./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2 --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 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:23:20,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:23:20,259 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 11:23:20,265 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:23:20,265 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:23:20,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:23:20,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:23:20,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:23:20,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:23:20,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:23:20,308 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:23:20,309 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:23:20,309 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:23:20,310 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:23:20,310 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:23:20,311 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:23:20,311 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:23:20,312 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:23:20,312 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:23:20,313 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:23:20,313 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:23:20,316 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:23:20,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:23:20,317 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:23:20,318 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:23:20,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:23:20,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:23:20,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:23:20,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:23:20,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:23:20,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:23:20,319 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:23:20,320 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:23:20,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:23:20,321 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:23:20,321 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:23:20,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:23:20,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:23:20,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:20,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:23:20,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:23:20,324 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:23:20,324 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:23:20,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:23:20,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:23:20,325 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:23:20,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:23:20,326 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_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e977513fd5d8adeea8c73d7c4eeb6cb821e6c768a15a7e6394764a4355fc74d [2024-11-02 11:23:20,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:23:20,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:23:20,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:23:20,694 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:23:20,695 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:23:20,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/email_spec11_product33.cil.c Unable to find full path for "g++" [2024-11-02 11:23:22,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:23:23,106 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:23:23,106 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c [2024-11-02 11:23:23,132 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/data/43c3f4f53/59092d9e2d2344618e2c6df4bfe54274/FLAG00114849e [2024-11-02 11:23:23,335 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/data/43c3f4f53/59092d9e2d2344618e2c6df4bfe54274 [2024-11-02 11:23:23,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:23:23,341 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:23:23,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:23,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:23:23,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:23:23,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:23" (1/1) ... [2024-11-02 11:23:23,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748c2ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:23, skipping insertion in model container [2024-11-02 11:23:23,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:23" (1/1) ... [2024-11-02 11:23:23,444 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:23:24,160 WARN L251 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_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2024-11-02 11:23:24,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:24,186 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:23:24,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2024-11-02 11:23:24,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1128] [2024-11-02 11:23:24,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1288] [2024-11-02 11:23:24,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1305] [2024-11-02 11:23:24,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1671] [2024-11-02 11:23:24,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2072] [2024-11-02 11:23:24,201 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [2469] [2024-11-02 11:23:24,201 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2489] [2024-11-02 11:23:24,201 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2788] [2024-11-02 11:23:24,202 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3007] [2024-11-02 11:23:24,202 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3042] [2024-11-02 11:23:24,349 WARN L251 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_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/sv-benchmarks/c/product-lines/email_spec11_product33.cil.c[64763,64776] [2024-11-02 11:23:24,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:24,389 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:23:24,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24 WrapperNode [2024-11-02 11:23:24,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:24,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:24,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:23:24,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:23:24,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,496 INFO L138 Inliner]: procedures = 134, calls = 211, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1073 [2024-11-02 11:23:24,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:24,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:23:24,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:23:24,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:23:24,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,515 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,515 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,536 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,550 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:23:24,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:23:24,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:23:24,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:23:24,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (1/1) ... [2024-11-02 11:23:24,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:24,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:24,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:23:24,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:23:24,640 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-02 11:23:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-02 11:23:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-02 11:23:24,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-02 11:23:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-02 11:23:24,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-02 11:23:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-02 11:23:24,642 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-02 11:23:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-02 11:23:24,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-02 11:23:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-02 11:23:24,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-02 11:23:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-02 11:23:24,643 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-02 11:23:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-02 11:23:24,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-02 11:23:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-02 11:23:24,643 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-02 11:23:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-02 11:23:24,644 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-02 11:23:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-02 11:23:24,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-02 11:23:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-11-02 11:23:24,647 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-11-02 11:23:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-02 11:23:24,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-02 11:23:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:23:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-02 11:23:24,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-02 11:23:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-02 11:23:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-02 11:23:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-02 11:23:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-02 11:23:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-02 11:23:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-02 11:23:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-02 11:23:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-02 11:23:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-02 11:23:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-02 11:23:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-02 11:23:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-02 11:23:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-02 11:23:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-02 11:23:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-02 11:23:24,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-02 11:23:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-02 11:23:24,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-02 11:23:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:23:24,654 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-02 11:23:24,655 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-02 11:23:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:23:24,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:23:24,943 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:23:24,945 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:23:26,245 INFO L? ?]: Removed 500 outVars from TransFormulas that were not future-live. [2024-11-02 11:23:26,246 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:23:27,007 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:23:27,007 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 11:23:27,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:27 BoogieIcfgContainer [2024-11-02 11:23:27,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:23:27,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:23:27,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:23:27,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:23:27,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:23:23" (1/3) ... [2024-11-02 11:23:27,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489f589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:27, skipping insertion in model container [2024-11-02 11:23:27,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:24" (2/3) ... [2024-11-02 11:23:27,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489f589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:27, skipping insertion in model container [2024-11-02 11:23:27,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:27" (3/3) ... [2024-11-02 11:23:27,019 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product33.cil.c [2024-11-02 11:23:27,038 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:23:27,039 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 11:23:27,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:23:27,139 INFO L333 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, 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;@c84be9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:23:27,140 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 11:23:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-02 11:23:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-02 11:23:27,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:27,159 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:27,160 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:27,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1390725333, now seen corresponding path program 1 times [2024-11-02 11:23:27,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:27,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262080299] [2024-11-02 11:23:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:27,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 11:23:27,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:27,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262080299] [2024-11-02 11:23:27,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262080299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:27,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:27,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:23:27,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060483976] [2024-11-02 11:23:27,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:27,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 11:23:27,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:27,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 11:23:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 11:23:27,836 INFO L87 Difference]: Start difference. First operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 11:23:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:28,005 INFO L93 Difference]: Finished difference Result 335 states and 442 transitions. [2024-11-02 11:23:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 11:23:28,009 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88 [2024-11-02 11:23:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:28,022 INFO L225 Difference]: With dead ends: 335 [2024-11-02 11:23:28,023 INFO L226 Difference]: Without dead ends: 206 [2024-11-02 11:23:28,028 INFO L431 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 [2024-11-02 11:23:28,032 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:28,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:23:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-02 11:23:28,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-02 11:23:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 122 states have internal predecessors, (152), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-02 11:23:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 275 transitions. [2024-11-02 11:23:28,117 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 275 transitions. Word has length 88 [2024-11-02 11:23:28,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:28,119 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 275 transitions. [2024-11-02 11:23:28,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 11:23:28,120 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 275 transitions. [2024-11-02 11:23:28,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-02 11:23:28,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:28,125 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:28,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:23:28,126 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:28,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1645684653, now seen corresponding path program 1 times [2024-11-02 11:23:28,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:28,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607180797] [2024-11-02 11:23:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:28,526 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 11:23:28,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:28,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607180797] [2024-11-02 11:23:28,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607180797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:28,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:28,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:23:28,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580252084] [2024-11-02 11:23:28,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:28,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:23:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:23:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:23:28,536 INFO L87 Difference]: Start difference. First operand 206 states and 275 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 11:23:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:28,749 INFO L93 Difference]: Finished difference Result 331 states and 430 transitions. [2024-11-02 11:23:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:23:28,752 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2024-11-02 11:23:28,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:28,758 INFO L225 Difference]: With dead ends: 331 [2024-11-02 11:23:28,758 INFO L226 Difference]: Without dead ends: 208 [2024-11-02 11:23:28,759 INFO L431 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 [2024-11-02 11:23:28,761 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:28,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 11:23:28,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-02 11:23:28,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-11-02 11:23:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 124 states have internal predecessors, (154), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-02 11:23:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 277 transitions. [2024-11-02 11:23:28,820 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 277 transitions. Word has length 89 [2024-11-02 11:23:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:28,825 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 277 transitions. [2024-11-02 11:23:28,825 INFO L472 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 11:23:28,825 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 277 transitions. [2024-11-02 11:23:28,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-02 11:23:28,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:28,832 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:28,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 11:23:28,833 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:28,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1440522376, now seen corresponding path program 1 times [2024-11-02 11:23:28,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:28,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264374935] [2024-11-02 11:23:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:28,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 11:23:29,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:29,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264374935] [2024-11-02 11:23:29,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264374935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:29,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:29,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:23:29,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852189561] [2024-11-02 11:23:29,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:29,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:23:29,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:29,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:23:29,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:23:29,025 INFO L87 Difference]: Start difference. First operand 208 states and 277 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 11:23:29,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:29,185 INFO L93 Difference]: Finished difference Result 446 states and 613 transitions. [2024-11-02 11:23:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:23:29,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2024-11-02 11:23:29,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:29,189 INFO L225 Difference]: With dead ends: 446 [2024-11-02 11:23:29,189 INFO L226 Difference]: Without dead ends: 256 [2024-11-02 11:23:29,194 INFO L431 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 [2024-11-02 11:23:29,196 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 57 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:29,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 479 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:23:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-02 11:23:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2024-11-02 11:23:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 156 states have internal predecessors, (207), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-02 11:23:29,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 352 transitions. [2024-11-02 11:23:29,244 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 352 transitions. Word has length 94 [2024-11-02 11:23:29,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:29,244 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 352 transitions. [2024-11-02 11:23:29,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 11:23:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 352 transitions. [2024-11-02 11:23:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-02 11:23:29,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:29,251 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:29,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 11:23:29,251 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:29,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:29,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1694729465, now seen corresponding path program 1 times [2024-11-02 11:23:29,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:29,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916407725] [2024-11-02 11:23:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:29,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 11:23:29,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:29,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916407725] [2024-11-02 11:23:29,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916407725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:23:29,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011561879] [2024-11-02 11:23:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:29,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:29,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:29,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:23:29,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9399c69c-4995-4d6e-9ef2-722f6af3c7b7/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 11:23:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:30,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 11:23:30,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:23:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 11:23:30,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:23:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 11:23:30,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011561879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:23:30,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [847210925] [2024-11-02 11:23:30,429 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2024-11-02 11:23:30,429 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:23:30,434 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 11:23:30,440 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 11:23:30,440 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs