./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/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_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8693f57a03775f9dd58f5523ab36f07a2ce550b119e4923229e8bee683b68937 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:28:23,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:28:23,955 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:28:23,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:28:23,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:28:23,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:28:23,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:28:23,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:28:23,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:28:23,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:28:23,987 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:28:23,987 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:28:23,988 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:28:23,988 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:28:23,988 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:28:23,989 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:28:23,989 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:28:23,990 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:28:23,990 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:28:23,991 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:28:23,991 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:28:23,992 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:28:23,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:28:23,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:28:23,993 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:28:23,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:28:23,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:28:23,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:28:23,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:28:23,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:28:23,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:28:23,996 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:28:23,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:28:23,996 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:28:23,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:28:23,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:28:23,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:28:23,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:28:23,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:28:23,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:28:23,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:28:23,998 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:28:23,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:28:23,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:28:23,998 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:28:23,998 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:28:23,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:28:23,999 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_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8693f57a03775f9dd58f5523ab36f07a2ce550b119e4923229e8bee683b68937 [2023-12-02 15:28:24,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:28:24,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:28:24,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:28:24,244 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:28:24,245 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:28:24,246 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec8_product35.cil.c [2023-12-02 15:28:27,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:28:27,340 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:28:27,341 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/sv-benchmarks/c/product-lines/email_spec8_product35.cil.c [2023-12-02 15:28:27,362 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/data/e101af2a1/c3404546a37b4fdfb7cd2a2f7c980701/FLAGed220506d [2023-12-02 15:28:27,374 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/data/e101af2a1/c3404546a37b4fdfb7cd2a2f7c980701 [2023-12-02 15:28:27,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:28:27,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:28:27,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:28:27,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:28:27,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:28:27,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:28:27" (1/1) ... [2023-12-02 15:28:27,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1940afb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:27, skipping insertion in model container [2023-12-02 15:28:27,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:28:27" (1/1) ... [2023-12-02 15:28:27,454 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:28:27,774 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_996983ce-7add-4cf6-9ce7-28763446c16c/sv-benchmarks/c/product-lines/email_spec8_product35.cil.c[16425,16438] [2023-12-02 15:28:27,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:28:27,946 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:28:27,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [48] [2023-12-02 15:28:27,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [528] [2023-12-02 15:28:27,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [571] [2023-12-02 15:28:27,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [895] [2023-12-02 15:28:27,955 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [904] [2023-12-02 15:28:27,955 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [939] [2023-12-02 15:28:27,955 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1338] [2023-12-02 15:28:27,955 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1704] [2023-12-02 15:28:27,956 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2764] [2023-12-02 15:28:27,956 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2986] [2023-12-02 15:28:27,956 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3121] [2023-12-02 15:28:27,985 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_996983ce-7add-4cf6-9ce7-28763446c16c/sv-benchmarks/c/product-lines/email_spec8_product35.cil.c[16425,16438] [2023-12-02 15:28:28,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:28:28,067 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:28:28,073 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:28:28,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28 WrapperNode [2023-12-02 15:28:28,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:28:28,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:28:28,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:28:28,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:28:28,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,188 INFO L138 Inliner]: procedures = 138, calls = 252, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1192 [2023-12-02 15:28:28,189 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:28:28,190 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:28:28,190 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:28:28,190 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:28:28,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:28:28,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:28:28,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:28:28,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:28:28,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (1/1) ... [2023-12-02 15:28:28,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:28:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:28:28,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:28:28,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:28:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 15:28:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 15:28:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-12-02 15:28:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-12-02 15:28:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 15:28:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 15:28:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-12-02 15:28:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-12-02 15:28:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 15:28:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 15:28:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 15:28:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 15:28:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-12-02 15:28:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-12-02 15:28:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 15:28:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 15:28:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 15:28:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 15:28:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 15:28:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 15:28:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 15:28:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 15:28:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 15:28:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 15:28:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 15:28:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 15:28:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 15:28:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 15:28:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 15:28:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-02 15:28:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-02 15:28:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 15:28:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 15:28:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:28:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 15:28:28,337 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 15:28:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 15:28:28,337 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 15:28:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-12-02 15:28:28,337 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-12-02 15:28:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 15:28:28,338 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 15:28:28,338 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 15:28:28,338 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 15:28:28,338 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 15:28:28,338 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 15:28:28,338 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 15:28:28,338 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 15:28:28,338 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 15:28:28,338 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 15:28:28,339 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 15:28:28,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 15:28:28,339 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 15:28:28,339 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 15:28:28,339 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 15:28:28,339 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 15:28:28,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:28:28,339 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 15:28:28,340 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 15:28:28,340 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-12-02 15:28:28,340 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-12-02 15:28:28,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:28:28,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:28:28,543 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:28:28,545 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:28:29,374 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:28:30,055 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:28:30,055 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:28:30,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:28:30 BoogieIcfgContainer [2023-12-02 15:28:30,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:28:30,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:28:30,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:28:30,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:28:30,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:28:27" (1/3) ... [2023-12-02 15:28:30,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7806de63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:28:30, skipping insertion in model container [2023-12-02 15:28:30,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:28:28" (2/3) ... [2023-12-02 15:28:30,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7806de63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:28:30, skipping insertion in model container [2023-12-02 15:28:30,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:28:30" (3/3) ... [2023-12-02 15:28:30,066 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product35.cil.c [2023-12-02 15:28:30,085 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:28:30,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:28:30,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:28:30,145 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;@7721aea2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:28:30,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:28:30,150 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) [2023-12-02 15:28:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 15:28:30,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:30,165 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] [2023-12-02 15:28:30,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:30,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:30,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1841589434, now seen corresponding path program 1 times [2023-12-02 15:28:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:30,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112090249] [2023-12-02 15:28:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:28:30,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:30,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112090249] [2023-12-02 15:28:30,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112090249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:28:30,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:28:30,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:28:30,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997046588] [2023-12-02 15:28:30,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:28:30,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:28:30,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:28:30,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:28:30,540 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) [2023-12-02 15:28:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:28:30,690 INFO L93 Difference]: Finished difference Result 392 states and 521 transitions. [2023-12-02 15:28:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:28:30,692 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 [2023-12-02 15:28:30,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:28:30,706 INFO L225 Difference]: With dead ends: 392 [2023-12-02 15:28:30,706 INFO L226 Difference]: Without dead ends: 239 [2023-12-02 15:28:30,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:28:30,716 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 [2023-12-02 15:28:30,717 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] [2023-12-02 15:28:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-02 15:28:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-12-02 15:28:30,768 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) [2023-12-02 15:28:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 318 transitions. [2023-12-02 15:28:30,775 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 318 transitions. Word has length 71 [2023-12-02 15:28:30,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:28:30,776 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 318 transitions. [2023-12-02 15:28:30,776 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) [2023-12-02 15:28:30,777 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 318 transitions. [2023-12-02 15:28:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 15:28:30,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:30,782 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] [2023-12-02 15:28:30,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:28:30,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:30,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash 734557749, now seen corresponding path program 1 times [2023-12-02 15:28:30,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:30,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722907003] [2023-12-02 15:28:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:30,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:28:30,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:30,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722907003] [2023-12-02 15:28:30,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722907003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:28:30,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:28:30,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:28:30,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263677799] [2023-12-02 15:28:30,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:28:30,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:28:30,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:30,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:28:30,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:28:30,992 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) [2023-12-02 15:28:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:28:31,134 INFO L93 Difference]: Finished difference Result 388 states and 506 transitions. [2023-12-02 15:28:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:28:31,134 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 [2023-12-02 15:28:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:28:31,138 INFO L225 Difference]: With dead ends: 388 [2023-12-02 15:28:31,138 INFO L226 Difference]: Without dead ends: 241 [2023-12-02 15:28:31,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:28:31,141 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 [2023-12-02 15:28:31,142 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] [2023-12-02 15:28:31,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-02 15:28:31,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2023-12-02 15:28:31,165 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) [2023-12-02 15:28:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2023-12-02 15:28:31,169 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 72 [2023-12-02 15:28:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:28:31,169 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2023-12-02 15:28:31,169 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) [2023-12-02 15:28:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2023-12-02 15:28:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 15:28:31,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:31,174 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] [2023-12-02 15:28:31,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:28:31,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:31,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1876194815, now seen corresponding path program 1 times [2023-12-02 15:28:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23710577] [2023-12-02 15:28:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:31,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:28:31,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:31,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23710577] [2023-12-02 15:28:31,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23710577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:28:31,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:28:31,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:28:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802597300] [2023-12-02 15:28:31,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:28:31,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:28:31,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:28:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:28:31,323 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) [2023-12-02 15:28:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:28:31,465 INFO L93 Difference]: Finished difference Result 517 states and 707 transitions. [2023-12-02 15:28:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:28:31,466 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 [2023-12-02 15:28:31,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:28:31,470 INFO L225 Difference]: With dead ends: 517 [2023-12-02 15:28:31,470 INFO L226 Difference]: Without dead ends: 294 [2023-12-02 15:28:31,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:28:31,473 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 [2023-12-02 15:28:31,473 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] [2023-12-02 15:28:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-02 15:28:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2023-12-02 15:28:31,496 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) [2023-12-02 15:28:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2023-12-02 15:28:31,500 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 77 [2023-12-02 15:28:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:28:31,501 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2023-12-02 15:28:31,501 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) [2023-12-02 15:28:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2023-12-02 15:28:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 15:28:31,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:31,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:28:31,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:28:31,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:31,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:31,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1452621993, now seen corresponding path program 1 times [2023-12-02 15:28:31,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:31,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068539979] [2023-12-02 15:28:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:28:31,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:31,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068539979] [2023-12-02 15:28:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068539979] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:28:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324506541] [2023-12-02 15:28:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:31,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:28:31,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:28:31,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:28:31,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:28:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:32,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:28:32,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:28:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:28:32,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:28:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:28:32,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324506541] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:28:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1720180478] [2023-12-02 15:28:32,212 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2023-12-02 15:28:32,212 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:28:32,216 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:28:32,222 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:28:32,222 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:29:18,641 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 228 for LOIs [2023-12-02 15:29:18,808 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 239 for LOIs [2023-12-02 15:29:19,062 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:30:18,382 WARN L293 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 526 DAG size of output: 526 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:30:33,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1720180478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:30:33,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:30:33,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 15:30:33,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674105465] [2023-12-02 15:30:33,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:30:33,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 15:30:33,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:30:33,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 15:30:33,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 15:30:33,961 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand has 24 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 15:30:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:30:50,342 INFO L93 Difference]: Finished difference Result 625 states and 906 transitions. [2023-12-02 15:30:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 15:30:50,343 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 78 [2023-12-02 15:30:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:30:50,346 INFO L225 Difference]: With dead ends: 625 [2023-12-02 15:30:50,346 INFO L226 Difference]: Without dead ends: 354 [2023-12-02 15:30:50,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 78.5s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2023-12-02 15:30:50,348 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 87 mSDsluCounter, 3638 mSDsCounter, 0 mSdLazyCounter, 2587 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:30:50,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 3923 Invalid, 2597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2587 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-12-02 15:30:50,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-02 15:30:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2023-12-02 15:30:50,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 192 states have (on average 1.3489583333333333) internal successors, (259), 196 states have internal predecessors, (259), 89 states have call successors, (89), 30 states have call predecessors, (89), 30 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-02 15:30:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 436 transitions. [2023-12-02 15:30:50,424 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 436 transitions. Word has length 78 [2023-12-02 15:30:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:30:50,425 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 436 transitions. [2023-12-02 15:30:50,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 15:30:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 436 transitions. [2023-12-02 15:30:50,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 15:30:50,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:30:50,428 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:30:50,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:30:50,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:30:50,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:30:50,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:30:50,630 INFO L85 PathProgramCache]: Analyzing trace with hash -275208160, now seen corresponding path program 1 times [2023-12-02 15:30:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:30:50,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375767185] [2023-12-02 15:30:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:30:50,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:30:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:30:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:30:50,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:30:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375767185] [2023-12-02 15:30:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375767185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:30:50,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:30:50,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:30:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070558760] [2023-12-02 15:30:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:30:50,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:30:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:30:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:30:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:30:50,726 INFO L87 Difference]: Start difference. First operand 312 states and 436 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 15:30:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:30:50,968 INFO L93 Difference]: Finished difference Result 727 states and 1052 transitions. [2023-12-02 15:30:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:30:50,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2023-12-02 15:30:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:30:50,973 INFO L225 Difference]: With dead ends: 727 [2023-12-02 15:30:50,973 INFO L226 Difference]: Without dead ends: 439 [2023-12-02 15:30:50,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:30:50,976 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 57 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 549 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 [2023-12-02 15:30:50,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 549 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:30:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-12-02 15:30:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 434. [2023-12-02 15:30:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 283 states have (on average 1.4098939929328622) internal successors, (399), 287 states have internal predecessors, (399), 120 states have call successors, (120), 30 states have call predecessors, (120), 30 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2023-12-02 15:30:51,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 638 transitions. [2023-12-02 15:30:51,121 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 638 transitions. Word has length 83 [2023-12-02 15:30:51,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:30:51,122 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 638 transitions. [2023-12-02 15:30:51,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 15:30:51,122 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 638 transitions. [2023-12-02 15:30:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 15:30:51,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:30:51,125 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:30:51,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 15:30:51,125 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:30:51,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:30:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1871614133, now seen corresponding path program 1 times [2023-12-02 15:30:51,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:30:51,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78737531] [2023-12-02 15:30:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:30:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:30:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:30:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:30:51,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:30:51,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78737531] [2023-12-02 15:30:51,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78737531] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:30:51,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595678386] [2023-12-02 15:30:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:30:51,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:30:51,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:30:51,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:30:51,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:30:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:30:51,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:30:51,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:30:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:30:51,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:30:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:30:51,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595678386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:30:51,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [578158073] [2023-12-02 15:30:51,650 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2023-12-02 15:30:51,650 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:30:51,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:30:51,651 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:30:51,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:31:53,544 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 228 for LOIs [2023-12-02 15:31:53,717 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 506 for LOIs [2023-12-02 15:31:55,965 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:32:18,168 WARN L293 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 506 DAG size of output: 507 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:32:28,124 WARN L293 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 536 DAG size of output: 531 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:33:11,113 WARN L293 SmtUtils]: Spent 10.17s on a formula simplification. DAG size of input: 529 DAG size of output: 529 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:33:42,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [578158073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:42,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:33:42,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 15:33:42,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589817209] [2023-12-02 15:33:42,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:42,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 15:33:42,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:42,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 15:33:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 15:33:42,587 INFO L87 Difference]: Start difference. First operand 434 states and 638 transitions. Second operand has 28 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 15:33:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:58,442 INFO L93 Difference]: Finished difference Result 886 states and 1333 transitions. [2023-12-02 15:33:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 15:33:58,443 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 84 [2023-12-02 15:33:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:58,446 INFO L225 Difference]: With dead ends: 886 [2023-12-02 15:33:58,446 INFO L226 Difference]: Without dead ends: 515 [2023-12-02 15:33:58,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 106.6s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 15:33:58,449 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 151 mSDsluCounter, 4287 mSDsCounter, 0 mSdLazyCounter, 3004 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:58,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 4542 Invalid, 3012 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 3004 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2023-12-02 15:33:58,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-12-02 15:33:58,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 448. [2023-12-02 15:33:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 295 states have (on average 1.4101694915254237) internal successors, (416), 299 states have internal predecessors, (416), 121 states have call successors, (121), 31 states have call predecessors, (121), 31 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-02 15:33:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 657 transitions. [2023-12-02 15:33:58,568 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 657 transitions. Word has length 84 [2023-12-02 15:33:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:58,568 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 657 transitions. [2023-12-02 15:33:58,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 15:33:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 657 transitions. [2023-12-02 15:33:58,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 15:33:58,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:58,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:58,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:33:58,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 15:33:58,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:58,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:58,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1956502024, now seen corresponding path program 1 times [2023-12-02 15:33:58,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:58,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877162444] [2023-12-02 15:33:58,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:58,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:33:58,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:58,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877162444] [2023-12-02 15:33:58,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877162444] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:58,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378913094] [2023-12-02 15:33:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:58,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:58,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:58,888 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:58,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:33:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:59,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:33:59,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:33:59,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:33:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:33:59,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378913094] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:33:59,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [37911585] [2023-12-02 15:33:59,306 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2023-12-02 15:33:59,307 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:33:59,307 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:33:59,308 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:33:59,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:36:08,789 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 228 for LOIs [2023-12-02 15:36:08,955 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 573 for LOIs [2023-12-02 15:36:10,976 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 582 for LOIs [2023-12-02 15:36:12,950 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 497 for LOIs [2023-12-02 15:36:13,654 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 239 for LOIs [2023-12-02 15:36:13,870 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:37:15,743 WARN L293 SmtUtils]: Spent 12.28s on a formula simplification. DAG size of input: 610 DAG size of output: 605 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:37:21,635 WARN L293 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 603 DAG size of output: 595 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:38:15,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [37911585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:38:15,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:38:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 15:38:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717630097] [2023-12-02 15:38:15,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:38:15,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 15:38:15,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:38:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 15:38:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 15:38:15,558 INFO L87 Difference]: Start difference. First operand 448 states and 657 transitions. Second operand has 33 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-02 15:38:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:38:47,445 INFO L93 Difference]: Finished difference Result 911 states and 1368 transitions. [2023-12-02 15:38:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 15:38:47,446 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 87 [2023-12-02 15:38:47,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:38:47,449 INFO L225 Difference]: With dead ends: 911 [2023-12-02 15:38:47,449 INFO L226 Difference]: Without dead ends: 540 [2023-12-02 15:38:47,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 125.1s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 15:38:47,451 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 90 mSDsluCounter, 3983 mSDsCounter, 0 mSdLazyCounter, 4304 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 4239 SdHoareTripleChecker+Invalid, 4314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:38:47,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 4239 Invalid, 4314 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 4304 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time] [2023-12-02 15:38:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-12-02 15:38:47,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 484. [2023-12-02 15:38:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 325 states have (on average 1.4092307692307693) internal successors, (458), 329 states have internal predecessors, (458), 124 states have call successors, (124), 34 states have call predecessors, (124), 34 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2023-12-02 15:38:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 705 transitions. [2023-12-02 15:38:47,617 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 705 transitions. Word has length 87 [2023-12-02 15:38:47,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:38:47,618 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 705 transitions. [2023-12-02 15:38:47,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-02 15:38:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 705 transitions. [2023-12-02 15:38:47,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 15:38:47,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:38:47,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:38:47,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:38:47,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 15:38:47,822 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:38:47,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:38:47,822 INFO L85 PathProgramCache]: Analyzing trace with hash -958288304, now seen corresponding path program 1 times [2023-12-02 15:38:47,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:38:47,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555351386] [2023-12-02 15:38:47,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:47,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:38:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:38:47,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:38:47,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555351386] [2023-12-02 15:38:47,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555351386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:38:47,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133708107] [2023-12-02 15:38:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:47,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:38:47,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:38:47,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:38:47,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:38:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:48,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:38:48,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:38:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:38:48,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:38:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:38:48,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133708107] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:38:48,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [48615944] [2023-12-02 15:38:48,343 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2023-12-02 15:38:48,343 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:38:48,344 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:38:48,344 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:38:48,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:39:52,407 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 228 for LOIs [2023-12-02 15:39:52,571 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 239 for LOIs [2023-12-02 15:39:52,789 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:40:53,489 WARN L293 SmtUtils]: Spent 10.03s on a formula simplification. DAG size of input: 534 DAG size of output: 534 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:41:43,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [48615944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:43,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:41:43,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 15:41:43,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013529893] [2023-12-02 15:41:43,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:43,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 15:41:43,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:43,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 15:41:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 15:41:43,907 INFO L87 Difference]: Start difference. First operand 484 states and 705 transitions. Second operand has 32 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 15:42:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:01,649 INFO L93 Difference]: Finished difference Result 925 states and 1383 transitions. [2023-12-02 15:42:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 15:42:01,650 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 86 [2023-12-02 15:42:01,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:01,654 INFO L225 Difference]: With dead ends: 925 [2023-12-02 15:42:01,654 INFO L226 Difference]: Without dead ends: 554 [2023-12-02 15:42:01,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 114.7s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 15:42:01,656 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 89 mSDsluCounter, 4052 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:01,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 4305 Invalid, 2933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-12-02 15:42:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-02 15:42:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 504. [2023-12-02 15:42:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 345 states have (on average 1.4144927536231884) internal successors, (488), 349 states have internal predecessors, (488), 124 states have call successors, (124), 34 states have call predecessors, (124), 34 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2023-12-02 15:42:01,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 735 transitions. [2023-12-02 15:42:01,839 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 735 transitions. Word has length 86 [2023-12-02 15:42:01,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:01,839 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 735 transitions. [2023-12-02 15:42:01,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 15:42:01,839 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 735 transitions. [2023-12-02 15:42:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 15:42:01,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:01,841 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:01,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:42:02,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 15:42:02,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:02,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash -163017428, now seen corresponding path program 1 times [2023-12-02 15:42:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141976024] [2023-12-02 15:42:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:02,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 15:42:02,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141976024] [2023-12-02 15:42:02,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141976024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:02,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:02,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:42:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385235554] [2023-12-02 15:42:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:02,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:02,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:02,244 INFO L87 Difference]: Start difference. First operand 504 states and 735 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 15:42:02,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:02,544 INFO L93 Difference]: Finished difference Result 694 states and 970 transitions. [2023-12-02 15:42:02,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:02,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 89 [2023-12-02 15:42:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:02,549 INFO L225 Difference]: With dead ends: 694 [2023-12-02 15:42:02,549 INFO L226 Difference]: Without dead ends: 554 [2023-12-02 15:42:02,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:02,551 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 146 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:02,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 412 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:42:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-02 15:42:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 553. [2023-12-02 15:42:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 370 states have (on average 1.3918918918918919) internal successors, (515), 376 states have internal predecessors, (515), 138 states have call successors, (138), 46 states have call predecessors, (138), 44 states have return successors, (136), 133 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-02 15:42:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 789 transitions. [2023-12-02 15:42:02,753 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 789 transitions. Word has length 89 [2023-12-02 15:42:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:02,753 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 789 transitions. [2023-12-02 15:42:02,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 15:42:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 789 transitions. [2023-12-02 15:42:02,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-02 15:42:02,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:02,756 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:02,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 15:42:02,756 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:02,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2129467052, now seen corresponding path program 1 times [2023-12-02 15:42:02,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:02,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810855860] [2023-12-02 15:42:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:02,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 15:42:03,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:03,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810855860] [2023-12-02 15:42:03,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810855860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:03,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 15:42:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469493393] [2023-12-02 15:42:03,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:03,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:42:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:42:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:42:03,357 INFO L87 Difference]: Start difference. First operand 553 states and 789 transitions. Second operand has 12 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2023-12-02 15:42:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:04,578 INFO L93 Difference]: Finished difference Result 1127 states and 1577 transitions. [2023-12-02 15:42:04,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 15:42:04,578 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 154 [2023-12-02 15:42:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:04,584 INFO L225 Difference]: With dead ends: 1127 [2023-12-02 15:42:04,584 INFO L226 Difference]: Without dead ends: 947 [2023-12-02 15:42:04,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-12-02 15:42:04,586 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 297 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:04,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 2058 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:42:04,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-12-02 15:42:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 939. [2023-12-02 15:42:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 609 states have (on average 1.3973727422003284) internal successors, (851), 620 states have internal predecessors, (851), 250 states have call successors, (250), 83 states have call predecessors, (250), 79 states have return successors, (245), 241 states have call predecessors, (245), 245 states have call successors, (245) [2023-12-02 15:42:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1346 transitions. [2023-12-02 15:42:04,867 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1346 transitions. Word has length 154 [2023-12-02 15:42:04,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:04,867 INFO L495 AbstractCegarLoop]: Abstraction has 939 states and 1346 transitions. [2023-12-02 15:42:04,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2023-12-02 15:42:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1346 transitions. [2023-12-02 15:42:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-02 15:42:04,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:04,871 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:04,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 15:42:04,871 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:04,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:04,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1256338105, now seen corresponding path program 1 times [2023-12-02 15:42:04,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:04,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281299679] [2023-12-02 15:42:04,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:04,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-02 15:42:05,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:05,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281299679] [2023-12-02 15:42:05,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281299679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:05,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:05,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:42:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251447763] [2023-12-02 15:42:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:05,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:42:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:42:05,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:42:05,171 INFO L87 Difference]: Start difference. First operand 939 states and 1346 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-02 15:42:06,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:06,090 INFO L93 Difference]: Finished difference Result 1504 states and 2059 transitions. [2023-12-02 15:42:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:42:06,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 153 [2023-12-02 15:42:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:06,099 INFO L225 Difference]: With dead ends: 1504 [2023-12-02 15:42:06,099 INFO L226 Difference]: Without dead ends: 1204 [2023-12-02 15:42:06,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:42:06,102 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 288 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:06,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 565 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:42:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2023-12-02 15:42:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1156. [2023-12-02 15:42:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 727 states have (on average 1.360385144429161) internal successors, (989), 748 states have internal predecessors, (989), 314 states have call successors, (314), 116 states have call predecessors, (314), 114 states have return successors, (312), 300 states have call predecessors, (312), 308 states have call successors, (312) [2023-12-02 15:42:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1615 transitions. [2023-12-02 15:42:06,447 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1615 transitions. Word has length 153 [2023-12-02 15:42:06,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:06,447 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1615 transitions. [2023-12-02 15:42:06,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-02 15:42:06,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1615 transitions. [2023-12-02 15:42:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 15:42:06,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:06,453 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:06,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 15:42:06,453 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:06,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1093224722, now seen corresponding path program 1 times [2023-12-02 15:42:06,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:06,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895934835] [2023-12-02 15:42:06,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:06,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 15:42:06,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:06,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895934835] [2023-12-02 15:42:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895934835] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:42:06,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265810211] [2023-12-02 15:42:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:06,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:06,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:06,597 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:06,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_996983ce-7add-4cf6-9ce7-28763446c16c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:42:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:07,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:42:07,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 15:42:07,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 15:42:07,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265810211] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:42:07,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [817372614] [2023-12-02 15:42:07,161 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2023-12-02 15:42:07,161 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:42:07,161 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:42:07,162 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:42:07,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs