./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product28.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_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/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_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/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_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/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 f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:23:25,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:23:26,005 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:23:26,009 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:23:26,010 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:23:26,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:23:26,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:23:26,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:23:26,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:23:26,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:23:26,033 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:23:26,034 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:23:26,034 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:23:26,034 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:23:26,035 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:23:26,035 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:23:26,036 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:23:26,036 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:23:26,037 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:23:26,037 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:23:26,038 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:23:26,039 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:23:26,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:23:26,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:23:26,041 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:23:26,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:23:26,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:23:26,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:23:26,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:23:26,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:23:26,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:23:26,043 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:23:26,043 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:23:26,043 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:23:26,044 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:23:26,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:23:26,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:23:26,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:23:26,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:23:26,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:23:26,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:23:26,045 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:23:26,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:23:26,045 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:23:26,046 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:23:26,046 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:23:26,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:23:26,046 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_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a [2023-12-02 12:23:26,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:23:26,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:23:26,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:23:26,267 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:23:26,268 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:23:26,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2023-12-02 12:23:28,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:23:29,227 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:23:29,227 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2023-12-02 12:23:29,248 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/data/9040ae185/c1997a681b0c46e5a9a99f1ff6c12ee6/FLAGc1d9b31e1 [2023-12-02 12:23:29,263 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/data/9040ae185/c1997a681b0c46e5a9a99f1ff6c12ee6 [2023-12-02 12:23:29,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:23:29,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:23:29,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:23:29,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:23:29,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:23:29,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:23:29" (1/1) ... [2023-12-02 12:23:29,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148d12a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:29, skipping insertion in model container [2023-12-02 12:23:29,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:23:29" (1/1) ... [2023-12-02 12:23:29,371 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:23:29,530 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_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2023-12-02 12:23:29,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:23:29,868 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:23:29,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-12-02 12:23:29,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [57] [2023-12-02 12:23:29,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [217] [2023-12-02 12:23:29,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [255] [2023-12-02 12:23:29,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [591] [2023-12-02 12:23:29,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [871] [2023-12-02 12:23:29,881 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptVerify_spec.i","") [1084] [2023-12-02 12:23:29,882 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1102] [2023-12-02 12:23:29,882 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1468] [2023-12-02 12:23:29,882 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1485] [2023-12-02 12:23:29,882 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2554] [2023-12-02 12:23:29,885 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_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2023-12-02 12:23:30,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:23:30,029 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:23:30,034 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:23:30,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30 WrapperNode [2023-12-02 12:23:30,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:23:30,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:23:30,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:23:30,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:23:30,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,101 INFO L138 Inliner]: procedures = 128, calls = 205, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 857 [2023-12-02 12:23:30,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:23:30,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:23:30,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:23:30,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:23:30,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:23:30,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:23:30,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:23:30,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:23:30,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (1/1) ... [2023-12-02 12:23:30,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:23:30,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:23:30,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:23:30,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:23:30,232 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 12:23:30,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 12:23:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 12:23:30,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 12:23:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 12:23:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 12:23:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 12:23:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 12:23:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 12:23:30,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 12:23:30,234 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 12:23:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 12:23:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 12:23:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 12:23:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 12:23:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 12:23:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 12:23:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 12:23:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 12:23:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 12:23:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 12:23:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 12:23:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 12:23:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 12:23:30,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 12:23:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:23:30,237 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 12:23:30,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 12:23:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 12:23:30,238 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 12:23:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 12:23:30,238 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 12:23:30,238 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 12:23:30,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 12:23:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 12:23:30,239 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 12:23:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 12:23:30,239 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 12:23:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 12:23:30,240 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 12:23:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 12:23:30,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 12:23:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 12:23:30,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 12:23:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:23:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 12:23:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 12:23:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:23:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:23:30,418 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:23:30,421 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:23:31,047 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:23:31,470 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:23:31,471 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 12:23:31,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:31 BoogieIcfgContainer [2023-12-02 12:23:31,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:23:31,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:23:31,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:23:31,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:23:31,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:23:29" (1/3) ... [2023-12-02 12:23:31,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd09b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:23:31, skipping insertion in model container [2023-12-02 12:23:31,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:30" (2/3) ... [2023-12-02 12:23:31,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd09b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:23:31, skipping insertion in model container [2023-12-02 12:23:31,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:31" (3/3) ... [2023-12-02 12:23:31,481 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product28.cil.c [2023-12-02 12:23:31,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:23:31,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:23:31,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:23:31,569 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;@3c08934c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:23:31,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:23:31,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 104 states have (on average 1.3365384615384615) internal successors, (139), 108 states have internal predecessors, (139), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-02 12:23:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 12:23:31,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:31,591 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:23:31,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:31,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:31,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1955028261, now seen corresponding path program 1 times [2023-12-02 12:23:31,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:31,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856602185] [2023-12-02 12:23:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:31,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:23:31,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:31,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856602185] [2023-12-02 12:23:31,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856602185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:23:31,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:23:31,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:23:31,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197379672] [2023-12-02 12:23:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:23:31,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:23:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:23:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:23:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:23:31,991 INFO L87 Difference]: Start difference. First operand has 177 states, 104 states have (on average 1.3365384615384615) internal successors, (139), 108 states have internal predecessors, (139), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 12:23:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:23:32,106 INFO L93 Difference]: Finished difference Result 271 states and 352 transitions. [2023-12-02 12:23:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:23:32,108 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 74 [2023-12-02 12:23:32,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:23:32,120 INFO L225 Difference]: With dead ends: 271 [2023-12-02 12:23:32,121 INFO L226 Difference]: Without dead ends: 174 [2023-12-02 12:23:32,125 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 12:23:32,129 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:23:32,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:23:32,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-02 12:23:32,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-12-02 12:23:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 102 states have (on average 1.303921568627451) internal successors, (133), 105 states have internal predecessors, (133), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 12:23:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2023-12-02 12:23:32,187 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 74 [2023-12-02 12:23:32,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:23:32,189 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2023-12-02 12:23:32,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 12:23:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2023-12-02 12:23:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 12:23:32,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:32,195 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:23:32,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:23:32,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:32,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:32,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1144104391, now seen corresponding path program 1 times [2023-12-02 12:23:32,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:32,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428420203] [2023-12-02 12:23:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:32,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:23:32,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:32,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428420203] [2023-12-02 12:23:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428420203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:23:32,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:23:32,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:23:32,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440136191] [2023-12-02 12:23:32,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:23:32,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:23:32,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:23:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:23:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:23:32,409 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 12:23:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:23:32,506 INFO L93 Difference]: Finished difference Result 267 states and 340 transitions. [2023-12-02 12:23:32,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:23:32,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2023-12-02 12:23:32,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:23:32,509 INFO L225 Difference]: With dead ends: 267 [2023-12-02 12:23:32,510 INFO L226 Difference]: Without dead ends: 176 [2023-12-02 12:23:32,511 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 12:23:32,513 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:23:32,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 401 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:23:32,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-02 12:23:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-12-02 12:23:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 107 states have internal predecessors, (135), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 12:23:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 232 transitions. [2023-12-02 12:23:32,535 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 232 transitions. Word has length 75 [2023-12-02 12:23:32,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:23:32,535 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 232 transitions. [2023-12-02 12:23:32,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 12:23:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 232 transitions. [2023-12-02 12:23:32,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 12:23:32,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:32,553 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-12-02 12:23:32,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:23:32,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:32,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2042618180, now seen corresponding path program 1 times [2023-12-02 12:23:32,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:32,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3427475] [2023-12-02 12:23:32,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:32,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:23:32,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3427475] [2023-12-02 12:23:32,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3427475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:23:32,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:23:32,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:23:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663122465] [2023-12-02 12:23:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:23:32,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:23:32,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:23:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:23:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:23:32,686 INFO L87 Difference]: Start difference. First operand 176 states and 232 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 12:23:32,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:23:32,790 INFO L93 Difference]: Finished difference Result 382 states and 523 transitions. [2023-12-02 12:23:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:23:32,790 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2023-12-02 12:23:32,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:23:32,793 INFO L225 Difference]: With dead ends: 382 [2023-12-02 12:23:32,793 INFO L226 Difference]: Without dead ends: 224 [2023-12-02 12:23:32,795 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 12:23:32,796 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 57 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:23:32,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 411 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:23:32,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-02 12:23:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2023-12-02 12:23:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 139 states have internal predecessors, (188), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-02 12:23:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 307 transitions. [2023-12-02 12:23:32,818 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 307 transitions. Word has length 80 [2023-12-02 12:23:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:23:32,818 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 307 transitions. [2023-12-02 12:23:32,819 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 12:23:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 307 transitions. [2023-12-02 12:23:32,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 12:23:32,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:23:32,821 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-12-02 12:23:32,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 12:23:32,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:23:32,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:23:32,822 INFO L85 PathProgramCache]: Analyzing trace with hash -591039971, now seen corresponding path program 1 times [2023-12-02 12:23:32,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:23:32,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746160970] [2023-12-02 12:23:32,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:32,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:23:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:23:33,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:23:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746160970] [2023-12-02 12:23:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746160970] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:23:33,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742345948] [2023-12-02 12:23:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:23:33,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:23:33,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:23:33,005 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:23:33,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:23:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:23:33,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:23:33,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:23:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:23:33,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:23:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:23:33,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742345948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:23:33,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1299283] [2023-12-02 12:23:33,520 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2023-12-02 12:23:33,520 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:23:33,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:23:33,529 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:23:33,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:24:17,148 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 12:24:17,370 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 12:24:17,540 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:25:10,305 WARN L293 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 485 DAG size of output: 485 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:25:23,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1299283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:25:23,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:25:23,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 12:25:23,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237296151] [2023-12-02 12:25:23,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:25:23,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 12:25:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:25:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 12:25:23,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2023-12-02 12:25:23,741 INFO L87 Difference]: Start difference. First operand 219 states and 307 transitions. Second operand has 24 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-02 12:25:36,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:25:36,717 INFO L93 Difference]: Finished difference Result 483 states and 710 transitions. [2023-12-02 12:25:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 12:25:36,718 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 81 [2023-12-02 12:25:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:25:36,721 INFO L225 Difference]: With dead ends: 483 [2023-12-02 12:25:36,721 INFO L226 Difference]: Without dead ends: 282 [2023-12-02 12:25:36,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 69.3s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2023-12-02 12:25:36,723 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 112 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:25:36,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2884 Invalid, 2267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-02 12:25:36,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-02 12:25:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 242. [2023-12-02 12:25:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 158 states have (on average 1.3987341772151898) internal successors, (221), 161 states have internal predecessors, (221), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-02 12:25:36,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 340 transitions. [2023-12-02 12:25:36,803 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 340 transitions. Word has length 81 [2023-12-02 12:25:36,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:25:36,804 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 340 transitions. [2023-12-02 12:25:36,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-02 12:25:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 340 transitions. [2023-12-02 12:25:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 12:25:36,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:25:36,807 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:25:36,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:25:37,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:25:37,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:25:37,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:25:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1646403951, now seen corresponding path program 1 times [2023-12-02 12:25:37,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:25:37,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895872974] [2023-12-02 12:25:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:25:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:25:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 12:25:37,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:25:37,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895872974] [2023-12-02 12:25:37,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895872974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:25:37,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:25:37,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:25:37,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849712503] [2023-12-02 12:25:37,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:25:37,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:25:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:25:37,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:25:37,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:25:37,107 INFO L87 Difference]: Start difference. First operand 242 states and 340 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 12:25:37,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:25:37,291 INFO L93 Difference]: Finished difference Result 577 states and 844 transitions. [2023-12-02 12:25:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:25:37,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 86 [2023-12-02 12:25:37,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:25:37,294 INFO L225 Difference]: With dead ends: 577 [2023-12-02 12:25:37,295 INFO L226 Difference]: Without dead ends: 359 [2023-12-02 12:25:37,295 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 12:25:37,296 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 55 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:25:37,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 412 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:25:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-02 12:25:37,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 354. [2023-12-02 12:25:37,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 245 states have (on average 1.457142857142857) internal successors, (357), 248 states have internal predecessors, (357), 85 states have call successors, (85), 23 states have call predecessors, (85), 23 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-02 12:25:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 526 transitions. [2023-12-02 12:25:37,388 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 526 transitions. Word has length 86 [2023-12-02 12:25:37,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:25:37,389 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 526 transitions. [2023-12-02 12:25:37,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 12:25:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 526 transitions. [2023-12-02 12:25:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 12:25:37,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:25:37,392 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:25:37,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 12:25:37,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:25:37,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:25:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash -244218929, now seen corresponding path program 1 times [2023-12-02 12:25:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:25:37,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999136895] [2023-12-02 12:25:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:37,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:25:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:25:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 12:25:37,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:25:37,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999136895] [2023-12-02 12:25:37,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999136895] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:25:37,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522252711] [2023-12-02 12:25:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:37,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:25:37,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:25:37,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:25:37,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 12:25:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:25:37,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:25:37,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:25:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 12:25:37,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:25:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 12:25:37,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522252711] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:25:37,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [58886843] [2023-12-02 12:25:37,922 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2023-12-02 12:25:37,922 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:25:37,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:25:37,923 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:25:37,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:26:35,813 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 12:26:36,031 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 466 for LOIs [2023-12-02 12:26:38,056 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:26:57,543 WARN L293 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 466 DAG size of output: 466 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:27:06,524 WARN L293 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 496 DAG size of output: 492 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:27:43,345 WARN L293 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 489 DAG size of output: 489 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:27:52,489 WARN L293 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 489 DAG size of output: 489 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:28:02,137 WARN L293 SmtUtils]: Spent 9.27s on a formula simplification. DAG size of input: 495 DAG size of output: 495 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:28:11,866 WARN L293 SmtUtils]: Spent 9.32s on a formula simplification. DAG size of input: 493 DAG size of output: 493 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:28:21,567 WARN L293 SmtUtils]: Spent 9.28s on a formula simplification. DAG size of input: 497 DAG size of output: 497 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:28:31,222 WARN L293 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 495 DAG size of output: 495 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:28:41,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [58886843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:28:41,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:28:41,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 12:28:41,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806889316] [2023-12-02 12:28:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:28:41,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 12:28:41,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:28:41,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 12:28:41,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 12:28:41,784 INFO L87 Difference]: Start difference. First operand 354 states and 526 transitions. Second operand has 28 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-02 12:28:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:28:58,061 INFO L93 Difference]: Finished difference Result 724 states and 1105 transitions. [2023-12-02 12:28:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 12:28:58,062 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 87 [2023-12-02 12:28:58,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:28:58,065 INFO L225 Difference]: With dead ends: 724 [2023-12-02 12:28:58,065 INFO L226 Difference]: Without dead ends: 433 [2023-12-02 12:28:58,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 126.9s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 12:28:58,067 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 145 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:28:58,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 2784 Invalid, 2510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2023-12-02 12:28:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-02 12:28:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 368. [2023-12-02 12:28:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 257 states have (on average 1.4552529182879377) internal successors, (374), 260 states have internal predecessors, (374), 86 states have call successors, (86), 24 states have call predecessors, (86), 24 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 12:28:58,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 545 transitions. [2023-12-02 12:28:58,173 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 545 transitions. Word has length 87 [2023-12-02 12:28:58,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:28:58,174 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 545 transitions. [2023-12-02 12:28:58,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-02 12:28:58,174 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 545 transitions. [2023-12-02 12:28:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 12:28:58,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:28:58,177 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:28:58,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 12:28:58,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:28:58,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:28:58,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:28:58,378 INFO L85 PathProgramCache]: Analyzing trace with hash -794223065, now seen corresponding path program 1 times [2023-12-02 12:28:58,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:28:58,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790038790] [2023-12-02 12:28:58,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:28:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:28:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:28:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:28:58,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:28:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790038790] [2023-12-02 12:28:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790038790] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:28:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255327102] [2023-12-02 12:28:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:28:58,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:28:58,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:28:58,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:28:58,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 12:28:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:28:58,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:28:58,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:28:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:28:58,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:28:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:28:58,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255327102] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:28:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1685350709] [2023-12-02 12:28:58,953 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2023-12-02 12:28:58,953 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:28:58,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:28:58,954 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:28:58,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:30:15,886 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 12:30:16,104 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 533 for LOIs [2023-12-02 12:30:17,832 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 232 for LOIs [2023-12-02 12:30:18,070 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 457 for LOIs [2023-12-02 12:30:18,666 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 12:30:18,826 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:31:11,805 WARN L293 SmtUtils]: Spent 9.97s on a formula simplification. DAG size of input: 570 DAG size of output: 565 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:31:22,526 WARN L293 SmtUtils]: Spent 10.33s on a formula simplification. DAG size of input: 570 DAG size of output: 565 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:31:56,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1685350709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:31:56,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:31:56,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 12:31:56,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544939736] [2023-12-02 12:31:56,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:31:56,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 12:31:56,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:31:56,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 12:31:56,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 12:31:56,070 INFO L87 Difference]: Start difference. First operand 368 states and 545 transitions. Second operand has 32 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2023-12-02 12:32:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:32:17,630 INFO L93 Difference]: Finished difference Result 753 states and 1146 transitions. [2023-12-02 12:32:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 12:32:17,631 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 90 [2023-12-02 12:32:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:32:17,635 INFO L225 Difference]: With dead ends: 753 [2023-12-02 12:32:17,635 INFO L226 Difference]: Without dead ends: 462 [2023-12-02 12:32:17,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 100.4s TimeCoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 12:32:17,638 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 60 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 3615 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:32:17,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3644 Invalid, 3627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 3615 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2023-12-02 12:32:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-02 12:32:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 404. [2023-12-02 12:32:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 287 states have (on average 1.4494773519163764) internal successors, (416), 290 states have internal predecessors, (416), 89 states have call successors, (89), 27 states have call predecessors, (89), 27 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-02 12:32:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 593 transitions. [2023-12-02 12:32:17,796 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 593 transitions. Word has length 90 [2023-12-02 12:32:17,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:32:17,797 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 593 transitions. [2023-12-02 12:32:17,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2023-12-02 12:32:17,797 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 593 transitions. [2023-12-02 12:32:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 12:32:17,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:32:17,800 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:32:17,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 12:32:18,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:18,000 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:32:18,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:32:18,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1982559162, now seen corresponding path program 1 times [2023-12-02 12:32:18,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:32:18,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246712217] [2023-12-02 12:32:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:32:18,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:32:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:32:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:32:18,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:32:18,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246712217] [2023-12-02 12:32:18,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246712217] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:32:18,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338401485] [2023-12-02 12:32:18,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:32:18,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:32:18,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:32:18,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:32:18,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 12:32:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:32:18,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:32:18,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:32:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:32:18,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:32:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 12:32:18,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338401485] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:32:18,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1580062938] [2023-12-02 12:32:18,470 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2023-12-02 12:32:18,470 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:32:18,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:32:18,471 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:32:18,471 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:33:41,457 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 12:33:41,674 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 12:33:41,835 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:34:34,857 WARN L293 SmtUtils]: Spent 8.99s on a formula simplification. DAG size of input: 493 DAG size of output: 493 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:34:44,630 WARN L293 SmtUtils]: Spent 9.46s on a formula simplification. DAG size of input: 493 DAG size of output: 493 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:34:55,191 WARN L293 SmtUtils]: Spent 10.17s on a formula simplification. DAG size of input: 499 DAG size of output: 499 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:35:05,721 WARN L293 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 497 DAG size of output: 497 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:35:15,650 WARN L293 SmtUtils]: Spent 9.41s on a formula simplification. DAG size of input: 501 DAG size of output: 501 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:35:25,320 WARN L293 SmtUtils]: Spent 9.23s on a formula simplification. DAG size of input: 499 DAG size of output: 499 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:35:35,059 WARN L293 SmtUtils]: Spent 9.26s on a formula simplification. DAG size of input: 503 DAG size of output: 503 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:35:55,717 WARN L293 SmtUtils]: Spent 20.05s on a formula simplification. DAG size of input: 507 DAG size of output: 497 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:36:15,900 WARN L293 SmtUtils]: Spent 19.61s on a formula simplification. DAG size of input: 511 DAG size of output: 501 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:36:35,802 WARN L293 SmtUtils]: Spent 19.27s on a formula simplification. DAG size of input: 509 DAG size of output: 499 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:36:46,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1580062938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:36:46,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:36:46,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 12:36:46,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808998752] [2023-12-02 12:36:46,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:36:46,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 12:36:46,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:36:46,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 12:36:46,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 12:36:46,565 INFO L87 Difference]: Start difference. First operand 404 states and 593 transitions. Second operand has 32 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-02 12:37:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:37:02,006 INFO L93 Difference]: Finished difference Result 763 states and 1155 transitions. [2023-12-02 12:37:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 12:37:02,007 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 89 [2023-12-02 12:37:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:37:02,010 INFO L225 Difference]: With dead ends: 763 [2023-12-02 12:37:02,010 INFO L226 Difference]: Without dead ends: 472 [2023-12-02 12:37:02,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 187.9s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 12:37:02,012 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 84 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:37:02,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 3066 Invalid, 2643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-12-02 12:37:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-12-02 12:37:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 424. [2023-12-02 12:37:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 307 states have (on average 1.4527687296416938) internal successors, (446), 310 states have internal predecessors, (446), 89 states have call successors, (89), 27 states have call predecessors, (89), 27 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-02 12:37:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 623 transitions. [2023-12-02 12:37:02,181 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 623 transitions. Word has length 89 [2023-12-02 12:37:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:37:02,181 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 623 transitions. [2023-12-02 12:37:02,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-02 12:37:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 623 transitions. [2023-12-02 12:37:02,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 12:37:02,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:37:02,184 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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] [2023-12-02 12:37:02,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 12:37:02,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:02,384 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:37:02,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:37:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash -593907667, now seen corresponding path program 1 times [2023-12-02 12:37:02,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:37:02,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025472370] [2023-12-02 12:37:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:02,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:37:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 12:37:02,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:37:02,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025472370] [2023-12-02 12:37:02,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025472370] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:37:02,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687051112] [2023-12-02 12:37:02,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:37:02,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:37:02,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:37:02,500 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:37:02,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11d6644f-f271-42e8-bca9-fb0fe28c6c8f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 12:37:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:37:02,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:37:02,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:37:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 12:37:02,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:37:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 12:37:02,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687051112] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:37:02,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [837121123] [2023-12-02 12:37:02,880 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2023-12-02 12:37:02,880 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:37:02,881 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:37:02,881 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:37:02,881 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs