./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/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_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/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_d81136a3-cbb2-41e5-bbda-a65659970c1c/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 f422b02f04909f595cd81c18f65f163bde7189dd9d2c25d22c48d8d4d89787b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:27:48,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:27:48,855 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:27:48,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:27:48,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:27:48,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:27:48,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:27:48,884 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:27:48,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:27:48,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:27:48,886 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:27:48,886 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:27:48,887 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:27:48,887 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:27:48,888 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:27:48,888 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:27:48,889 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:27:48,890 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:27:48,890 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:27:48,890 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:27:48,891 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:27:48,892 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:27:48,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:27:48,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:27:48,894 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:27:48,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:27:48,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:27:48,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:27:48,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:27:48,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:27:48,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:27:48,896 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:27:48,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:27:48,897 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:27:48,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:27:48,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:27:48,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:27:48,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:27:48,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:27:48,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:27:48,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:27:48,898 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:27:48,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:27:48,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:27:48,899 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:27:48,899 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:27:48,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:27:48,900 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_d81136a3-cbb2-41e5-bbda-a65659970c1c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f422b02f04909f595cd81c18f65f163bde7189dd9d2c25d22c48d8d4d89787b5 [2023-12-02 13:27:49,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:27:49,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:27:49,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:27:49,154 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:27:49,155 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:27:49,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.c [2023-12-02 13:27:51,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:27:52,174 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:27:52,174 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c [2023-12-02 13:27:52,194 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/data/b9763cd90/7f11a1ac27924d96b0ec91c3d37f47ec/FLAG22bf9b9f5 [2023-12-02 13:27:52,209 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/data/b9763cd90/7f11a1ac27924d96b0ec91c3d37f47ec [2023-12-02 13:27:52,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:27:52,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:27:52,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:27:52,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:27:52,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:27:52,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f724f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52, skipping insertion in model container [2023-12-02 13:27:52,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,302 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:27:52,603 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_d81136a3-cbb2-41e5-bbda-a65659970c1c/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c[27504,27517] [2023-12-02 13:27:52,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:27:52,712 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:27:52,720 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-12-02 13:27:52,721 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [460] [2023-12-02 13:27:52,721 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [826] [2023-12-02 13:27:52,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [875] [2023-12-02 13:27:52,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1044] [2023-12-02 13:27:52,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1242] [2023-12-02 13:27:52,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1251] [2023-12-02 13:27:52,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2325] [2023-12-02 13:27:52,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2342] [2023-12-02 13:27:52,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [2581] [2023-12-02 13:27:52,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2601] [2023-12-02 13:27:52,773 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_d81136a3-cbb2-41e5-bbda-a65659970c1c/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c[27504,27517] [2023-12-02 13:27:52,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:27:52,843 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:27:52,848 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:27:52,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52 WrapperNode [2023-12-02 13:27:52,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:27:52,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:27:52,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:27:52,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:27:52,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,927 INFO L138 Inliner]: procedures = 113, calls = 154, calls flagged for inlining = 41, calls inlined = 36, statements flattened = 725 [2023-12-02 13:27:52,928 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:27:52,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:27:52,929 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:27:52,929 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:27:52,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,966 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,975 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:52,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:27:52,993 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:27:52,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:27:52,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:27:52,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (1/1) ... [2023-12-02 13:27:53,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:27:53,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:27:53,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:27:53,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:27:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-12-02 13:27:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-12-02 13:27:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-12-02 13:27:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-12-02 13:27:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 13:27:53,081 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 13:27:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-12-02 13:27:53,082 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-12-02 13:27:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 13:27:53,082 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 13:27:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 13:27:53,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 13:27:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 13:27:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 13:27:53,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 13:27:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-02 13:27:53,083 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-02 13:27:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 13:27:53,083 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 13:27:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:27:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-12-02 13:27:53,083 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-12-02 13:27:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 13:27:53,084 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 13:27:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 13:27:53,084 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 13:27:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 13:27:53,084 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 13:27:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:27:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-12-02 13:27:53,085 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-12-02 13:27:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:27:53,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:27:53,255 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:27:53,257 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:27:53,768 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:27:54,099 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:27:54,099 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:27:54,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:27:54 BoogieIcfgContainer [2023-12-02 13:27:54,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:27:54,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:27:54,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:27:54,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:27:54,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:27:52" (1/3) ... [2023-12-02 13:27:54,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddff45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:27:54, skipping insertion in model container [2023-12-02 13:27:54,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:52" (2/3) ... [2023-12-02 13:27:54,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddff45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:27:54, skipping insertion in model container [2023-12-02 13:27:54,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:27:54" (3/3) ... [2023-12-02 13:27:54,110 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product36.cil.c [2023-12-02 13:27:54,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:27:54,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:27:54,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:27:54,182 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;@468af99c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:27:54,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:27:54,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 78 states have internal predecessors, (106), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-02 13:27:54,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 13:27:54,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:27:54,199 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 13:27:54,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:27:54,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:27:54,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1879043065, now seen corresponding path program 1 times [2023-12-02 13:27:54,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:27:54,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501267440] [2023-12-02 13:27:54,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:27:54,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:27:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:27:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:27:54,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:27:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501267440] [2023-12-02 13:27:54,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501267440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:27:54,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:27:54,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:27:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238498282] [2023-12-02 13:27:54,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:27:54,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:27:54,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:27:54,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:27:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:27:54,544 INFO L87 Difference]: Start difference. First operand has 122 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 78 states have internal predecessors, (106), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 13:27:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:27:54,648 INFO L93 Difference]: Finished difference Result 201 states and 271 transitions. [2023-12-02 13:27:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:27:54,650 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 49 [2023-12-02 13:27:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:27:54,662 INFO L225 Difference]: With dead ends: 201 [2023-12-02 13:27:54,662 INFO L226 Difference]: Without dead ends: 119 [2023-12-02 13:27:54,667 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 13:27:54,670 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:27:54,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:27:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-02 13:27:54,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-12-02 13:27:54,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.36986301369863) internal successors, (100), 75 states have internal predecessors, (100), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 13:27:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 161 transitions. [2023-12-02 13:27:54,725 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 161 transitions. Word has length 49 [2023-12-02 13:27:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:27:54,726 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 161 transitions. [2023-12-02 13:27:54,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 13:27:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 161 transitions. [2023-12-02 13:27:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 13:27:54,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:27:54,730 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 13:27:54,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:27:54,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:27:54,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:27:54,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1096695293, now seen corresponding path program 1 times [2023-12-02 13:27:54,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:27:54,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843754601] [2023-12-02 13:27:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:27:54,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:27:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:27:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:27:54,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:27:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843754601] [2023-12-02 13:27:54,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843754601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:27:54,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:27:54,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:27:54,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736695363] [2023-12-02 13:27:54,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:27:54,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:27:54,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:27:54,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:27:54,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:27:54,898 INFO L87 Difference]: Start difference. First operand 119 states and 161 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 13:27:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:27:54,980 INFO L93 Difference]: Finished difference Result 197 states and 256 transitions. [2023-12-02 13:27:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:27:54,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2023-12-02 13:27:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:27:54,983 INFO L225 Difference]: With dead ends: 197 [2023-12-02 13:27:54,983 INFO L226 Difference]: Without dead ends: 121 [2023-12-02 13:27:54,985 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 13:27:54,986 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:27:54,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 267 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:27:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-02 13:27:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-12-02 13:27:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 75 states have (on average 1.36) internal successors, (102), 77 states have internal predecessors, (102), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 13:27:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 163 transitions. [2023-12-02 13:27:55,002 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 163 transitions. Word has length 50 [2023-12-02 13:27:55,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:27:55,003 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 163 transitions. [2023-12-02 13:27:55,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 13:27:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 163 transitions. [2023-12-02 13:27:55,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 13:27:55,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:27:55,006 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 13:27:55,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:27:55,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:27:55,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:27:55,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1883410070, now seen corresponding path program 1 times [2023-12-02 13:27:55,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:27:55,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846749470] [2023-12-02 13:27:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:27:55,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:27:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:27:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:27:55,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:27:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846749470] [2023-12-02 13:27:55,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846749470] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:27:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494984260] [2023-12-02 13:27:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:27:55,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:27:55,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:27:55,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:27:55,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:27:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:27:55,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:27:55,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:27:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:27:55,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:27:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:27:55,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494984260] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:27:55,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2062571270] [2023-12-02 13:27:55,605 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 13:27:55,605 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:27:55,609 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:27:55,613 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:27:55,613 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:28:16,068 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 232 for LOIs [2023-12-02 13:28:16,237 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:28:44,199 WARN L293 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 452 DAG size of output: 452 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:28:52,253 WARN L293 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 453 DAG size of output: 452 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:28:55,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2062571270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:28:55,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:28:55,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2023-12-02 13:28:55,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577117128] [2023-12-02 13:28:55,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:28:55,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 13:28:55,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:28:55,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 13:28:55,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-02 13:28:55,200 INFO L87 Difference]: Start difference. First operand 121 states and 163 transitions. Second operand has 14 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:29:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:29:00,039 INFO L93 Difference]: Finished difference Result 280 states and 409 transitions. [2023-12-02 13:29:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 13:29:00,041 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 54 [2023-12-02 13:29:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:29:00,044 INFO L225 Difference]: With dead ends: 280 [2023-12-02 13:29:00,044 INFO L226 Difference]: Without dead ends: 171 [2023-12-02 13:29:00,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-02 13:29:00,046 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 46 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:29:00,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1682 Invalid, 1017 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-02 13:29:00,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-02 13:29:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 142. [2023-12-02 13:29:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 98 states have internal predecessors, (134), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 13:29:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2023-12-02 13:29:00,079 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 195 transitions. Word has length 54 [2023-12-02 13:29:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:29:00,080 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 195 transitions. [2023-12-02 13:29:00,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:29:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 195 transitions. [2023-12-02 13:29:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 13:29:00,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:29:00,082 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 13:29:00,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:29:00,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:29:00,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:29:00,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:29:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash 844219493, now seen corresponding path program 1 times [2023-12-02 13:29:00,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:29:00,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460530074] [2023-12-02 13:29:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:29:00,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:29:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:29:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:29:00,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:29:00,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460530074] [2023-12-02 13:29:00,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460530074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:29:00,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:29:00,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:29:00,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003043593] [2023-12-02 13:29:00,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:29:00,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:29:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:29:00,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:29:00,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:29:00,378 INFO L87 Difference]: Start difference. First operand 142 states and 195 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 13:29:00,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:29:00,483 INFO L93 Difference]: Finished difference Result 325 states and 463 transitions. [2023-12-02 13:29:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:29:00,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2023-12-02 13:29:00,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:29:00,486 INFO L225 Difference]: With dead ends: 325 [2023-12-02 13:29:00,486 INFO L226 Difference]: Without dead ends: 197 [2023-12-02 13:29:00,487 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 13:29:00,488 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 48 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 263 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 13:29:00,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 263 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:29:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-02 13:29:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2023-12-02 13:29:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 143 states have (on average 1.4755244755244756) internal successors, (211), 145 states have internal predecessors, (211), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-02 13:29:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 278 transitions. [2023-12-02 13:29:00,531 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 278 transitions. Word has length 55 [2023-12-02 13:29:00,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:29:00,531 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 278 transitions. [2023-12-02 13:29:00,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 13:29:00,532 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 278 transitions. [2023-12-02 13:29:00,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 13:29:00,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:29:00,534 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 13:29:00,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 13:29:00,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:29:00,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:29:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1503353686, now seen corresponding path program 1 times [2023-12-02 13:29:00,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:29:00,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829190416] [2023-12-02 13:29:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:29:00,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:29:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:29:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:29:00,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:29:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829190416] [2023-12-02 13:29:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829190416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:29:00,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020723481] [2023-12-02 13:29:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:29:00,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:29:00,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:29:00,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:29:00,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:29:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:29:00,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:29:00,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:29:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:29:00,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:29:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:29:00,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020723481] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:29:00,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [265306856] [2023-12-02 13:29:00,996 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2023-12-02 13:29:00,997 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:29:00,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:29:00,998 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:29:00,998 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:29:26,557 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 232 for LOIs [2023-12-02 13:29:26,729 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:29:55,512 WARN L293 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 455 DAG size of output: 455 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:30:04,044 WARN L293 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 456 DAG size of output: 455 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:30:12,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [265306856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:30:12,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:30:12,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 4, 4] total 21 [2023-12-02 13:30:12,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979317867] [2023-12-02 13:30:12,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:30:12,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 13:30:12,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:30:12,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 13:30:12,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-02 13:30:12,993 INFO L87 Difference]: Start difference. First operand 192 states and 278 transitions. Second operand has 16 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:30:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:30:16,933 INFO L93 Difference]: Finished difference Result 397 states and 601 transitions. [2023-12-02 13:30:16,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 13:30:16,934 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2023-12-02 13:30:16,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:30:16,937 INFO L225 Difference]: With dead ends: 397 [2023-12-02 13:30:16,938 INFO L226 Difference]: Without dead ends: 260 [2023-12-02 13:30:16,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 46.3s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-02 13:30:16,940 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 63 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:30:16,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1378 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-02 13:30:16,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-02 13:30:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 200. [2023-12-02 13:30:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 151 states have (on average 1.4768211920529801) internal successors, (223), 153 states have internal predecessors, (223), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-02 13:30:16,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 290 transitions. [2023-12-02 13:30:16,986 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 290 transitions. Word has length 56 [2023-12-02 13:30:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:30:16,986 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 290 transitions. [2023-12-02 13:30:16,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:30:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 290 transitions. [2023-12-02 13:30:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 13:30:16,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:30:16,989 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 13:30:16,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:30:17,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:30:17,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:30:17,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:30:17,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2017761336, now seen corresponding path program 1 times [2023-12-02 13:30:17,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:30:17,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980708680] [2023-12-02 13:30:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:30:17,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:30:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:30:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:30:17,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:30:17,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980708680] [2023-12-02 13:30:17,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980708680] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:30:17,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598281579] [2023-12-02 13:30:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:30:17,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:30:17,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:30:17,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:30:17,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:30:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:30:17,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:30:17,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:30:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:30:17,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:30:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:30:17,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598281579] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:30:17,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1279248837] [2023-12-02 13:30:17,685 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2023-12-02 13:30:17,685 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:30:17,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:30:17,686 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:30:17,686 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:30:46,237 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 232 for LOIs [2023-12-02 13:30:46,409 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:31:16,225 WARN L293 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 456 DAG size of output: 456 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:31:24,817 WARN L293 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 457 DAG size of output: 456 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:31:39,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1279248837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:31:39,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:31:39,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [4, 4, 4] total 23 [2023-12-02 13:31:39,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803846875] [2023-12-02 13:31:39,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:31:39,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 13:31:39,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:31:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 13:31:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-12-02 13:31:39,689 INFO L87 Difference]: Start difference. First operand 200 states and 290 transitions. Second operand has 18 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:31:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:31:44,083 INFO L93 Difference]: Finished difference Result 401 states and 606 transitions. [2023-12-02 13:31:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 13:31:44,084 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 58 [2023-12-02 13:31:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:31:44,086 INFO L225 Difference]: With dead ends: 401 [2023-12-02 13:31:44,087 INFO L226 Difference]: Without dead ends: 264 [2023-12-02 13:31:44,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-12-02 13:31:44,089 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 76 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:31:44,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1421 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-02 13:31:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-02 13:31:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 210. [2023-12-02 13:31:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 161 states have (on average 1.4782608695652173) internal successors, (238), 163 states have internal predecessors, (238), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-02 13:31:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 305 transitions. [2023-12-02 13:31:44,137 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 305 transitions. Word has length 58 [2023-12-02 13:31:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:31:44,138 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 305 transitions. [2023-12-02 13:31:44,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:31:44,138 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 305 transitions. [2023-12-02 13:31:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 13:31:44,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:31:44,140 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] [2023-12-02 13:31:44,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 13:31:44,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:31:44,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:31:44,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:31:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash -931484392, now seen corresponding path program 1 times [2023-12-02 13:31:44,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:31:44,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888520875] [2023-12-02 13:31:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:31:44,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:31:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:31:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:31:44,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:31:44,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888520875] [2023-12-02 13:31:44,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888520875] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:31:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557102569] [2023-12-02 13:31:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:31:44,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:31:44,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:31:44,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:31:44,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:31:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:31:44,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:31:44,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:31:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:31:44,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:31:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:31:44,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557102569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:31:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [503829682] [2023-12-02 13:31:44,900 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2023-12-02 13:31:44,900 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:31:44,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:31:44,900 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:31:44,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:32:12,473 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 232 for LOIs [2023-12-02 13:32:12,641 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:32:44,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [503829682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:32:44,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:32:44,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [6, 5, 5] total 24 [2023-12-02 13:32:44,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266427144] [2023-12-02 13:32:44,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:32:44,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 13:32:44,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:32:44,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 13:32:44,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-12-02 13:32:44,547 INFO L87 Difference]: Start difference. First operand 210 states and 305 transitions. Second operand has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:32:50,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:32:50,914 INFO L93 Difference]: Finished difference Result 453 states and 685 transitions. [2023-12-02 13:32:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 13:32:50,915 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 59 [2023-12-02 13:32:50,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:32:50,917 INFO L225 Difference]: With dead ends: 453 [2023-12-02 13:32:50,917 INFO L226 Difference]: Without dead ends: 274 [2023-12-02 13:32:50,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2023-12-02 13:32:50,920 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 110 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:32:50,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1442 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-02 13:32:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-02 13:32:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 211. [2023-12-02 13:32:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 162 states have (on average 1.4567901234567902) internal successors, (236), 164 states have internal predecessors, (236), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-02 13:32:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 303 transitions. [2023-12-02 13:32:50,970 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 303 transitions. Word has length 59 [2023-12-02 13:32:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:32:50,970 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 303 transitions. [2023-12-02 13:32:50,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:32:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 303 transitions. [2023-12-02 13:32:50,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 13:32:50,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:32:50,972 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 13:32:50,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:32:51,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:32:51,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:32:51,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:32:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash 382221581, now seen corresponding path program 1 times [2023-12-02 13:32:51,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:32:51,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92447080] [2023-12-02 13:32:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:32:51,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:32:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:32:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:32:51,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:32:51,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92447080] [2023-12-02 13:32:51,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92447080] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:32:51,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687132981] [2023-12-02 13:32:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:32:51,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:32:51,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:32:51,293 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:32:51,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:32:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:32:51,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:32:51,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:32:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:32:51,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:32:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:32:51,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687132981] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:32:51,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [750490072] [2023-12-02 13:32:51,620 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-12-02 13:32:51,620 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:32:51,620 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:32:51,620 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:32:51,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:33:48,294 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 232 for LOIs [2023-12-02 13:33:48,464 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:34:18,636 WARN L293 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 458 DAG size of output: 458 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:34:27,298 WARN L293 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 459 DAG size of output: 458 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:34:46,559 WARN L293 SmtUtils]: Spent 18.94s on a formula simplification. DAG size of input: 471 DAG size of output: 460 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:35:05,437 WARN L293 SmtUtils]: Spent 18.55s on a formula simplification. DAG size of input: 469 DAG size of output: 458 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:35:24,559 WARN L293 SmtUtils]: Spent 18.75s on a formula simplification. DAG size of input: 473 DAG size of output: 462 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:35:44,505 WARN L293 SmtUtils]: Spent 19.57s on a formula simplification. DAG size of input: 471 DAG size of output: 460 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:36:04,536 WARN L293 SmtUtils]: Spent 19.62s on a formula simplification. DAG size of input: 475 DAG size of output: 464 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:36:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [750490072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:36:11,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:36:11,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [4, 4, 4] total 25 [2023-12-02 13:36:11,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67166175] [2023-12-02 13:36:11,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:36:11,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 13:36:11,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:36:11,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 13:36:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-02 13:36:11,205 INFO L87 Difference]: Start difference. First operand 211 states and 303 transitions. Second operand has 20 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:36:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:36:16,807 INFO L93 Difference]: Finished difference Result 408 states and 612 transitions. [2023-12-02 13:36:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 13:36:16,808 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 60 [2023-12-02 13:36:16,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:36:16,810 INFO L225 Difference]: With dead ends: 408 [2023-12-02 13:36:16,811 INFO L226 Difference]: Without dead ends: 271 [2023-12-02 13:36:16,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 142.7s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-02 13:36:16,812 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 153 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:36:16,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1356 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-02 13:36:16,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-02 13:36:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 223. [2023-12-02 13:36:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 174 states have (on average 1.4597701149425288) internal successors, (254), 176 states have internal predecessors, (254), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-02 13:36:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 321 transitions. [2023-12-02 13:36:16,871 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 321 transitions. Word has length 60 [2023-12-02 13:36:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:36:16,872 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 321 transitions. [2023-12-02 13:36:16,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:36:16,872 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 321 transitions. [2023-12-02 13:36:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 13:36:16,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:36:16,874 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] [2023-12-02 13:36:16,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 13:36:17,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 13:36:17,075 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:36:17,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:36:17,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1139977974, now seen corresponding path program 1 times [2023-12-02 13:36:17,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:36:17,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373987838] [2023-12-02 13:36:17,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:17,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:36:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:36:17,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:36:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373987838] [2023-12-02 13:36:17,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373987838] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:36:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147595762] [2023-12-02 13:36:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:17,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:36:17,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:36:17,231 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:36:17,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:36:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:17,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:36:17,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:36:17,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:36:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:36:17,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147595762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:36:17,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1160485882] [2023-12-02 13:36:17,593 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2023-12-02 13:36:17,593 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:36:17,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:36:17,593 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:36:17,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:36:59,189 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 232 for LOIs [2023-12-02 13:36:59,366 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:37:37,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1160485882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:37:37,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:37:37,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 5, 5] total 26 [2023-12-02 13:37:37,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678565892] [2023-12-02 13:37:37,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:37:37,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 13:37:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:37:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 13:37:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2023-12-02 13:37:37,003 INFO L87 Difference]: Start difference. First operand 223 states and 321 transitions. Second operand has 18 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:37:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:37:43,428 INFO L93 Difference]: Finished difference Result 458 states and 689 transitions. [2023-12-02 13:37:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 13:37:43,429 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2023-12-02 13:37:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:37:43,431 INFO L225 Difference]: With dead ends: 458 [2023-12-02 13:37:43,431 INFO L226 Difference]: Without dead ends: 306 [2023-12-02 13:37:43,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2023-12-02 13:37:43,433 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 120 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:37:43,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1498 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-02 13:37:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-12-02 13:37:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 232. [2023-12-02 13:37:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 183 states have (on average 1.453551912568306) internal successors, (266), 185 states have internal predecessors, (266), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-02 13:37:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 333 transitions. [2023-12-02 13:37:43,491 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 333 transitions. Word has length 61 [2023-12-02 13:37:43,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:37:43,491 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 333 transitions. [2023-12-02 13:37:43,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:37:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 333 transitions. [2023-12-02 13:37:43,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 13:37:43,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:37:43,492 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 13:37:43,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 13:37:43,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:37:43,693 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:37:43,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:37:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1850599790, now seen corresponding path program 1 times [2023-12-02 13:37:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:37:43,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467233432] [2023-12-02 13:37:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:37:43,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:37:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:37:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:37:43,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:37:43,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467233432] [2023-12-02 13:37:43,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467233432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:37:43,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112641697] [2023-12-02 13:37:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:37:43,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:37:43,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:37:43,760 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:37:43,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:37:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:37:43,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:37:43,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:37:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:37:44,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:37:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:37:44,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112641697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:37:44,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [418903824] [2023-12-02 13:37:44,064 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2023-12-02 13:37:44,064 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:37:44,065 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:37:44,065 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:37:44,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:38:42,893 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 232 for LOIs [2023-12-02 13:38:43,057 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:39:11,143 WARN L293 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 460 DAG size of output: 460 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:39:19,218 WARN L293 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 461 DAG size of output: 460 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:39:36,869 WARN L293 SmtUtils]: Spent 17.38s on a formula simplification. DAG size of input: 473 DAG size of output: 462 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:39:55,549 WARN L293 SmtUtils]: Spent 18.40s on a formula simplification. DAG size of input: 471 DAG size of output: 460 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:40:13,640 WARN L293 SmtUtils]: Spent 17.79s on a formula simplification. DAG size of input: 475 DAG size of output: 464 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:40:31,477 WARN L293 SmtUtils]: Spent 17.49s on a formula simplification. DAG size of input: 473 DAG size of output: 462 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:40:49,372 WARN L293 SmtUtils]: Spent 17.54s on a formula simplification. DAG size of input: 477 DAG size of output: 466 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:41:00,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [418903824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:41:00,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:41:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2023-12-02 13:41:00,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496061387] [2023-12-02 13:41:00,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:41:00,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 13:41:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:41:00,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 13:41:00,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-02 13:41:00,736 INFO L87 Difference]: Start difference. First operand 232 states and 333 transitions. Second operand has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:41:06,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:41:06,650 INFO L93 Difference]: Finished difference Result 425 states and 635 transitions. [2023-12-02 13:41:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 13:41:06,651 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 62 [2023-12-02 13:41:06,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:41:06,653 INFO L225 Difference]: With dead ends: 425 [2023-12-02 13:41:06,653 INFO L226 Difference]: Without dead ends: 288 [2023-12-02 13:41:06,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 137.7s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-02 13:41:06,654 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 105 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:41:06,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1496 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-02 13:41:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-02 13:41:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 246. [2023-12-02 13:41:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 197 states have (on average 1.4568527918781726) internal successors, (287), 199 states have internal predecessors, (287), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-02 13:41:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 354 transitions. [2023-12-02 13:41:06,699 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 354 transitions. Word has length 62 [2023-12-02 13:41:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:41:06,700 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 354 transitions. [2023-12-02 13:41:06,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 13:41:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 354 transitions. [2023-12-02 13:41:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 13:41:06,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:41:06,701 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] [2023-12-02 13:41:06,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-02 13:41:06,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 13:41:06,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:41:06,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:41:06,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2118442447, now seen corresponding path program 1 times [2023-12-02 13:41:06,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:41:06,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468324389] [2023-12-02 13:41:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:41:06,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:41:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:41:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:41:07,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:41:07,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468324389] [2023-12-02 13:41:07,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468324389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:41:07,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134007521] [2023-12-02 13:41:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:41:07,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:41:07,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:41:07,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:41:07,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81136a3-cbb2-41e5-bbda-a65659970c1c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 13:41:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:41:07,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:41:07,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:41:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:41:07,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:41:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:41:07,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134007521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:41:07,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [587111469] [2023-12-02 13:41:07,340 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-12-02 13:41:07,340 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:41:07,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:41:07,340 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:41:07,341 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:41:54,341 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 232 for LOIs [2023-12-02 13:41:54,504 INFO L180 IcfgInterpreter]: Interpretation finished