./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product21.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_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/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_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/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_7db24165-0590-47b5-92de-cddb133584b5/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 8cc51a90eddcdd1da62e020cc4e0c6e4b67a610d36952c31f8c5cbe15c29949c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:47:48,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:47:49,079 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:47:49,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:47:49,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:47:49,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:47:49,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:47:49,112 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:47:49,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:47:49,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:47:49,114 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:47:49,114 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:47:49,115 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:47:49,115 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:47:49,116 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:47:49,116 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:47:49,117 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:47:49,117 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:47:49,118 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:47:49,118 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:47:49,119 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:47:49,121 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:47:49,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:47:49,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:47:49,122 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:47:49,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:47:49,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:47:49,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:47:49,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:47:49,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:47:49,125 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:47:49,125 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:47:49,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:47:49,126 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:47:49,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:47:49,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:47:49,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:47:49,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:47:49,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:47:49,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:47:49,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:47:49,127 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:47:49,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:47:49,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:47:49,128 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:47:49,128 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:47:49,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:47:49,128 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_7db24165-0590-47b5-92de-cddb133584b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cc51a90eddcdd1da62e020cc4e0c6e4b67a610d36952c31f8c5cbe15c29949c [2023-12-02 17:47:49,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:47:49,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:47:49,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:47:49,389 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:47:49,392 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:47:49,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec8_product21.cil.c [2023-12-02 17:47:52,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:47:52,626 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:47:52,626 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/sv-benchmarks/c/product-lines/email_spec8_product21.cil.c [2023-12-02 17:47:52,649 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/data/2d2192a21/961385921ca94e549f45d3020ed63a62/FLAG7338c9607 [2023-12-02 17:47:52,891 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/data/2d2192a21/961385921ca94e549f45d3020ed63a62 [2023-12-02 17:47:52,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:47:52,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:47:52,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:47:52,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:47:52,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:47:52,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:47:52" (1/1) ... [2023-12-02 17:47:52,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16bdc442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:52, skipping insertion in model container [2023-12-02 17:47:52,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:47:52" (1/1) ... [2023-12-02 17:47:52,973 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:47:53,341 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_7db24165-0590-47b5-92de-cddb133584b5/sv-benchmarks/c/product-lines/email_spec8_product21.cil.c[15456,15469] [2023-12-02 17:47:53,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:47:53,518 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:47:53,529 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-12-02 17:47:53,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [380] [2023-12-02 17:47:53,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [492] [2023-12-02 17:47:53,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [810] [2023-12-02 17:47:53,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [819] [2023-12-02 17:47:53,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1038] [2023-12-02 17:47:53,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [1404] [2023-12-02 17:47:53,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1446] [2023-12-02 17:47:53,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2508] [2023-12-02 17:47:53,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2543] [2023-12-02 17:47:53,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2946] [2023-12-02 17:47:53,563 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_7db24165-0590-47b5-92de-cddb133584b5/sv-benchmarks/c/product-lines/email_spec8_product21.cil.c[15456,15469] [2023-12-02 17:47:53,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:47:53,651 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:47:53,659 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:47:53,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53 WrapperNode [2023-12-02 17:47:53,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:47:53,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:47:53,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:47:53,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:47:53,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,764 INFO L138 Inliner]: procedures = 129, calls = 220, calls flagged for inlining = 58, calls inlined = 55, statements flattened = 1100 [2023-12-02 17:47:53,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:47:53,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:47:53,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:47:53,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:47:53,776 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:47:53,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:47:53,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:47:53,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:47:53,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (1/1) ... [2023-12-02 17:47:53,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:47:53,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:47:53,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:47:53,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:47:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-12-02 17:47:53,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-12-02 17:47:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 17:47:53,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 17:47:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-12-02 17:47:53,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-12-02 17:47:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 17:47:53,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 17:47:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 17:47:53,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 17:47:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 17:47:53,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 17:47:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 17:47:53,927 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 17:47:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 17:47:53,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 17:47:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 17:47:53,928 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 17:47:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 17:47:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 17:47:53,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 17:47:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:47:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-12-02 17:47:53,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-12-02 17:47:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 17:47:53,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 17:47:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 17:47:53,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 17:47:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 17:47:53,929 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 17:47:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2023-12-02 17:47:53,930 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2023-12-02 17:47:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 17:47:53,930 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 17:47:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 17:47:53,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 17:47:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 17:47:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 17:47:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 17:47:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 17:47:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:47:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 17:47:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 17:47:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-12-02 17:47:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-12-02 17:47:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:47:53,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:47:54,121 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:47:54,123 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:47:54,905 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:47:55,490 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:47:55,490 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:47:55,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:47:55 BoogieIcfgContainer [2023-12-02 17:47:55,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:47:55,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:47:55,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:47:55,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:47:55,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:47:52" (1/3) ... [2023-12-02 17:47:55,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d71563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:47:55, skipping insertion in model container [2023-12-02 17:47:55,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:47:53" (2/3) ... [2023-12-02 17:47:55,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d71563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:47:55, skipping insertion in model container [2023-12-02 17:47:55,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:47:55" (3/3) ... [2023-12-02 17:47:55,501 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product21.cil.c [2023-12-02 17:47:55,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:47:55,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:47:55,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:47:55,591 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;@1a5ca593, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:47:55,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:47:55,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 105 states have (on average 1.3333333333333333) internal successors, (140), 110 states have internal predecessors, (140), 57 states have call successors, (57), 21 states have call predecessors, (57), 21 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-02 17:47:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 17:47:55,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:47:55,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:47:55,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:47:55,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:47:55,618 INFO L85 PathProgramCache]: Analyzing trace with hash -642722064, now seen corresponding path program 1 times [2023-12-02 17:47:55,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:47:55,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746518699] [2023-12-02 17:47:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:47:55,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:47:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:47:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:47:55,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:47:55,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746518699] [2023-12-02 17:47:55,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746518699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:47:55,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:47:55,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:47:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817174744] [2023-12-02 17:47:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:47:55,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 17:47:55,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:47:56,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 17:47:56,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:47:56,012 INFO L87 Difference]: Start difference. First operand has 185 states, 105 states have (on average 1.3333333333333333) internal successors, (140), 110 states have internal predecessors, (140), 57 states have call successors, (57), 21 states have call predecessors, (57), 21 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:47:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:47:56,154 INFO L93 Difference]: Finished difference Result 278 states and 379 transitions. [2023-12-02 17:47:56,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 17:47:56,157 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 63 [2023-12-02 17:47:56,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:47:56,171 INFO L225 Difference]: With dead ends: 278 [2023-12-02 17:47:56,171 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 17:47:56,177 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 17:47:56,181 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:47:56,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:47:56,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 17:47:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-12-02 17:47:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 103 states have (on average 1.3009708737864079) internal successors, (134), 107 states have internal predecessors, (134), 57 states have call successors, (57), 21 states have call predecessors, (57), 21 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 17:47:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 247 transitions. [2023-12-02 17:47:56,242 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 247 transitions. Word has length 63 [2023-12-02 17:47:56,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:47:56,244 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 247 transitions. [2023-12-02 17:47:56,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:47:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 247 transitions. [2023-12-02 17:47:56,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 17:47:56,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:47:56,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:47:56,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:47:56,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:47:56,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:47:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash -873883169, now seen corresponding path program 1 times [2023-12-02 17:47:56,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:47:56,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811250641] [2023-12-02 17:47:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:47:56,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:47:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:47:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:47:56,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:47:56,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811250641] [2023-12-02 17:47:56,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811250641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:47:56,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:47:56,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:47:56,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6653661] [2023-12-02 17:47:56,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:47:56,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:47:56,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:47:56,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:47:56,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:47:56,439 INFO L87 Difference]: Start difference. First operand 182 states and 247 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:47:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:47:56,567 INFO L93 Difference]: Finished difference Result 274 states and 364 transitions. [2023-12-02 17:47:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:47:56,568 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, (15), 2 states have call predecessors, (15), 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 17:47:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:47:56,571 INFO L225 Difference]: With dead ends: 274 [2023-12-02 17:47:56,571 INFO L226 Difference]: Without dead ends: 184 [2023-12-02 17:47:56,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:47:56,574 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:47:56,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 423 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:47:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-02 17:47:56,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-12-02 17:47:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 105 states have (on average 1.2952380952380953) internal successors, (136), 109 states have internal predecessors, (136), 57 states have call successors, (57), 21 states have call predecessors, (57), 21 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 17:47:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 249 transitions. [2023-12-02 17:47:56,598 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 249 transitions. Word has length 64 [2023-12-02 17:47:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:47:56,599 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 249 transitions. [2023-12-02 17:47:56,599 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:47:56,599 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 249 transitions. [2023-12-02 17:47:56,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 17:47:56,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:47:56,603 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:47:56,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:47:56,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:47:56,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:47:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash 247542148, now seen corresponding path program 1 times [2023-12-02 17:47:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:47:56,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080250603] [2023-12-02 17:47:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:47:56,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:47:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:47:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:47:56,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:47:56,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080250603] [2023-12-02 17:47:56,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080250603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:47:56,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:47:56,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:47:56,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831958474] [2023-12-02 17:47:56,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:47:56,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:47:56,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:47:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:47:56,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:47:56,736 INFO L87 Difference]: Start difference. First operand 184 states and 249 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:47:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:47:56,871 INFO L93 Difference]: Finished difference Result 403 states and 565 transitions. [2023-12-02 17:47:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:47:56,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2023-12-02 17:47:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:47:56,875 INFO L225 Difference]: With dead ends: 403 [2023-12-02 17:47:56,875 INFO L226 Difference]: Without dead ends: 237 [2023-12-02 17:47:56,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:47:56,878 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 59 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:47:56,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 428 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:47:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-02 17:47:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 232. [2023-12-02 17:47:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 139 states have (on average 1.3741007194244603) internal successors, (191), 143 states have internal predecessors, (191), 71 states have call successors, (71), 21 states have call predecessors, (71), 21 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 17:47:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 332 transitions. [2023-12-02 17:47:56,904 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 332 transitions. Word has length 69 [2023-12-02 17:47:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:47:56,905 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 332 transitions. [2023-12-02 17:47:56,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:47:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 332 transitions. [2023-12-02 17:47:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 17:47:56,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:47:56,908 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:47:56,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:47:56,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:47:56,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:47:56,908 INFO L85 PathProgramCache]: Analyzing trace with hash -569195689, now seen corresponding path program 1 times [2023-12-02 17:47:56,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:47:56,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708973501] [2023-12-02 17:47:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:47:56,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:47:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:47:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:47:57,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:47:57,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708973501] [2023-12-02 17:47:57,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708973501] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:47:57,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965293479] [2023-12-02 17:47:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:47:57,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:47:57,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:47:57,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:47:57,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:47:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:47:57,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:47:57,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:47:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:47:57,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:47:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:47:57,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965293479] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:47:57,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [927557894] [2023-12-02 17:47:57,614 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-12-02 17:47:57,614 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:47:57,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:47:57,625 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:47:57,625 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:48:43,330 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 17:48:43,560 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 227 for LOIs [2023-12-02 17:48:43,725 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:49:42,845 WARN L293 SmtUtils]: Spent 9.60s on a formula simplification. DAG size of input: 506 DAG size of output: 506 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:49:52,629 WARN L293 SmtUtils]: Spent 9.46s on a formula simplification. DAG size of input: 507 DAG size of output: 506 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:50:03,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [927557894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:03,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:50:03,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 17:50:03,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536952973] [2023-12-02 17:50:03,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:03,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 17:50:03,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 17:50:03,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2023-12-02 17:50:03,857 INFO L87 Difference]: Start difference. First operand 232 states and 332 transitions. Second operand has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 17:50:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:20,030 INFO L93 Difference]: Finished difference Result 511 states and 764 transitions. [2023-12-02 17:50:20,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 17:50:20,031 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 70 [2023-12-02 17:50:20,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:20,035 INFO L225 Difference]: With dead ends: 511 [2023-12-02 17:50:20,035 INFO L226 Difference]: Without dead ends: 297 [2023-12-02 17:50:20,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 83.7s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2023-12-02 17:50:20,037 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 58 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 2541 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:20,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2971 Invalid, 2551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2541 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2023-12-02 17:50:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-02 17:50:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 255. [2023-12-02 17:50:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.391304347826087) internal successors, (224), 165 states have internal predecessors, (224), 71 states have call successors, (71), 22 states have call predecessors, (71), 22 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 17:50:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 365 transitions. [2023-12-02 17:50:20,106 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 365 transitions. Word has length 70 [2023-12-02 17:50:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:20,106 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 365 transitions. [2023-12-02 17:50:20,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 17:50:20,107 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 365 transitions. [2023-12-02 17:50:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 17:50:20,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:20,110 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:20,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:50:20,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-02 17:50:20,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:50:20,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash 790227238, now seen corresponding path program 1 times [2023-12-02 17:50:20,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:20,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82027529] [2023-12-02 17:50:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:20,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 17:50:20,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82027529] [2023-12-02 17:50:20,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82027529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:50:20,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:50:20,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:50:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154382286] [2023-12-02 17:50:20,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:50:20,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:50:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:50:20,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:50:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:20,392 INFO L87 Difference]: Start difference. First operand 255 states and 365 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 17:50:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:50:20,585 INFO L93 Difference]: Finished difference Result 613 states and 910 transitions. [2023-12-02 17:50:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:50:20,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 75 [2023-12-02 17:50:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:50:20,589 INFO L225 Difference]: With dead ends: 613 [2023-12-02 17:50:20,589 INFO L226 Difference]: Without dead ends: 382 [2023-12-02 17:50:20,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:50:20,591 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 57 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:50:20,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 427 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:50:20,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-12-02 17:50:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 377. [2023-12-02 17:50:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 252 states have (on average 1.4444444444444444) internal successors, (364), 256 states have internal predecessors, (364), 102 states have call successors, (102), 22 states have call predecessors, (102), 22 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-02 17:50:20,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 567 transitions. [2023-12-02 17:50:20,722 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 567 transitions. Word has length 75 [2023-12-02 17:50:20,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:50:20,722 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 567 transitions. [2023-12-02 17:50:20,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 17:50:20,723 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 567 transitions. [2023-12-02 17:50:20,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 17:50:20,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:50:20,726 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:50:20,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 17:50:20,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:50:20,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:50:20,726 INFO L85 PathProgramCache]: Analyzing trace with hash -966626756, now seen corresponding path program 1 times [2023-12-02 17:50:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:50:20,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439600301] [2023-12-02 17:50:20,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:20,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:50:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 17:50:20,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:50:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439600301] [2023-12-02 17:50:20,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439600301] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:50:20,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183626057] [2023-12-02 17:50:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:50:20,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:50:20,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:50:20,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:50:20,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:50:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:50:21,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:50:21,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:50:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 17:50:21,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:50:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 17:50:21,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183626057] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:50:21,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1051640857] [2023-12-02 17:50:21,263 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2023-12-02 17:50:21,263 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:50:21,264 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:50:21,264 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:50:21,264 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:51:22,297 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 17:51:22,507 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 487 for LOIs [2023-12-02 17:51:24,700 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:51:47,189 WARN L293 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 487 DAG size of output: 487 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:51:57,574 WARN L293 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 517 DAG size of output: 512 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:52:39,743 WARN L293 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 510 DAG size of output: 510 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:52:49,586 WARN L293 SmtUtils]: Spent 9.50s on a formula simplification. DAG size of input: 511 DAG size of output: 510 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:53:17,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1051640857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:17,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:53:17,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 17:53:17,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096313329] [2023-12-02 17:53:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:17,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 17:53:17,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:17,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 17:53:17,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 17:53:17,805 INFO L87 Difference]: Start difference. First operand 377 states and 567 transitions. Second operand has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-02 17:53:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:38,376 INFO L93 Difference]: Finished difference Result 772 states and 1191 transitions. [2023-12-02 17:53:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 17:53:38,377 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 76 [2023-12-02 17:53:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:38,382 INFO L225 Difference]: With dead ends: 772 [2023-12-02 17:53:38,382 INFO L226 Difference]: Without dead ends: 458 [2023-12-02 17:53:38,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 116.8s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 17:53:38,385 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 151 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:38,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 2768 Invalid, 2686 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2023-12-02 17:53:38,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-12-02 17:53:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 391. [2023-12-02 17:53:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 264 states have (on average 1.4431818181818181) internal successors, (381), 268 states have internal predecessors, (381), 103 states have call successors, (103), 23 states have call predecessors, (103), 23 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-02 17:53:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 586 transitions. [2023-12-02 17:53:38,529 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 586 transitions. Word has length 76 [2023-12-02 17:53:38,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:38,530 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 586 transitions. [2023-12-02 17:53:38,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-02 17:53:38,531 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 586 transitions. [2023-12-02 17:53:38,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 17:53:38,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:38,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:38,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:53:38,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 17:53:38,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:53:38,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:38,735 INFO L85 PathProgramCache]: Analyzing trace with hash -804022767, now seen corresponding path program 1 times [2023-12-02 17:53:38,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:38,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180665260] [2023-12-02 17:53:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:38,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:53:38,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:38,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180665260] [2023-12-02 17:53:38,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180665260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:53:38,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608995756] [2023-12-02 17:53:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:38,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:38,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:38,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:38,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:53:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:39,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:39,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:53:39,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:53:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:53:39,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608995756] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:53:39,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [443636943] [2023-12-02 17:53:39,299 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-12-02 17:53:39,299 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:53:39,300 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:53:39,300 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:53:39,300 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:55:18,423 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 17:55:18,660 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 546 for LOIs [2023-12-02 17:55:20,883 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 555 for LOIs [2023-12-02 17:55:22,887 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 478 for LOIs [2023-12-02 17:55:23,736 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 227 for LOIs [2023-12-02 17:55:23,916 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:56:26,353 WARN L293 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 583 DAG size of output: 578 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:56:39,119 WARN L293 SmtUtils]: Spent 12.33s on a formula simplification. DAG size of input: 584 DAG size of output: 578 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:57:35,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [443636943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:57:35,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:57:35,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 17:57:35,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614874483] [2023-12-02 17:57:35,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:57:35,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 17:57:35,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:57:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 17:57:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 17:57:35,442 INFO L87 Difference]: Start difference. First operand 391 states and 586 transitions. Second operand has 33 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-02 17:58:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:58:06,332 INFO L93 Difference]: Finished difference Result 797 states and 1226 transitions. [2023-12-02 17:58:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 17:58:06,333 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 79 [2023-12-02 17:58:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:58:06,337 INFO L225 Difference]: With dead ends: 797 [2023-12-02 17:58:06,338 INFO L226 Difference]: Without dead ends: 483 [2023-12-02 17:58:06,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 135.4s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 17:58:06,340 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 60 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 3777 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 3787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:58:06,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3400 Invalid, 3787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3777 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time] [2023-12-02 17:58:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-12-02 17:58:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 427. [2023-12-02 17:58:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 294 states have (on average 1.4387755102040816) internal successors, (423), 298 states have internal predecessors, (423), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2023-12-02 17:58:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 634 transitions. [2023-12-02 17:58:06,596 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 634 transitions. Word has length 79 [2023-12-02 17:58:06,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:58:06,596 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 634 transitions. [2023-12-02 17:58:06,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-02 17:58:06,597 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 634 transitions. [2023-12-02 17:58:06,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 17:58:06,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:58:06,600 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:58:06,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:58:06,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 17:58:06,801 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:58:06,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:58:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1742605108, now seen corresponding path program 1 times [2023-12-02 17:58:06,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:58:06,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540248135] [2023-12-02 17:58:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:06,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:58:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:58:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:58:06,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:58:06,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540248135] [2023-12-02 17:58:06,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540248135] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:58:06,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865407158] [2023-12-02 17:58:06,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:06,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:58:06,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:58:06,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:58:06,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:58:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:58:07,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:58:07,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:58:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:58:07,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:58:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:58:07,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865407158] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:58:07,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1135947706] [2023-12-02 17:58:07,348 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2023-12-02 17:58:07,349 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:58:07,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:58:07,349 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:58:07,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:59:09,922 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 17:59:10,159 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 227 for LOIs [2023-12-02 17:59:10,336 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:00:13,907 WARN L293 SmtUtils]: Spent 10.66s on a formula simplification. DAG size of input: 515 DAG size of output: 515 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:00:25,091 WARN L293 SmtUtils]: Spent 10.82s on a formula simplification. DAG size of input: 516 DAG size of output: 515 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 18:01:11,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1135947706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:11,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:01:11,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 18:01:11,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341700365] [2023-12-02 18:01:11,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:11,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 18:01:11,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:11,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 18:01:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 18:01:11,579 INFO L87 Difference]: Start difference. First operand 427 states and 634 transitions. Second operand has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 18:01:29,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:29,197 INFO L93 Difference]: Finished difference Result 811 states and 1241 transitions. [2023-12-02 18:01:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 18:01:29,199 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 78 [2023-12-02 18:01:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:29,201 INFO L225 Difference]: With dead ends: 811 [2023-12-02 18:01:29,202 INFO L226 Difference]: Without dead ends: 497 [2023-12-02 18:01:29,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 124.9s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 18:01:29,203 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 89 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:29,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 2965 Invalid, 2689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-12-02 18:01:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-02 18:01:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 447. [2023-12-02 18:01:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 314 states have (on average 1.4426751592356688) internal successors, (453), 318 states have internal predecessors, (453), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2023-12-02 18:01:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 664 transitions. [2023-12-02 18:01:29,404 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 664 transitions. Word has length 78 [2023-12-02 18:01:29,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:29,404 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 664 transitions. [2023-12-02 18:01:29,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 18:01:29,404 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 664 transitions. [2023-12-02 18:01:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 18:01:29,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:29,406 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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] [2023-12-02 18:01:29,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 18:01:29,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 18:01:29,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:01:29,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1746052270, now seen corresponding path program 1 times [2023-12-02 18:01:29,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:29,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013883034] [2023-12-02 18:01:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:29,809 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 18:01:29,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:29,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013883034] [2023-12-02 18:01:29,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013883034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:29,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:29,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:01:29,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131384355] [2023-12-02 18:01:29,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:29,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:01:29,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:29,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:01:29,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:01:29,812 INFO L87 Difference]: Start difference. First operand 447 states and 664 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 18:01:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:30,235 INFO L93 Difference]: Finished difference Result 572 states and 820 transitions. [2023-12-02 18:01:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:01:30,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2023-12-02 18:01:30,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:30,240 INFO L225 Difference]: With dead ends: 572 [2023-12-02 18:01:30,240 INFO L226 Difference]: Without dead ends: 489 [2023-12-02 18:01:30,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 18:01:30,242 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 142 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:30,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 293 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:01:30,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-02 18:01:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 488. [2023-12-02 18:01:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 335 states have (on average 1.4208955223880597) internal successors, (476), 341 states have internal predecessors, (476), 118 states have call successors, (118), 36 states have call predecessors, (118), 34 states have return successors, (116), 113 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-02 18:01:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 710 transitions. [2023-12-02 18:01:30,493 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 710 transitions. Word has length 81 [2023-12-02 18:01:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:30,493 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 710 transitions. [2023-12-02 18:01:30,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 18:01:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 710 transitions. [2023-12-02 18:01:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 18:01:30,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:30,498 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:30,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 18:01:30,498 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:01:30,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1258447177, now seen corresponding path program 1 times [2023-12-02 18:01:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:30,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703245024] [2023-12-02 18:01:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:30,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-02 18:01:31,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703245024] [2023-12-02 18:01:31,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703245024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:31,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:31,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 18:01:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401813400] [2023-12-02 18:01:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:31,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 18:01:31,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 18:01:31,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:01:31,092 INFO L87 Difference]: Start difference. First operand 488 states and 710 transitions. Second operand has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-12-02 18:01:32,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:32,383 INFO L93 Difference]: Finished difference Result 937 states and 1345 transitions. [2023-12-02 18:01:32,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:01:32,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 126 [2023-12-02 18:01:32,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:32,390 INFO L225 Difference]: With dead ends: 937 [2023-12-02 18:01:32,390 INFO L226 Difference]: Without dead ends: 818 [2023-12-02 18:01:32,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-02 18:01:32,393 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 329 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:32,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1430 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 18:01:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-02 18:01:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 809. [2023-12-02 18:01:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 539 states have (on average 1.4341372912801484) internal successors, (773), 550 states have internal predecessors, (773), 210 states have call successors, (210), 63 states have call predecessors, (210), 59 states have return successors, (205), 201 states have call predecessors, (205), 205 states have call successors, (205) [2023-12-02 18:01:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1188 transitions. [2023-12-02 18:01:32,962 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1188 transitions. Word has length 126 [2023-12-02 18:01:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:32,962 INFO L495 AbstractCegarLoop]: Abstraction has 809 states and 1188 transitions. [2023-12-02 18:01:32,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-12-02 18:01:32,963 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1188 transitions. [2023-12-02 18:01:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 18:01:32,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:32,968 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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 18:01:32,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 18:01:32,969 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:01:32,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1356475194, now seen corresponding path program 1 times [2023-12-02 18:01:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:32,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782671743] [2023-12-02 18:01:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:32,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-02 18:01:33,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:33,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782671743] [2023-12-02 18:01:33,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782671743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:33,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:33,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 18:01:33,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351730097] [2023-12-02 18:01:33,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:33,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:01:33,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:33,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:01:33,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:01:33,350 INFO L87 Difference]: Start difference. First operand 809 states and 1188 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-02 18:01:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:34,262 INFO L93 Difference]: Finished difference Result 1120 states and 1572 transitions. [2023-12-02 18:01:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:01:34,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 121 [2023-12-02 18:01:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:34,270 INFO L225 Difference]: With dead ends: 1120 [2023-12-02 18:01:34,270 INFO L226 Difference]: Without dead ends: 934 [2023-12-02 18:01:34,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:01:34,273 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 248 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:34,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 455 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:01:34,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2023-12-02 18:01:34,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 926. [2023-12-02 18:01:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 600 states have (on average 1.4066666666666667) internal successors, (844), 619 states have internal predecessors, (844), 245 states have call successors, (245), 82 states have call predecessors, (245), 80 states have return successors, (243), 233 states have call predecessors, (243), 239 states have call successors, (243) [2023-12-02 18:01:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1332 transitions. [2023-12-02 18:01:34,614 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1332 transitions. Word has length 121 [2023-12-02 18:01:34,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:34,615 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1332 transitions. [2023-12-02 18:01:34,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-02 18:01:34,615 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1332 transitions. [2023-12-02 18:01:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 18:01:34,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:34,620 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 18:01:34,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 18:01:34,621 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:01:34,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:34,621 INFO L85 PathProgramCache]: Analyzing trace with hash 19595957, now seen corresponding path program 1 times [2023-12-02 18:01:34,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:34,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128875777] [2023-12-02 18:01:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 18:01:34,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:34,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128875777] [2023-12-02 18:01:34,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128875777] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:01:34,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044773900] [2023-12-02 18:01:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:34,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:34,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:01:34,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:01:34,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db24165-0590-47b5-92de-cddb133584b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:01:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:35,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:01:35,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 18:01:35,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 18:01:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044773900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1009812380] [2023-12-02 18:01:35,334 INFO L159 IcfgInterpreter]: Started Sifa with 101 locations of interest [2023-12-02 18:01:35,334 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:01:35,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:01:35,335 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:01:35,335 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs