./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ --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 6dc52251d8599495e3d1910510992bf3863620ce75312360a12a1bf3bdfb6242 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:00,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:00,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:07:00,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:00,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:00,345 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:00,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:00,346 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:00,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:00,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:00,353 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:00,355 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:00,355 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:00,357 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:07:00,357 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:00,358 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:00,359 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:07:00,359 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:07:00,360 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:00,360 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:07:00,361 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:07:00,361 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:07:00,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:00,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:00,364 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:07:00,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:00,365 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:07:00,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:00,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:00,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:00,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:00,368 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:07:00,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:00,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:00,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:00,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:00,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:00,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:00,390 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:00,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:07:00,390 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:07:00,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:07:00,391 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:07:00,392 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:00,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:00,393 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_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dc52251d8599495e3d1910510992bf3863620ce75312360a12a1bf3bdfb6242 [2023-11-19 05:07:00,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:00,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:00,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:00,775 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:00,776 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:00,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/email_spec9_product33.cil.c [2023-11-19 05:07:03,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:04,236 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:04,237 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/sv-benchmarks/c/product-lines/email_spec9_product33.cil.c [2023-11-19 05:07:04,275 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/data/4fb1349e9/d6b8282b9f554d6693983b136a90416c/FLAGdb4d7c15b [2023-11-19 05:07:04,299 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/data/4fb1349e9/d6b8282b9f554d6693983b136a90416c [2023-11-19 05:07:04,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:04,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:04,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:04,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:04,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:04,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:04" (1/1) ... [2023-11-19 05:07:04,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638e5099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:04, skipping insertion in model container [2023-11-19 05:07:04,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:04" (1/1) ... [2023-11-19 05:07:04,437 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:05,015 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_d62ea418-54c0-45cd-a903-142b04cd7976/sv-benchmarks/c/product-lines/email_spec9_product33.cil.c[33566,33579] [2023-11-19 05:07:05,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:05,178 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:07:05,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2023-11-19 05:07:05,198 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [208] [2023-11-19 05:07:05,198 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [523] [2023-11-19 05:07:05,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptForward_spec.i","") [742] [2023-11-19 05:07:05,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [785] [2023-11-19 05:07:05,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1187] [2023-11-19 05:07:05,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1553] [2023-11-19 05:07:05,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1562] [2023-11-19 05:07:05,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1579] [2023-11-19 05:07:05,201 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1974] [2023-11-19 05:07:05,201 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3039] [2023-11-19 05:07:05,265 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_d62ea418-54c0-45cd-a903-142b04cd7976/sv-benchmarks/c/product-lines/email_spec9_product33.cil.c[33566,33579] [2023-11-19 05:07:05,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:05,361 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:07:05,368 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:07:05,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05 WrapperNode [2023-11-19 05:07:05,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:05,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:05,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:07:05,370 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:07:05,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,511 INFO L138 Inliner]: procedures = 135, calls = 233, calls flagged for inlining = 66, calls inlined = 61, statements flattened = 1094 [2023-11-19 05:07:05,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:05,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:07:05,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:07:05,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:07:05,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,564 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,607 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:07:05,608 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:07:05,608 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:07:05,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:07:05,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (1/1) ... [2023-11-19 05:07:05,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:05,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:05,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:07:05,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:07:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-19 05:07:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-19 05:07:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-19 05:07:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-19 05:07:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-19 05:07:05,758 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-19 05:07:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-19 05:07:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-19 05:07:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-19 05:07:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-19 05:07:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-19 05:07:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-19 05:07:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-19 05:07:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-19 05:07:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-19 05:07:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-19 05:07:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-19 05:07:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-19 05:07:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-19 05:07:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-19 05:07:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-19 05:07:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-19 05:07:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-19 05:07:05,768 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-19 05:07:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-19 05:07:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-19 05:07:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-19 05:07:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:07:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-19 05:07:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-19 05:07:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-19 05:07:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-19 05:07:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-19 05:07:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-19 05:07:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-19 05:07:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-19 05:07:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-19 05:07:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-19 05:07:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-19 05:07:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-19 05:07:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-19 05:07:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-19 05:07:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-19 05:07:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-19 05:07:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-19 05:07:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-19 05:07:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-19 05:07:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-19 05:07:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:07:05,775 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-19 05:07:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-19 05:07:05,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:07:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:07:06,061 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:07:06,064 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:07:07,161 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:07:07,895 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:07:07,896 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:07:07,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:07 BoogieIcfgContainer [2023-11-19 05:07:07,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:07:07,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:07:07,915 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:07:07,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:07:07,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:07:04" (1/3) ... [2023-11-19 05:07:07,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9a2aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:07, skipping insertion in model container [2023-11-19 05:07:07,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:05" (2/3) ... [2023-11-19 05:07:07,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9a2aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:07:07, skipping insertion in model container [2023-11-19 05:07:07,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:07:07" (3/3) ... [2023-11-19 05:07:07,925 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product33.cil.c [2023-11-19 05:07:07,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:07:07,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:07:08,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:07:08,114 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;@26cb27ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:07:08,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:07:08,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 127 states have internal predecessors, (161), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-19 05:07:08,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 05:07:08,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:08,139 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:08,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:08,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2038167087, now seen corresponding path program 1 times [2023-11-19 05:07:08,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:08,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494366802] [2023-11-19 05:07:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:08,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 05:07:08,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:08,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494366802] [2023-11-19 05:07:08,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494366802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:08,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:08,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:07:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544438510] [2023-11-19 05:07:08,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:08,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:07:08,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:07:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:07:08,667 INFO L87 Difference]: Start difference. First operand has 212 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 127 states have internal predecessors, (161), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:07:08,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:08,924 INFO L93 Difference]: Finished difference Result 341 states and 452 transitions. [2023-11-19 05:07:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:07:08,927 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2023-11-19 05:07:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:08,942 INFO L225 Difference]: With dead ends: 341 [2023-11-19 05:07:08,942 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 05:07:08,952 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 [2023-11-19 05:07:08,957 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:08,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:07:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 05:07:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-19 05:07:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 121 states have (on average 1.28099173553719) internal successors, (155), 124 states have internal predecessors, (155), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 05:07:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2023-11-19 05:07:09,058 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 64 [2023-11-19 05:07:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:09,059 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2023-11-19 05:07:09,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:07:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2023-11-19 05:07:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 05:07:09,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:09,068 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:09,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:07:09,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:09,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1349477234, now seen corresponding path program 1 times [2023-11-19 05:07:09,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:09,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387306361] [2023-11-19 05:07:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:09,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 05:07:09,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:09,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387306361] [2023-11-19 05:07:09,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387306361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:09,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:09,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:09,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307650588] [2023-11-19 05:07:09,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:09,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:09,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:09,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:09,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:09,495 INFO L87 Difference]: Start difference. First operand 209 states and 280 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:07:09,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:09,699 INFO L93 Difference]: Finished difference Result 337 states and 440 transitions. [2023-11-19 05:07:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:09,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2023-11-19 05:07:09,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:09,705 INFO L225 Difference]: With dead ends: 337 [2023-11-19 05:07:09,705 INFO L226 Difference]: Without dead ends: 211 [2023-11-19 05:07:09,711 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 [2023-11-19 05:07:09,712 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:09,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:07:09,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-19 05:07:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2023-11-19 05:07:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 126 states have internal predecessors, (157), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-19 05:07:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2023-11-19 05:07:09,764 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 65 [2023-11-19 05:07:09,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:09,765 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2023-11-19 05:07:09,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:07:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2023-11-19 05:07:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 05:07:09,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:09,778 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:09,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:07:09,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:09,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:09,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1812903075, now seen corresponding path program 1 times [2023-11-19 05:07:09,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:09,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010027560] [2023-11-19 05:07:09,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:09,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 05:07:09,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010027560] [2023-11-19 05:07:09,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010027560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:07:09,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:07:09,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:07:09,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373216600] [2023-11-19 05:07:09,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:07:09,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:07:09,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:07:09,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:07:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:07:09,989 INFO L87 Difference]: Start difference. First operand 211 states and 282 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:07:10,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:07:10,167 INFO L93 Difference]: Finished difference Result 452 states and 623 transitions. [2023-11-19 05:07:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:07:10,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2023-11-19 05:07:10,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:07:10,176 INFO L225 Difference]: With dead ends: 452 [2023-11-19 05:07:10,177 INFO L226 Difference]: Without dead ends: 259 [2023-11-19 05:07:10,183 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 [2023-11-19 05:07:10,188 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 57 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:07:10,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 493 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:07:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-19 05:07:10,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 254. [2023-11-19 05:07:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 155 states have (on average 1.3548387096774193) internal successors, (210), 158 states have internal predecessors, (210), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-19 05:07:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 357 transitions. [2023-11-19 05:07:10,232 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 357 transitions. Word has length 70 [2023-11-19 05:07:10,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:07:10,232 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 357 transitions. [2023-11-19 05:07:10,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-19 05:07:10,233 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 357 transitions. [2023-11-19 05:07:10,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 05:07:10,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:07:10,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:07:10,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:07:10,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:07:10,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:07:10,236 INFO L85 PathProgramCache]: Analyzing trace with hash 489049290, now seen corresponding path program 1 times [2023-11-19 05:07:10,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:07:10,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983882020] [2023-11-19 05:07:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:10,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:07:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 05:07:10,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:07:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983882020] [2023-11-19 05:07:10,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983882020] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:07:10,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403252431] [2023-11-19 05:07:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:07:10,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:07:10,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:10,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:07:10,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62ea418-54c0-45cd-a903-142b04cd7976/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:07:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:07:10,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:07:10,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:07:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 05:07:11,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:07:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 05:07:11,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403252431] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:07:11,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1360796207] [2023-11-19 05:07:11,140 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2023-11-19 05:07:11,141 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:07:11,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:07:11,151 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:07:11,152 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs