./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/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_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/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_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/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 14180d3cb690799ed57b4096de70e545e9154e30692708de4df58b96eb76a2f0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:51:38,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:51:38,941 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:51:38,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:51:38,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:51:38,976 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:51:38,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:51:38,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:51:38,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:51:38,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:51:38,980 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:51:38,980 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:51:38,981 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:51:38,982 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:51:38,982 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:51:38,983 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:51:38,983 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:51:38,984 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:51:38,984 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:51:38,985 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:51:38,986 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:51:38,987 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:51:38,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:51:38,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:51:38,989 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:51:38,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:51:38,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:51:38,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:51:38,990 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:51:38,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:51:38,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:51:38,992 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:51:38,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:51:38,993 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:51:38,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:51:38,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:51:38,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:51:38,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:51:38,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:51:38,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:51:38,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:51:38,995 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:51:38,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:51:38,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:51:38,995 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:51:38,996 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:51:38,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:51:38,996 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_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14180d3cb690799ed57b4096de70e545e9154e30692708de4df58b96eb76a2f0 [2023-12-02 13:51:39,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:51:39,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:51:39,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:51:39,264 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:51:39,265 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:51:39,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec8_product20.cil.c [2023-12-02 13:51:42,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:51:42,823 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:51:42,823 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/sv-benchmarks/c/product-lines/email_spec8_product20.cil.c [2023-12-02 13:51:42,847 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/data/3cea397b4/5e0a1f6ccee345a884e6588cd307f4f2/FLAGdb9af17fe [2023-12-02 13:51:42,864 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/data/3cea397b4/5e0a1f6ccee345a884e6588cd307f4f2 [2023-12-02 13:51:42,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:51:42,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:51:42,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:51:42,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:51:42,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:51:42,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:51:42" (1/1) ... [2023-12-02 13:51:42,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce896fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:42, skipping insertion in model container [2023-12-02 13:51:42,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:51:42" (1/1) ... [2023-12-02 13:51:42,959 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:51:43,264 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_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/sv-benchmarks/c/product-lines/email_spec8_product20.cil.c[19452,19465] [2023-12-02 13:51:43,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:51:43,485 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:51:43,493 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-12-02 13:51:43,495 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [414] [2023-12-02 13:51:43,495 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [432] [2023-12-02 13:51:43,495 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [844] [2023-12-02 13:51:43,495 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [853] [2023-12-02 13:51:43,495 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [1933] [2023-12-02 13:51:43,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1987] [2023-12-02 13:51:43,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2216] [2023-12-02 13:51:43,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2321] [2023-12-02 13:51:43,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2618] [2023-12-02 13:51:43,497 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2925] [2023-12-02 13:51:43,537 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_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/sv-benchmarks/c/product-lines/email_spec8_product20.cil.c[19452,19465] [2023-12-02 13:51:43,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:51:43,677 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:51:43,685 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:51:43,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43 WrapperNode [2023-12-02 13:51:43,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:51:43,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:51:43,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:51:43,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:51:43,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,771 INFO L138 Inliner]: procedures = 129, calls = 220, calls flagged for inlining = 56, calls inlined = 49, statements flattened = 995 [2023-12-02 13:51:43,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:51:43,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:51:43,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:51:43,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:51:43,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:51:43,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:51:43,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:51:43,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:51:43,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (1/1) ... [2023-12-02 13:51:43,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:51:43,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:51:43,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:51:43,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:51:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-12-02 13:51:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-12-02 13:51:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 13:51:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 13:51:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-12-02 13:51:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-12-02 13:51:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 13:51:43,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 13:51:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 13:51:43,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 13:51:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-12-02 13:51:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-12-02 13:51:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 13:51:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 13:51:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 13:51:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 13:51:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 13:51:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 13:51:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 13:51:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 13:51:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 13:51:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 13:51:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 13:51:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 13:51:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 13:51:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:51:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-12-02 13:51:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-12-02 13:51:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 13:51:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 13:51:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 13:51:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 13:51:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 13:51:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 13:51:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 13:51:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 13:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 13:51:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 13:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 13:51:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 13:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 13:51:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 13:51:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:51:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 13:51:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 13:51:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-12-02 13:51:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-12-02 13:51:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:51:43,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:51:44,142 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:51:44,145 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:51:44,968 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:51:45,590 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:51:45,590 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:51:45,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:51:45 BoogieIcfgContainer [2023-12-02 13:51:45,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:51:45,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:51:45,596 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:51:45,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:51:45,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:51:42" (1/3) ... [2023-12-02 13:51:45,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44eeade1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:51:45, skipping insertion in model container [2023-12-02 13:51:45,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:51:43" (2/3) ... [2023-12-02 13:51:45,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44eeade1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:51:45, skipping insertion in model container [2023-12-02 13:51:45,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:51:45" (3/3) ... [2023-12-02 13:51:45,603 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product20.cil.c [2023-12-02 13:51:45,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:51:45,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:51:45,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:51:45,699 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;@76ba726, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:51:45,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:51:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 108 states have internal predecessors, (138), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-02 13:51:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 13:51:45,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:51:45,724 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] [2023-12-02 13:51:45,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:51:45,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:51:45,731 INFO L85 PathProgramCache]: Analyzing trace with hash -389564570, now seen corresponding path program 1 times [2023-12-02 13:51:45,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:51:45,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957327584] [2023-12-02 13:51:45,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:51:45,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:51:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:51:46,161 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 13:51:46,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:51:46,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957327584] [2023-12-02 13:51:46,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957327584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:51:46,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:51:46,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:51:46,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093521908] [2023-12-02 13:51:46,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:51:46,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:51:46,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:51:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:51:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:51:46,209 INFO L87 Difference]: Start difference. First operand has 181 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 108 states have internal predecessors, (138), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 13:51:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:51:46,356 INFO L93 Difference]: Finished difference Result 270 states and 363 transitions. [2023-12-02 13:51:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:51:46,359 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 63 [2023-12-02 13:51:46,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:51:46,373 INFO L225 Difference]: With dead ends: 270 [2023-12-02 13:51:46,373 INFO L226 Difference]: Without dead ends: 178 [2023-12-02 13:51:46,379 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 13:51:46,383 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:51:46,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:51:46,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-02 13:51:46,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-12-02 13:51:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 101 states have (on average 1.306930693069307) internal successors, (132), 105 states have internal predecessors, (132), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-02 13:51:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 239 transitions. [2023-12-02 13:51:46,451 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 239 transitions. Word has length 63 [2023-12-02 13:51:46,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:51:46,452 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 239 transitions. [2023-12-02 13:51:46,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 13:51:46,453 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 239 transitions. [2023-12-02 13:51:46,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 13:51:46,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:51:46,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:51:46,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:51:46,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:51:46,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:51:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash 965947251, now seen corresponding path program 1 times [2023-12-02 13:51:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:51:46,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749855408] [2023-12-02 13:51:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:51:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:51:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:51:46,675 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 13:51:46,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:51:46,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749855408] [2023-12-02 13:51:46,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749855408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:51:46,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:51:46,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:51:46,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99923906] [2023-12-02 13:51:46,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:51:46,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:51:46,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:51:46,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:51:46,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:51:46,681 INFO L87 Difference]: Start difference. First operand 178 states and 239 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 13:51:46,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:51:46,809 INFO L93 Difference]: Finished difference Result 266 states and 348 transitions. [2023-12-02 13:51:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:51:46,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2023-12-02 13:51:46,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:51:46,813 INFO L225 Difference]: With dead ends: 266 [2023-12-02 13:51:46,813 INFO L226 Difference]: Without dead ends: 180 [2023-12-02 13:51:46,815 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 13:51:46,817 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:51:46,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:51:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-02 13:51:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-12-02 13:51:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 103 states have (on average 1.3009708737864079) internal successors, (134), 107 states have internal predecessors, (134), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-02 13:51:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 241 transitions. [2023-12-02 13:51:46,840 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 241 transitions. Word has length 64 [2023-12-02 13:51:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:51:46,841 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 241 transitions. [2023-12-02 13:51:46,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 13:51:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 241 transitions. [2023-12-02 13:51:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 13:51:46,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:51:46,845 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] [2023-12-02 13:51:46,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:51:46,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:51:46,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:51:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash 840450378, now seen corresponding path program 1 times [2023-12-02 13:51:46,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:51:46,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954118702] [2023-12-02 13:51:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:51:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:51:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:51:46,989 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 13:51:46,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:51:46,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954118702] [2023-12-02 13:51:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954118702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:51:46,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:51:46,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:51:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239620078] [2023-12-02 13:51:46,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:51:46,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:51:46,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:51:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:51:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:51:46,992 INFO L87 Difference]: Start difference. First operand 180 states and 241 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 13:51:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:51:47,133 INFO L93 Difference]: Finished difference Result 395 states and 549 transitions. [2023-12-02 13:51:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:51:47,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 69 [2023-12-02 13:51:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:51:47,137 INFO L225 Difference]: With dead ends: 395 [2023-12-02 13:51:47,137 INFO L226 Difference]: Without dead ends: 233 [2023-12-02 13:51:47,138 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 13:51:47,140 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 59 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:51:47,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 418 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:51:47,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-02 13:51:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 228. [2023-12-02 13:51:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 137 states have (on average 1.3795620437956204) internal successors, (189), 141 states have internal predecessors, (189), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-02 13:51:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 324 transitions. [2023-12-02 13:51:47,195 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 324 transitions. Word has length 69 [2023-12-02 13:51:47,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:51:47,195 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 324 transitions. [2023-12-02 13:51:47,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 13:51:47,196 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 324 transitions. [2023-12-02 13:51:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 13:51:47,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:51:47,199 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:51:47,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:51:47,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:51:47,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:51:47,200 INFO L85 PathProgramCache]: Analyzing trace with hash 983823940, now seen corresponding path program 1 times [2023-12-02 13:51:47,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:51:47,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978375879] [2023-12-02 13:51:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:51:47,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:51:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:51:47,400 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 13:51:47,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:51:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978375879] [2023-12-02 13:51:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978375879] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:51:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765715409] [2023-12-02 13:51:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:51:47,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:51:47,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:51:47,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:51:47,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:51:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:51:47,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:51:47,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:51:47,857 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 13:51:47,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:51:47,941 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 13:51:47,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765715409] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:51:47,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [821826034] [2023-12-02 13:51:47,967 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-12-02 13:51:47,968 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:51:47,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:51:47,979 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:51:47,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:52:39,324 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 13:52:39,575 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 239 for LOIs [2023-12-02 13:52:39,836 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:53:42,399 WARN L293 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 507 DAG size of output: 507 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:53:57,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [821826034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:57,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:53:57,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 13:53:57,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565425046] [2023-12-02 13:53:57,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:57,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 13:53:57,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:57,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 13:53:57,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2023-12-02 13:53:57,514 INFO L87 Difference]: Start difference. First operand 228 states and 324 transitions. Second operand has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 13:54:19,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:19,298 INFO L93 Difference]: Finished difference Result 503 states and 748 transitions. [2023-12-02 13:54:19,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 13:54:19,299 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 70 [2023-12-02 13:54:19,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:19,302 INFO L225 Difference]: With dead ends: 503 [2023-12-02 13:54:19,302 INFO L226 Difference]: Without dead ends: 293 [2023-12-02 13:54:19,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 86.2s TimeCoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2023-12-02 13:54:19,304 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 87 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:19,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 2525 Invalid, 2324 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2023-12-02 13:54:19,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-02 13:54:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 251. [2023-12-02 13:54:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 159 states have (on average 1.3962264150943395) internal successors, (222), 163 states have internal predecessors, (222), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-02 13:54:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 357 transitions. [2023-12-02 13:54:19,391 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 357 transitions. Word has length 70 [2023-12-02 13:54:19,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:19,391 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 357 transitions. [2023-12-02 13:54:19,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 13:54:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 357 transitions. [2023-12-02 13:54:19,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 13:54:19,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:19,394 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] [2023-12-02 13:54:19,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:54:19,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:54:19,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:54:19,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1829392270, now seen corresponding path program 1 times [2023-12-02 13:54:19,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:19,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274682448] [2023-12-02 13:54:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:19,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:19,699 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 13:54:19,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:19,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274682448] [2023-12-02 13:54:19,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274682448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:54:19,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:54:19,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:54:19,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284545760] [2023-12-02 13:54:19,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:54:19,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:54:19,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:54:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:54:19,703 INFO L87 Difference]: Start difference. First operand 251 states and 357 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 13:54:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:19,958 INFO L93 Difference]: Finished difference Result 605 states and 894 transitions. [2023-12-02 13:54:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:54:19,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 75 [2023-12-02 13:54:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:19,963 INFO L225 Difference]: With dead ends: 605 [2023-12-02 13:54:19,963 INFO L226 Difference]: Without dead ends: 378 [2023-12-02 13:54:19,964 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 13:54:19,965 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 57 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:19,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 417 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:54:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-02 13:54:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 373. [2023-12-02 13:54:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 250 states have (on average 1.448) internal successors, (362), 254 states have internal predecessors, (362), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-02 13:54:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 559 transitions. [2023-12-02 13:54:20,146 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 559 transitions. Word has length 75 [2023-12-02 13:54:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:20,146 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 559 transitions. [2023-12-02 13:54:20,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 13:54:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 559 transitions. [2023-12-02 13:54:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 13:54:20,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:20,150 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] [2023-12-02 13:54:20,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:54:20,151 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:54:20,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:20,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1933165195, now seen corresponding path program 1 times [2023-12-02 13:54:20,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:20,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386809886] [2023-12-02 13:54:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:20,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:20,318 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 13:54:20,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:20,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386809886] [2023-12-02 13:54:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386809886] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:54:20,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29367308] [2023-12-02 13:54:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:20,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:54:20,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:54:20,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:54:20,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:54:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:20,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:54:20,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:54:20,696 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 13:54:20,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:54:20,747 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 13:54:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29367308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:54:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [354583114] [2023-12-02 13:54:20,751 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2023-12-02 13:54:20,751 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:54:20,752 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:54:20,752 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:54:20,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:55:19,582 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 13:55:19,799 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 487 for LOIs [2023-12-02 13:55:22,018 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:55:46,574 WARN L293 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 487 DAG size of output: 488 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:55:58,272 WARN L293 SmtUtils]: Spent 11.48s on a formula simplification. DAG size of input: 517 DAG size of output: 513 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:56:45,769 WARN L293 SmtUtils]: Spent 10.50s on a formula simplification. DAG size of input: 510 DAG size of output: 510 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:57:02,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [354583114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:57:02,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:57:02,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 13:57:02,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860235069] [2023-12-02 13:57:02,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:57:02,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 13:57:02,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:57:02,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 13:57:02,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 13:57:02,459 INFO L87 Difference]: Start difference. First operand 373 states and 559 transitions. Second operand has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-02 13:57:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:57:25,020 INFO L93 Difference]: Finished difference Result 768 states and 1179 transitions. [2023-12-02 13:57:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 13:57:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 76 [2023-12-02 13:57:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:57:25,024 INFO L225 Difference]: With dead ends: 768 [2023-12-02 13:57:25,024 INFO L226 Difference]: Without dead ends: 458 [2023-12-02 13:57:25,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 108.0s TimeCoverageRelationStatistics Valid=140, Invalid=1050, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 13:57:25,027 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 103 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 2829 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:57:25,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 3064 Invalid, 2844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 2829 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2023-12-02 13:57:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-12-02 13:57:25,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 387. [2023-12-02 13:57:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 262 states have (on average 1.4465648854961832) internal successors, (379), 266 states have internal predecessors, (379), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-02 13:57:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 578 transitions. [2023-12-02 13:57:25,144 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 578 transitions. Word has length 76 [2023-12-02 13:57:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:57:25,145 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 578 transitions. [2023-12-02 13:57:25,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-02 13:57:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 578 transitions. [2023-12-02 13:57:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 13:57:25,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:57:25,148 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] [2023-12-02 13:57:25,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 13:57:25,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:57:25,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:57:25,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:57:25,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1392017677, now seen corresponding path program 1 times [2023-12-02 13:57:25,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:57:25,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936270597] [2023-12-02 13:57:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:57:25,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:57:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:57:25,507 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 13:57:25,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:57:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936270597] [2023-12-02 13:57:25,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936270597] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:57:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446091525] [2023-12-02 13:57:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:57:25,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:57:25,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:57:25,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:57:25,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:57:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:57:25,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:57:25,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:57:25,871 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 13:57:25,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:57:25,941 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 13:57:25,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446091525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:57:25,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [476626084] [2023-12-02 13:57:25,945 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-12-02 13:57:25,945 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:57:25,946 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:57:25,946 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:57:25,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:59:02,924 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 13:59:03,206 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 554 for LOIs [2023-12-02 13:59:05,411 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 252 for LOIs [2023-12-02 13:59:05,702 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 258 for LOIs [2023-12-02 13:59:06,068 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 239 for LOIs [2023-12-02 13:59:06,344 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:00:23,609 WARN L293 SmtUtils]: Spent 14.56s on a formula simplification. DAG size of input: 591 DAG size of output: 586 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:00:46,304 WARN L293 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 554 DAG size of output: 551 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:00:52,415 WARN L293 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 560 DAG size of output: 557 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:00:58,436 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 554 DAG size of output: 550 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:00:58,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [476626084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:00:58,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:00:58,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 14:00:58,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470010611] [2023-12-02 14:00:58,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:00:58,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 14:00:58,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:00:58,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 14:00:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 14:00:58,452 INFO L87 Difference]: Start difference. First operand 387 states and 578 transitions. Second operand has 32 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-02 14:01:20,226 WARN L293 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 597 DAG size of output: 554 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:01:38,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:01:38,916 INFO L93 Difference]: Finished difference Result 793 states and 1216 transitions. [2023-12-02 14:01:38,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 14:01:38,917 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 79 [2023-12-02 14:01:38,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:01:38,921 INFO L225 Difference]: With dead ends: 793 [2023-12-02 14:01:38,921 INFO L226 Difference]: Without dead ends: 483 [2023-12-02 14:01:38,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 127.0s TimeCoverageRelationStatistics Valid=123, Invalid=1437, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 14:01:38,923 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 63 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 3802 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:01:38,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3120 Invalid, 3816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 3802 Invalid, 0 Unknown, 0 Unchecked, 25.1s Time] [2023-12-02 14:01:38,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-12-02 14:01:39,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 423. [2023-12-02 14:01:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 292 states have (on average 1.4417808219178083) internal successors, (421), 296 states have internal predecessors, (421), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-02 14:01:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 626 transitions. [2023-12-02 14:01:39,145 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 626 transitions. Word has length 79 [2023-12-02 14:01:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:01:39,146 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 626 transitions. [2023-12-02 14:01:39,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-02 14:01:39,146 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 626 transitions. [2023-12-02 14:01:39,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 14:01:39,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:01:39,150 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 14:01:39,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:01:39,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:01:39,351 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:01:39,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:01:39,352 INFO L85 PathProgramCache]: Analyzing trace with hash 726654308, now seen corresponding path program 1 times [2023-12-02 14:01:39,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:01:39,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763278357] [2023-12-02 14:01:39,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:01:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:01:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:39,478 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 14:01:39,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:01:39,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763278357] [2023-12-02 14:01:39,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763278357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:01:39,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785191467] [2023-12-02 14:01:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:01:39,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:01:39,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:01:39,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:01:39,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:01:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:39,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:01:39,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:39,846 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 14:01:39,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:39,918 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 14:01:39,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785191467] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:39,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [719997390] [2023-12-02 14:01:39,922 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2023-12-02 14:01:39,923 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:01:39,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:01:39,923 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:01:39,924 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:03:01,213 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 14:03:01,483 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 239 for LOIs [2023-12-02 14:03:01,787 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:04:01,759 WARN L293 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 514 DAG size of output: 514 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:04:51,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [719997390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:04:51,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:04:51,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 14:04:51,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759935416] [2023-12-02 14:04:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:04:51,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 14:04:51,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:04:51,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 14:04:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 14:04:51,240 INFO L87 Difference]: Start difference. First operand 423 states and 626 transitions. Second operand has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 14:05:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:05:12,658 INFO L93 Difference]: Finished difference Result 803 states and 1225 transitions. [2023-12-02 14:05:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 14:05:12,659 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 78 [2023-12-02 14:05:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:05:12,663 INFO L225 Difference]: With dead ends: 803 [2023-12-02 14:05:12,664 INFO L226 Difference]: Without dead ends: 493 [2023-12-02 14:05:12,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 116.5s TimeCoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 14:05:12,666 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 157 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:05:12,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 2721 Invalid, 2777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2023-12-02 14:05:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-02 14:05:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 443. [2023-12-02 14:05:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 312 states have (on average 1.4455128205128205) internal successors, (451), 316 states have internal predecessors, (451), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-02 14:05:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 656 transitions. [2023-12-02 14:05:12,823 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 656 transitions. Word has length 78 [2023-12-02 14:05:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:05:12,824 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 656 transitions. [2023-12-02 14:05:12,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 14:05:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 656 transitions. [2023-12-02 14:05:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 14:05:12,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:05:12,827 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] [2023-12-02 14:05:12,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:05:13,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:05:13,027 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:05:13,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:05:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash -806761443, now seen corresponding path program 1 times [2023-12-02 14:05:13,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:05:13,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351906703] [2023-12-02 14:05:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:05:13,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:05:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:05:13,180 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 14:05:13,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:05:13,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351906703] [2023-12-02 14:05:13,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351906703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:05:13,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:05:13,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:05:13,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874353045] [2023-12-02 14:05:13,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:05:13,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:05:13,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:05:13,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:05:13,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:05:13,183 INFO L87 Difference]: Start difference. First operand 443 states and 656 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 14:05:13,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:05:13,487 INFO L93 Difference]: Finished difference Result 564 states and 804 transitions. [2023-12-02 14:05:13,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:05:13,487 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2023-12-02 14:05:13,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:05:13,491 INFO L225 Difference]: With dead ends: 564 [2023-12-02 14:05:13,491 INFO L226 Difference]: Without dead ends: 485 [2023-12-02 14:05:13,492 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 14:05:13,493 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 142 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:05:13,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 279 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:05:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-12-02 14:05:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 484. [2023-12-02 14:05:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 333 states have (on average 1.4234234234234233) internal successors, (474), 339 states have internal predecessors, (474), 115 states have call successors, (115), 37 states have call predecessors, (115), 35 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2023-12-02 14:05:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 702 transitions. [2023-12-02 14:05:13,655 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 702 transitions. Word has length 81 [2023-12-02 14:05:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:05:13,655 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 702 transitions. [2023-12-02 14:05:13,655 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 14:05:13,655 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 702 transitions. [2023-12-02 14:05:13,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 14:05:13,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:05:13,658 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2023-12-02 14:05:13,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 14:05:13,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:05:13,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:05:13,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1115396614, now seen corresponding path program 1 times [2023-12-02 14:05:13,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:05:13,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314844389] [2023-12-02 14:05:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:05:13,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:05:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:05:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-02 14:05:13,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:05:13,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314844389] [2023-12-02 14:05:13,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314844389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:05:13,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:05:13,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:05:13,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711347522] [2023-12-02 14:05:13,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:05:13,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:05:13,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:05:13,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:05:13,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:05:13,909 INFO L87 Difference]: Start difference. First operand 484 states and 702 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-02 14:05:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:05:14,550 INFO L93 Difference]: Finished difference Result 648 states and 901 transitions. [2023-12-02 14:05:14,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:05:14,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 121 [2023-12-02 14:05:14,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:05:14,555 INFO L225 Difference]: With dead ends: 648 [2023-12-02 14:05:14,555 INFO L226 Difference]: Without dead ends: 557 [2023-12-02 14:05:14,556 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 14:05:14,557 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 197 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:05:14,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 410 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:05:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-12-02 14:05:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 554. [2023-12-02 14:05:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 369 states have (on average 1.4010840108401084) internal successors, (517), 380 states have internal predecessors, (517), 136 states have call successors, (136), 49 states have call predecessors, (136), 48 states have return successors, (136), 129 states have call predecessors, (136), 133 states have call successors, (136) [2023-12-02 14:05:14,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 789 transitions. [2023-12-02 14:05:14,722 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 789 transitions. Word has length 121 [2023-12-02 14:05:14,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:05:14,723 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 789 transitions. [2023-12-02 14:05:14,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-02 14:05:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 789 transitions. [2023-12-02 14:05:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 14:05:14,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:05:14,727 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2023-12-02 14:05:14,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 14:05:14,727 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:05:14,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:05:14,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1254230014, now seen corresponding path program 1 times [2023-12-02 14:05:14,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:05:14,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557709086] [2023-12-02 14:05:14,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:05:14,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:05:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:05:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-02 14:05:15,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:05:15,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557709086] [2023-12-02 14:05:15,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557709086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:05:15,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:05:15,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 14:05:15,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552766753] [2023-12-02 14:05:15,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:05:15,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 14:05:15,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:05:15,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 14:05:15,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:05:15,133 INFO L87 Difference]: Start difference. First operand 554 states and 789 transitions. Second operand has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-12-02 14:05:16,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:05:16,249 INFO L93 Difference]: Finished difference Result 1108 states and 1544 transitions. [2023-12-02 14:05:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 14:05:16,250 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 126 [2023-12-02 14:05:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:05:16,257 INFO L225 Difference]: With dead ends: 1108 [2023-12-02 14:05:16,257 INFO L226 Difference]: Without dead ends: 921 [2023-12-02 14:05:16,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-02 14:05:16,260 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 214 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:05:16,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1509 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 14:05:16,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-12-02 14:05:16,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 908. [2023-12-02 14:05:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 591 states have (on average 1.4128595600676819) internal successors, (835), 610 states have internal predecessors, (835), 233 states have call successors, (233), 85 states have call predecessors, (233), 83 states have return successors, (231), 221 states have call predecessors, (231), 227 states have call successors, (231) [2023-12-02 14:05:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1299 transitions. [2023-12-02 14:05:16,578 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1299 transitions. Word has length 126 [2023-12-02 14:05:16,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:05:16,578 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1299 transitions. [2023-12-02 14:05:16,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-12-02 14:05:16,579 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1299 transitions. [2023-12-02 14:05:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-02 14:05:16,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:05:16,584 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:16,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 14:05:16,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:05:16,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:05:16,585 INFO L85 PathProgramCache]: Analyzing trace with hash -583266004, now seen corresponding path program 1 times [2023-12-02 14:05:16,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:05:16,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558930548] [2023-12-02 14:05:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:05:16,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:05:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:05:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-02 14:05:17,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:05:17,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558930548] [2023-12-02 14:05:17,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558930548] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:05:17,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067400856] [2023-12-02 14:05:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:05:17,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:05:17,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:05:17,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:05:17,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dadc9ba-d624-46b6-ad2a-4737fca21bbc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:05:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:05:18,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:05:18,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:05:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-02 14:05:18,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:05:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 14:05:18,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067400856] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:05:18,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1757544204] [2023-12-02 14:05:18,249 INFO L159 IcfgInterpreter]: Started Sifa with 86 locations of interest [2023-12-02 14:05:18,249 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:05:18,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:05:18,249 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:05:18,250 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs