./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product35.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_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/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_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/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_42f79b11-94ec-4127-be20-de30f68a1bfd/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 8693f57a03775f9dd58f5523ab36f07a2ce550b119e4923229e8bee683b68937 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:00:20,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:00:20,934 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:00:20,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:00:20,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:00:20,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:00:20,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:00:20,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:00:20,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:00:20,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:00:20,999 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:00:20,999 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:00:21,000 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:00:21,003 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:00:21,003 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:00:21,004 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:00:21,004 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:00:21,005 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:00:21,005 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:00:21,006 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:00:21,006 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:00:21,007 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:00:21,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:00:21,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:00:21,009 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:00:21,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:00:21,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:00:21,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:00:21,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:00:21,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:00:21,013 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:00:21,013 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:00:21,014 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:00:21,014 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:00:21,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:00:21,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:00:21,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:21,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:00:21,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:00:21,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:00:21,018 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:00:21,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:00:21,018 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:00:21,019 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:00:21,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:00:21,020 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_42f79b11-94ec-4127-be20-de30f68a1bfd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8693f57a03775f9dd58f5523ab36f07a2ce550b119e4923229e8bee683b68937 [2023-11-19 05:00:21,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:00:21,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:00:21,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:00:21,343 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:00:21,343 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:00:21,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/email_spec8_product35.cil.c [2023-11-19 05:00:24,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:00:25,036 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:00:25,037 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/sv-benchmarks/c/product-lines/email_spec8_product35.cil.c [2023-11-19 05:00:25,064 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/data/43d6aef84/9e6a39973f794c7e9fbbe3973fef2e2d/FLAGd2de59c92 [2023-11-19 05:00:25,081 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/data/43d6aef84/9e6a39973f794c7e9fbbe3973fef2e2d [2023-11-19 05:00:25,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:00:25,086 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:00:25,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:25,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:00:25,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:00:25,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:25" (1/1) ... [2023-11-19 05:00:25,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28800a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:25, skipping insertion in model container [2023-11-19 05:00:25,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:25" (1/1) ... [2023-11-19 05:00:25,196 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:00:25,771 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_42f79b11-94ec-4127-be20-de30f68a1bfd/sv-benchmarks/c/product-lines/email_spec8_product35.cil.c[16425,16438] [2023-11-19 05:00:25,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:26,006 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:00:26,019 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [48] [2023-11-19 05:00:26,021 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [528] [2023-11-19 05:00:26,021 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [571] [2023-11-19 05:00:26,021 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [895] [2023-11-19 05:00:26,022 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [904] [2023-11-19 05:00:26,022 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [939] [2023-11-19 05:00:26,022 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1338] [2023-11-19 05:00:26,023 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1704] [2023-11-19 05:00:26,023 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2764] [2023-11-19 05:00:26,023 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2986] [2023-11-19 05:00:26,024 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3121] [2023-11-19 05:00:26,057 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_42f79b11-94ec-4127-be20-de30f68a1bfd/sv-benchmarks/c/product-lines/email_spec8_product35.cil.c[16425,16438] [2023-11-19 05:00:26,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:26,184 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:00:26,193 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:00:26,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26 WrapperNode [2023-11-19 05:00:26,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:26,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:26,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:00:26,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:00:26,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,318 INFO L138 Inliner]: procedures = 138, calls = 252, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1172 [2023-11-19 05:00:26,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:26,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:00:26,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:00:26,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:00:26,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:00:26,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:00:26,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:00:26,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:00:26,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (1/1) ... [2023-11-19 05:00:26,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:26,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:26,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:00:26,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:00:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-19 05:00:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-19 05:00:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-19 05:00:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-19 05:00:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-19 05:00:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-19 05:00:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-19 05:00:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-19 05:00:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-19 05:00:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-19 05:00:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-19 05:00:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-19 05:00:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-11-19 05:00:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-11-19 05:00:26,574 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-19 05:00:26,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-19 05:00:26,574 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-19 05:00:26,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-19 05:00:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-19 05:00:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-19 05:00:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-19 05:00:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-19 05:00:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-19 05:00:26,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-19 05:00:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-19 05:00:26,576 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-19 05:00:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-19 05:00:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-19 05:00:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-19 05:00:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-19 05:00:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-19 05:00:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-19 05:00:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-19 05:00:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:00:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-19 05:00:26,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-19 05:00:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-19 05:00:26,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-19 05:00:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-19 05:00:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-19 05:00:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-19 05:00:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-19 05:00:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-19 05:00:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-19 05:00:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-19 05:00:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-19 05:00:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-19 05:00:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-19 05:00:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-19 05:00:26,583 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-19 05:00:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-19 05:00:26,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-19 05:00:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-19 05:00:26,584 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-19 05:00:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-19 05:00:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-19 05:00:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:00:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-19 05:00:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-19 05:00:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-19 05:00:26,586 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-19 05:00:26,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:00:26,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:00:26,889 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:00:26,893 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:00:28,269 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:00:29,208 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:00:29,208 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:00:29,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:29 BoogieIcfgContainer [2023-11-19 05:00:29,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:00:29,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:00:29,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:00:29,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:00:29,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:00:25" (1/3) ... [2023-11-19 05:00:29,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500f5a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:29, skipping insertion in model container [2023-11-19 05:00:29,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:26" (2/3) ... [2023-11-19 05:00:29,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500f5a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:29, skipping insertion in model container [2023-11-19 05:00:29,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:29" (3/3) ... [2023-11-19 05:00:29,229 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product35.cil.c [2023-11-19 05:00:29,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:00:29,254 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:00:29,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:00:29,330 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;@12cf946c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:00:29,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:00:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-19 05:00:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 05:00:29,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:29,356 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, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:29,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:29,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash 55201474, now seen corresponding path program 1 times [2023-11-19 05:00:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:29,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251972407] [2023-11-19 05:00:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:29,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:29,794 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 05:00:29,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:29,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251972407] [2023-11-19 05:00:29,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251972407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:29,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:29,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:00:29,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270524302] [2023-11-19 05:00:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:29,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:00:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:29,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:00:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:00:29,842 INFO L87 Difference]: Start difference. First operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 05:00:30,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:30,097 INFO L93 Difference]: Finished difference Result 392 states and 521 transitions. [2023-11-19 05:00:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:00:30,103 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2023-11-19 05:00:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:30,126 INFO L225 Difference]: With dead ends: 392 [2023-11-19 05:00:30,126 INFO L226 Difference]: Without dead ends: 239 [2023-11-19 05:00:30,138 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 05:00:30,146 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:30,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 274 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:00:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-19 05:00:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-11-19 05:00:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 138 states have internal predecessors, (169), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2023-11-19 05:00:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 318 transitions. [2023-11-19 05:00:30,254 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 318 transitions. Word has length 71 [2023-11-19 05:00:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:30,257 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 318 transitions. [2023-11-19 05:00:30,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 05:00:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 318 transitions. [2023-11-19 05:00:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 05:00:30,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:30,268 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:30,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:00:30,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:30,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash -571066753, now seen corresponding path program 1 times [2023-11-19 05:00:30,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392287090] [2023-11-19 05:00:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:30,629 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 05:00:30,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:30,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392287090] [2023-11-19 05:00:30,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392287090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:30,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:30,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:30,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073148951] [2023-11-19 05:00:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:30,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:30,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:30,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:30,635 INFO L87 Difference]: Start difference. First operand 239 states and 318 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 05:00:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:30,831 INFO L93 Difference]: Finished difference Result 388 states and 506 transitions. [2023-11-19 05:00:30,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:30,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2023-11-19 05:00:30,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:30,836 INFO L225 Difference]: With dead ends: 388 [2023-11-19 05:00:30,836 INFO L226 Difference]: Without dead ends: 241 [2023-11-19 05:00:30,837 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 05:00:30,839 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:30,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 541 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:00:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-19 05:00:30,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2023-11-19 05:00:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 140 states have internal predecessors, (171), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2023-11-19 05:00:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2023-11-19 05:00:30,872 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 72 [2023-11-19 05:00:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:30,873 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2023-11-19 05:00:30,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 05:00:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2023-11-19 05:00:30,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 05:00:30,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:30,876 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:30,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:00:30,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:30,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:30,877 INFO L85 PathProgramCache]: Analyzing trace with hash -226565225, now seen corresponding path program 1 times [2023-11-19 05:00:30,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:30,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919599934] [2023-11-19 05:00:30,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:30,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:31,085 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 05:00:31,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:31,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919599934] [2023-11-19 05:00:31,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919599934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:31,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:31,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:31,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524348489] [2023-11-19 05:00:31,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:31,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:31,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:31,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:31,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:31,089 INFO L87 Difference]: Start difference. First operand 241 states and 320 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 05:00:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:31,251 INFO L93 Difference]: Finished difference Result 517 states and 707 transitions. [2023-11-19 05:00:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:31,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2023-11-19 05:00:31,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:31,256 INFO L225 Difference]: With dead ends: 517 [2023-11-19 05:00:31,256 INFO L226 Difference]: Without dead ends: 294 [2023-11-19 05:00:31,257 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 05:00:31,259 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 59 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:31,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 543 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:00:31,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-19 05:00:31,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2023-11-19 05:00:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 174 states have internal predecessors, (226), 89 states have call successors, (89), 29 states have call predecessors, (89), 29 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-19 05:00:31,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2023-11-19 05:00:31,314 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 77 [2023-11-19 05:00:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:31,316 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2023-11-19 05:00:31,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-19 05:00:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2023-11-19 05:00:31,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 05:00:31,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:31,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:31,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:00:31,326 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:31,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:31,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1074931225, now seen corresponding path program 1 times [2023-11-19 05:00:31,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:31,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976453101] [2023-11-19 05:00:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:31,663 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 05:00:31,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976453101] [2023-11-19 05:00:31,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976453101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:00:31,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310710875] [2023-11-19 05:00:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:31,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:31,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:31,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:31,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42f79b11-94ec-4127-be20-de30f68a1bfd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:00:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:32,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:00:32,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:32,203 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 05:00:32,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:00:32,325 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 05:00:32,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310710875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:00:32,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1385680017] [2023-11-19 05:00:32,356 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2023-11-19 05:00:32,356 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:00:32,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:00:32,367 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:00:32,368 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs