 08:26:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-12-02 08:26:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 95 states have internal predecessors, (123), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-02 08:26:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 210 transitions. [2023-12-02 08:26:38,994 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 210 transitions. Word has length 59 [2023-12-02 08:26:38,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:26:38,994 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 210 transitions. [2023-12-02 08:26:38,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 08:26:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 210 transitions. [2023-12-02 08:26:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 08:26:38,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:38,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:26:38,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 08:26:38,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:38,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash -607949912, now seen corresponding path program 1 times [2023-12-02 08:26:38,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:26:38,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161573103] [2023-12-02 08:26:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:38,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:26:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:26:39,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:26:39,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161573103] [2023-12-02 08:26:39,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161573103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:26:39,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:26:39,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:26:39,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973517965] [2023-12-02 08:26:39,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:26:39,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:26:39,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:26:39,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:26:39,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:26:39,113 INFO L87 Difference]: Start difference. First operand 156 states and 210 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 08:26:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:26:39,208 INFO L93 Difference]: Finished difference Result 342 states and 479 transitions. [2023-12-02 08:26:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:26:39,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2023-12-02 08:26:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:26:39,211 INFO L225 Difference]: With dead ends: 342 [2023-12-02 08:26:39,211 INFO L226 Difference]: Without dead ends: 204 [2023-12-02 08:26:39,213 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 08:26:39,214 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 57 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:26:39,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 357 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:26:39,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-02 08:26:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 199. [2023-12-02 08:26:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 126 states have (on average 1.3968253968253967) internal successors, (176), 127 states have internal predecessors, (176), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-02 08:26:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 285 transitions. [2023-12-02 08:26:39,235 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 285 transitions. Word has length 64 [2023-12-02 08:26:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:26:39,235 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 285 transitions. [2023-12-02 08:26:39,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 08:26:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 285 transitions. [2023-12-02 08:26:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 08:26:39,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:26:39,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:26:39,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 08:26:39,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:26:39,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:26:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1663227266, now seen corresponding path program 1 times [2023-12-02 08:26:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:26:39,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957695547] [2023-12-02 08:26:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:26:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:26:39,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:26:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957695547] [2023-12-02 08:26:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957695547] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:26:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221941060] [2023-12-02 08:26:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:26:39,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:26:39,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:26:39,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:26:39,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 08:26:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:26:39,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:26:39,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:26:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:26:39,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:26:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:26:39,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221941060] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:26:39,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2021498236] [2023-12-02 08:26:39,942 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2023-12-02 08:26:39,943 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:26:39,947 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:26:39,952 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:26:39,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:27:17,747 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 08:27:17,905 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 237 for LOIs [2023-12-02 08:27:18,119 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 08:28:17,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2021498236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:28:17,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 08:28:17,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 08:28:17,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470729371] [2023-12-02 08:28:17,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:28:17,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 08:28:17,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:28:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 08:28:17,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 08:28:17,044 INFO L87 Difference]: Start difference. First operand 199 states and 285 transitions. Second operand has 24 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 08:28:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:28:27,939 INFO L93 Difference]: Finished difference Result 443 states and 666 transitions. [2023-12-02 08:28:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 08:28:27,939 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 65 [2023-12-02 08:28:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:28:27,942 INFO L225 Difference]: With dead ends: 443 [2023-12-02 08:28:27,942 INFO L226 Difference]: Without dead ends: 262 [2023-12-02 08:28:27,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 62.0s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2023-12-02 08:28:27,944 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 112 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:28:27,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2468 Invalid, 2070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-02 08:28:27,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-02 08:28:27,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 222. [2023-12-02 08:28:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 148 states have (on average 1.412162162162162) internal successors, (209), 149 states have internal predecessors, (209), 55 states have call successors, (55), 18 states have call predecessors, (55), 18 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-02 08:28:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 318 transitions. [2023-12-02 08:28:28,000 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 318 transitions. Word has length 65 [2023-12-02 08:28:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:28:28,000 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 318 transitions. [2023-12-02 08:28:28,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 08:28:28,000 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 318 transitions. [2023-12-02 08:28:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 08:28:28,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:28:28,002 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 08:28:28,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 08:28:28,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:28:28,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:28:28,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:28:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1410408432, now seen corresponding path program 1 times [2023-12-02 08:28:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:28:28,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486588889] [2023-12-02 08:28:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:28:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:28:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:28:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 08:28:28,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:28:28,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486588889] [2023-12-02 08:28:28,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486588889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:28:28,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:28:28,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:28:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614524476] [2023-12-02 08:28:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:28:28,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:28:28,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:28:28,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:28:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:28:28,289 INFO L87 Difference]: Start difference. First operand 222 states and 318 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 08:28:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:28:28,466 INFO L93 Difference]: Finished difference Result 537 states and 800 transitions. [2023-12-02 08:28:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:28:28,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2023-12-02 08:28:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:28:28,469 INFO L225 Difference]: With dead ends: 537 [2023-12-02 08:28:28,469 INFO L226 Difference]: Without dead ends: 339 [2023-12-02 08:28:28,470 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 08:28:28,471 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 55 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:28:28,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 371 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:28:28,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-02 08:28:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 334. [2023-12-02 08:28:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 235 states have (on average 1.4680851063829787) internal successors, (345), 236 states have internal predecessors, (345), 80 states have call successors, (80), 18 states have call predecessors, (80), 18 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-02 08:28:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 504 transitions. [2023-12-02 08:28:28,559 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 504 transitions. Word has length 70 [2023-12-02 08:28:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:28:28,560 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 504 transitions. [2023-12-02 08:28:28,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 08:28:28,560 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 504 transitions. [2023-12-02 08:28:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 08:28:28,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:28:28,562 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 08:28:28,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 08:28:28,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:28:28,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:28:28,563 INFO L85 PathProgramCache]: Analyzing trace with hash 195770087, now seen corresponding path program 1 times [2023-12-02 08:28:28,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:28:28,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532203740] [2023-12-02 08:28:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:28:28,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:28:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:28:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 08:28:28,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:28:28,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532203740] [2023-12-02 08:28:28,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532203740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:28:28,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448521007] [2023-12-02 08:28:28,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:28:28,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:28:28,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:28:28,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:28:28,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 08:28:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:28:28,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:28:28,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:28:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 08:28:28,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:28:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 08:28:29,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448521007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:28:29,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1778492349] [2023-12-02 08:28:29,050 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-12-02 08:28:29,050 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:28:29,051 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:28:29,051 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:28:29,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:29:21,245 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 08:29:21,404 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 466 for LOIs [2023-12-02 08:29:23,416 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 08:29:43,321 WARN L293 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 466 DAG size of output: 467 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 08:29:52,269 WARN L293 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 496 DAG size of output: 491 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 08:30:50,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1778492349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:30:50,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 08:30:50,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 08:30:50,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344956015] [2023-12-02 08:30:50,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:30:50,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 08:30:50,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:30:50,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 08:30:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 08:30:50,479 INFO L87 Difference]: Start difference. First operand 334 states and 504 transitions. Second operand has 28 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-02 08:31:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:31:00,919 INFO L93 Difference]: Finished difference Result 684 states and 1061 transitions. [2023-12-02 08:31:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 08:31:00,920 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 71 [2023-12-02 08:31:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:31:00,923 INFO L225 Difference]: With dead ends: 684 [2023-12-02 08:31:00,924 INFO L226 Difference]: Without dead ends: 413 [2023-12-02 08:31:00,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 87.0s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 08:31:00,925 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 169 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:31:00,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2534 Invalid, 2275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-12-02 08:31:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-02 08:31:01,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 348. [2023-12-02 08:31:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 247 states have (on average 1.465587044534413) internal successors, (362), 248 states have internal predecessors, (362), 81 states have call successors, (81), 19 states have call predecessors, (81), 19 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 08:31:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 523 transitions. [2023-12-02 08:31:01,027 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 523 transitions. Word has length 71 [2023-12-02 08:31:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:31:01,028 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 523 transitions. [2023-12-02 08:31:01,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-02 08:31:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 523 transitions. [2023-12-02 08:31:01,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 08:31:01,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:31:01,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:31:01,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 08:31:01,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:31:01,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:31:01,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:31:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1878020009, now seen corresponding path program 1 times [2023-12-02 08:31:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:31:01,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424159318] [2023-12-02 08:31:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:31:01,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:31:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:31:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:31:01,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:31:01,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424159318] [2023-12-02 08:31:01,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424159318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:31:01,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722434582] [2023-12-02 08:31:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:31:01,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:31:01,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:31:01,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:31:01,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 08:31:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:31:01,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:31:01,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:31:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:31:01,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:31:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:31:01,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722434582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:31:01,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [767853844] [2023-12-02 08:31:01,711 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2023-12-02 08:31:01,711 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:31:01,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:31:01,711 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:31:01,712 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:32:49,556 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 08:32:49,711 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 533 for LOIs [2023-12-02 08:32:51,278 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 457 for LOIs [2023-12-02 08:32:52,003 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 237 for LOIs [2023-12-02 08:32:52,214 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 542 for LOIs [2023-12-02 08:32:53,865 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 08:34:32,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [767853844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:34:32,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 08:34:32,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 08:34:32,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928188864] [2023-12-02 08:34:32,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:34:32,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 08:34:32,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:34:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 08:34:32,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 08:34:32,140 INFO L87 Difference]: Start difference. First operand 348 states and 523 transitions. Second operand has 33 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-02 08:34:53,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:34:53,108 INFO L93 Difference]: Finished difference Result 709 states and 1096 transitions. [2023-12-02 08:34:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 08:34:53,109 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 74 [2023-12-02 08:34:53,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:34:53,112 INFO L225 Difference]: With dead ends: 709 [2023-12-02 08:34:53,112 INFO L226 Difference]: Without dead ends: 438 [2023-12-02 08:34:53,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 101.3s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 08:34:53,114 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 87 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 3077 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:34:53,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 2767 Invalid, 3087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3077 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2023-12-02 08:34:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-02 08:34:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 384. [2023-12-02 08:34:53,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 277 states have (on average 1.4584837545126355) internal successors, (404), 278 states have internal predecessors, (404), 84 states have call successors, (84), 22 states have call predecessors, (84), 22 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-02 08:34:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 571 transitions. [2023-12-02 08:34:53,260 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 571 transitions. Word has length 74 [2023-12-02 08:34:53,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:34:53,261 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 571 transitions. [2023-12-02 08:34:53,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-02 08:34:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 571 transitions. [2023-12-02 08:34:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 08:34:53,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:34:53,262 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:34:53,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 08:34:53,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:34:53,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:34:53,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:34:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash -909585324, now seen corresponding path program 1 times [2023-12-02 08:34:53,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:34:53,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071344667] [2023-12-02 08:34:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:53,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:34:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:34:53,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:34:53,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071344667] [2023-12-02 08:34:53,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071344667] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:34:53,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640630864] [2023-12-02 08:34:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:34:53,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:34:53,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:34:53,583 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:34:53,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 08:34:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:34:53,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:34:53,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:34:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:34:53,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:34:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 08:34:53,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640630864] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:34:53,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1116385880] [2023-12-02 08:34:53,919 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2023-12-02 08:34:53,919 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:34:53,920 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:34:53,920 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:34:53,920 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:35:46,222 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 08:35:46,377 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 237 for LOIs [2023-12-02 08:35:46,591 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 08:37:13,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1116385880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:37:13,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 08:37:13,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 08:37:13,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790600591] [2023-12-02 08:37:13,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:37:13,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 08:37:13,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:37:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 08:37:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 08:37:13,838 INFO L87 Difference]: Start difference. First operand 384 states and 571 transitions. Second operand has 32 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 08:37:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:37:27,137 INFO L93 Difference]: Finished difference Result 723 states and 1111 transitions. [2023-12-02 08:37:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 08:37:27,138 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 73 [2023-12-02 08:37:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:37:27,141 INFO L225 Difference]: With dead ends: 723 [2023-12-02 08:37:27,141 INFO L226 Difference]: Without dead ends: 452 [2023-12-02 08:37:27,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 90.3s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 08:37:27,143 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 228 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-02 08:37:27,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 2487 Invalid, 2286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-12-02 08:37:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-12-02 08:37:27,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 404. [2023-12-02 08:37:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 297 states have (on average 1.4612794612794613) internal successors, (434), 298 states have internal predecessors, (434), 84 states have call successors, (84), 22 states have call predecessors, (84), 22 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-02 08:37:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 601 transitions. [2023-12-02 08:37:27,303 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 601 transitions. Word has length 73 [2023-12-02 08:37:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:37:27,303 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 601 transitions. [2023-12-02 08:37:27,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 08:37:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 601 transitions. [2023-12-02 08:37:27,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 08:37:27,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:37:27,306 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:37:27,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 08:37:27,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 08:37:27,506 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:37:27,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:37:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2035920451, now seen corresponding path program 1 times [2023-12-02 08:37:27,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:37:27,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685690180] [2023-12-02 08:37:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:37:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:37:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:37:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-02 08:37:28,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:37:28,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685690180] [2023-12-02 08:37:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685690180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:37:28,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:37:28,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-02 08:37:28,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817846352] [2023-12-02 08:37:28,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:37:28,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 08:37:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:37:28,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 08:37:28,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-12-02 08:37:28,428 INFO L87 Difference]: Start difference. First operand 404 states and 601 transitions. Second operand has 19 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-02 08:37:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:37:29,625 INFO L93 Difference]: Finished difference Result 454 states and 668 transitions. [2023-12-02 08:37:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 08:37:29,625 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 76 [2023-12-02 08:37:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:37:29,629 INFO L225 Difference]: With dead ends: 454 [2023-12-02 08:37:29,629 INFO L226 Difference]: Without dead ends: 422 [2023-12-02 08:37:29,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2023-12-02 08:37:29,631 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 147 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 08:37:29,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1702 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 08:37:29,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-02 08:37:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 421. [2023-12-02 08:37:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 307 states have (on average 1.4429967426710097) internal successors, (443), 307 states have internal predecessors, (443), 88 states have call successors, (88), 26 states have call predecessors, (88), 25 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 08:37:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 618 transitions. [2023-12-02 08:37:29,814 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 618 transitions. Word has length 76 [2023-12-02 08:37:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:37:29,815 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 618 transitions. [2023-12-02 08:37:29,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-02 08:37:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 618 transitions. [2023-12-02 08:37:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 08:37:29,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:37:29,818 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:37:29,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 08:37:29,818 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:37:29,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:37:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1490749394, now seen corresponding path program 1 times [2023-12-02 08:37:29,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:37:29,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216837587] [2023-12-02 08:37:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:37:29,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:37:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:37:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 08:37:30,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:37:30,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216837587] [2023-12-02 08:37:30,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216837587] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:37:30,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280405870] [2023-12-02 08:37:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:37:30,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:37:30,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:37:30,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:37:30,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a0f401c-a817-443d-b6a2-0d6441120903/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 08:37:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:37:30,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:37:30,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:37:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 08:37:30,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:37:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 08:37:30,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280405870] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:37:30,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [171049117] [2023-12-02 08:37:30,494 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2023-12-02 08:37:30,494 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:37:30,495 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:37:30,495 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:37:30,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:38:15,175 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 08:38:15,329 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 466 for LOIs [2023-12-02 08:38:17,306 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2023-12-02 08:38:22,074 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 243 for LOIs [2023-12-02 08:38:22,271 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 265 for LOIs [2023-12-02 08:38:37,117 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 246 for LOIs [2023-12-02 08:38:37,273 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 262 for LOIs [2023-12-02 08:38:38,192 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2023-12-02 08:38:38,368 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 227 for LOIs [2023-12-02 08:38:38,515 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 275 for LOIs [2023-12-02 08:38:38,866 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 08:38:58,651 WARN L293 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 466 DAG size of output: 467 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 08:39:07,715 WARN L293 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 496 DAG size of output: 492 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 08:40:13,684 WARN L293 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 287 DAG size of output: 261 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 08:40:51,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [171049117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:40:51,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 08:40:51,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [6, 5, 5] total 71 [2023-12-02 08:40:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598820961] [2023-12-02 08:40:51,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:40:51,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-02 08:40:51,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:40:51,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-02 08:40:51,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=4750, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 08:40:51,851 INFO L87 Difference]: Start difference. First operand 421 states and 618 transitions. Second operand has 63 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 37 states have internal predecessors, (49), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17)